API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

From 89,997 reviews, clients rate our API Developers 4.9 out of 5 stars.
Hire API Developers

API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

From 89,997 reviews, clients rate our API Developers 4.9 out of 5 stars.
Hire API Developers

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    I’m building an end-to-end lending experience for iOS that feels as smooth as Slice or Moneyview. The job covers both sides of the stack: a sleek native iOS front end and a secure, scalable back end with the APIs that power it. On the user side the flow is simple but must be rock-solid. A new customer signs up with email/password, can just as easily use a social account, and once inside can enable Face ID or Touch ID so returning is frictionless. They complete a loan application form, the system instantly checks eligibility, returns an approved amount (or declination), shows a clear repayment schedule, and later lets them review every past loan in a dedicated history screen. I need the full technical delivery: • iOS app (Swift or SwiftUI preferred) that implements the entire j...

    $73308 Average bid
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    8 bids

    I am looking for a talented developer or small team to build a "Website-as-a-Service" (WaaS) platform for my boutique agency. This system is for attorneys who need a high-quality website with integrated communications. The Scope: Headless WordPress Multisite: Set up a network where I can manually "clone" sites for new clients. 10 Master Templates: Build 10 high-end, clean attorney website templates using Elementor Pro or other. You may ask ai to generate 10 switchable attorney website templates. The color Switcher: After you've created the templates, Create a simple slide-in panel that allows users to pick from 20 pre-set color schemes (using CSS variables). Ask ai to recommend the color schemes or send me the templates and i can decide on the color schemes for yo...

    $444 Average bid
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    112 bids
    Extend Apify Automation Flows
    6 days left
    Verified

    I already run a live Apify actor that handles several internal automation tasks. It is stable and well-structured, but I now need to branch into brand-new automation flows focused on data collection and processing. Here is what I need from you: • Analyse the current codebase (Node.js + Apify SDK) so your additions slot in without breaking the existing automation tasks. • Design and build one or more new actors, or extend the current actor, to fetch data from targeted sources, normalise it, and store the output in a dataset or key-value store of my choice. • Keep the solution configurable through ENV variables or an input schema, so non-developers on my team can tweak URLs, pagination, scheduling, and output format. • Provide clear, inline comments and a short...

    $8 Average bid
    $8 Avg Bid
    3 bids

    Freelancer Proposal: AI YouTube Shorts / Reels Editing Software Title (if platform allows) Build MVP: AI Tool That Turns Long Videos Into YouTube Shorts & Reels Proposal Message (copy & paste) Hi, I’m looking for a developer (or small team) to help me build an MVP AI video editing web app focused on YouTube Shorts, Instagram Reels, and TikTok. The goal is a simple, niche-focused tool that allows creators to upload a long-form video and receive multiple short, vertical clips with captions. Core Features (MVP) Upload long video (or paste YouTube link) Automatic transcription AI-selected short clips (30–60s) Vertical formatting (9:16) Auto captions (burned in) Download finished clips Basic user accounts Simple usage limits (based on plan) Tech Expectations (flexible, op...

    $2040 - $4080
    Sealed
    $2040 - $4080
    128 bids

    I need a robust, well-documented software or a tool that lets the Zowee H155-381 operate with several SIM cards instead of only one. The job involves reverse-engineering the device’s firmware and hardware interfaces, pinpointing the current SIM-handling logic, and producing a tool that can reliably switch between multiple SIMs on demand. The core requirement confirm that you will deliver: A working unlock software for Zowee H155-381 same model shown at pictures i sent that single or double click do steps automatically and make every router we link and use the software on it support multi carriers sim card normally without future re locking Network/SIM lock removal, so the device can be used with other carriers normally without any obstracles Step-by-step instructions (easy...

    $1081 Average bid
    $1081 Avg Bid
    50 bids

    Project Overview Demo of project we would like to use as example provided below. We are seeking an experienced developer to build a low-latency, real-time stock screener using the QuoteMedia API. The screener will monitor all actively traded U.S. stocks and display key metrics with updates occurring every second. The ideal candidate should have prior experience building financial data tools, stock scanners, or trading platforms and be comfortable working with high-frequency data updates. Core Requirements Data Source QuoteMedia API will be used as the primary data provider. The system must pull and maintain a live list of all U.S. equities. Required Metrics For each stock, the screener must calculate and display: Current price Volume Relative volume (daily) Relative volume (5-m...

    $516 Average bid
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    119 bids

    We are seeking a talented Full Stack Automation Engineer to join our team. The ideal candidate will have experience in building and maintaining automation frameworks, as well as hands-on knowledge of both front-end and back-end technologies. You will work closely with our development and QA teams to enhance our automation processes and improve overall project efficiency. Key Requirements: - Experience with Python, JavaScript, Java, Node.js - API integration and development - Front-end and back-end automation - CRM web form automation experience preferred - Strong problem-solving skills Project Duration: 1 to 3 months Hours: Less than 30 hrs/week

    $12 / hr Average bid
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    76 bids
    Full-Stack E-Commerce Build
    6 days left
    Verified

    I’m building a new e-commerce website and need an experienced full-stack developer who can take it from empty repo to production-ready. Core to the project is a smooth, secure user account system with fully functional wish lists, and the entire checkout flow must run through PayPal. I already have product data and basic wireframes; what I need from you is the complete application layer—frontend, backend, database schema, and deployment pipeline. Clean, well-documented code and clear commit history are important to me because I’ll be maintaining the project after launch. Please let me know: • Which stack you’d propose and why it suits an e-commerce build focused on PayPal. • A realistic timeline to deliver an MVP with user accounts, wish lists, and Pa...

    $6852 Average bid
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    119 bids

    ________________________________________ Freelance Opportunity: Full-Stack Developer ( + Directus) We are looking for an experienced Full-Stack Developer to maintain, and enhance, an existing ERP platform built on a modern JavaScript stack. The role is freelance/contract-based with scope for long-term collaboration. Tech Stack • Frontend: 15 (App Router), React 19, TypeScript, Tailwind CSS • Backend / CMS: Directus (Headless CMS) • Database: PostgreSQL • Infrastructure: Docker, Docker Compose • Deployment: Dokploy on Oracle Cloud VM ________________________________________ Key Responsibilities • Maintain and enhance existing ERP modules, including: o Student management o Internal operations tracking • Design and implement new features and workflows &...

    $68 Average bid
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    14 bids

    I need all data that starts from , walks through every brand, opens each handset page and captures the complete specification table exactly as shown. The end-product I expect is: • A clean JSON file data where every phone is an object containing every available field (model name, release date, dimensions, display, chipset, camera, battery—everything published on the spec sheet). Please make sure the scraper respects polite crawling rules, handles pagination and brand/model edge cases gracefully, and returns UTF-8 encoded text. If anything on the site requires minor waits or retries, can block your way. I will test JSON data and if validates proper data, the job is done.

    $12 Average bid
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    25 bids

    I need a single piece of software that controls my dimension-weight-scanning workflow from start to finish. The application must talk directly to three devices on the line—scale, volumetric camera and scanner—capture the dimension and weight data, then trigger a photo of the package label. From that image the program should reliably pull out the text, barcode and any QR code in one pass. Once each package is processed, all results have to be written to an XML file structured by date, with an auto-incremented package ID embedded in the node. The same data set should immediately feed two more actions: 1. Generate a ready-to-print shipping label (standard 4x6 thermal format). 2. Push the full XML payload to our in-house system through a REST-style API. I expect the software t...

    $185 Average bid
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    30 bids

    I’m looking to build a lightweight appointment-scheduling module that clinics and hospitals can run from any browser. The core focus is simple: staff should be able to book, move, or cancel appointments in seconds, and every confirmed booking must automatically trigger an SMS reminder that includes the visit’s date and time, the doctor’s name, and the clinic address. The flow I have in mind: • Receptionist (or doctor) opens a clean calendar view, chooses an open slot, selects / creates the patient, and clicks “Save”. • Behind the scenes the system stores the booking and instantly sends the tailored SMS through an integrated gateway such as Twilio, Nexmo, or any equivalent you recommend. • If the slot is later changed or cancelled, a follow-...

    $235 Average bid
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    47 bids

    I am building an enterprise-grade, stealth monitoring solution dedicated to Android 14 devices and I need a senior security engineer who can take it from proof-of-concept to a production-ready SaaS platform. What the agent must do The core of the job is a lightweight background service that captures user activity—specifically app-usage timelines, every keystroke, and continuous location—even under the new Android 14 background-execution limits. All data has to be streamed in real time, encrypted end-to-end (AES-256 at rest, TLS 1.3 in transit), and made available for remote access from a web console. Zero-root, zero-popup, and zero-battery-drain are non-negotiable. How the platform should feel Think managed SaaS: multi-tenant, horizontally scalable, sub-second ingest for ...

    $4536 Average bid
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    30 bids

    I’m building a product, not a demo and not a quick MVP. I’m looking for a a small and strong team who wants to help build something foundational and stay involved, not someone who just wants to close a ticket and move on. The work is split into two tightly connected parts: 1) Code name - RAYA This is the core platform. RAYA is an AI orchestration system — basically the “brain” that handles AI workflows, task routing, logic, decision layers, and integrations. It’s not tied to one product. The idea is to build this once, properly, so it can power multiple products over time. Think platform first, product second. 2) Code name - LEO LEO is the first real product built on top of RAYA. It’s focused on jobs, talent, hiring workflows, 6 other field niche a...

    $2099 Average bid
    Featured NDA
    $2099 Avg Bid
    64 bids

    I'm looking for a qualified freelancer to develop a bot that can navigate the Almaviva Egypt website just like a human would. The bot must be capable of completing three key tasks: - Filling out all necessary appointment-related information - Selecting the date and time of the appointment - Submitting the request for the appointment Considering the constraints of the website, I require a bot that can still function proficiently with a limited number of appointment slots. Moreover, it must be programmed to input login credentials. A crucial requirement is that it can bypass or solve captcha verifications, ensuring a smooth booking process. The essential skillset for this project comprises expertise in Python, as the bot should be developed in this language. Familiarity with web scra...

    $557 Average bid
    $557 Avg Bid
    51 bids

    I need a full-scale online marketplace dedicated to farm equipment that lets buyers and sellers find one another and transact quickly. The core of the build is a web platform where both user types can register, create profiles, and immediately begin interacting. The essential features are: • Product listings with photos, specs, pricing, and location tags • Buyer–seller messaging so parties can negotiate in real time • Integrated payment processing (escrow or direct checkout) for secure transactions • A smart matching function that suggests the right buyers or sellers based on stated needs On the backend I expect a clean admin dashboard to approve listings, manage disputes, and track payments. The front end should be responsive so farmers can use it com...

    $46 Average bid
    $46 Avg Bid
    32 bids

    Hello, I am looking for a professional translator who can accurately and naturally translate Japanese content into English. The ideal candidate will have experience in translating business, technical, or creative content and can maintain the original tone and meaning while producing fluent, high-quality English text. Project Requirements: Translate Japanese text into clear, accurate, and natural English Maintain the original tone, style, and nuance of the Japanese content Ensure proper grammar, punctuation, and formatting Deliver translations on time and communicate proactively if there are any questions Qualifications: Native or near-native English proficiency Proven translation experience with samples or portfolio preferred Attention to detail and commitment to high-quality work Addi...

    $121 Average bid
    $121 Avg Bid
    31 bids

    Add GST Tax Reports, Transaction Reports & Product Expiry to Laravel SaaS POS System I have a Laravel-based SaaS POS & Inventory Management system. The system currently supports billing, purchases, POS, and reports, but does not include GST-compliant tax reporting. I want to enhance the system with GST-ready reports, transaction-type reports, Excel exports, and product expiry tracking, without breaking existing functionality. This is a feature enhancement project, not a fresh build. Scope of Work 1️⃣ GST Sales Report (New Report) Create a new report under the Reports section with: Filters Date range (From – To) Tenant-aware (SaaS safe) Report Output Total Sales Amount (Taxable value) GST Collected: CGST SGST IGST Total GST Collected Grand Total (Including Tax) Requireme...

    $120 Average bid
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    24 bids

    Full-Stack Developers Needed – Large Education Discovery & Admission Platform (Long-Term Project) Project Summary We are building a large, data-driven education discovery and admission platform that helps students search colleges, courses, and entrance exams; compare institutions; access counselling; read reviews; and track admissions. This is a long-term product, not a basic website. Development will happen in structured phases with continuous feature expansion. Mobile apps will be developed later, so backend architecture must be scalable and API-first. We are looking for dedicated developers or a small team interested in growing with a startup-stage platform. Engagement Model Hourly Budget: $4/hour Long-term engagement Phase-based development Continuous work opportunit...

    $6 / hr Average bid
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    39 bids

    PROJECT BRIEF (MVP) New Supermatket – New Mobile App Build (MVP Scope) 1. Purpose of This Document This document defines the Minimum Viable Product (MVP) scope for the New Supermatket mobile application rebuild. It outlines what is essential to launch a stable, scalable, and business-ready platform while deliberately excluding non-critical enhancements. The intent is to enable a fast, controlled launch while laying a strong technical foundation for future growth. 2. Project Overview New Supermatket currently operates a live mobile application processing approximately 250 orders per day. The business has decided to build a completely new mobile application and backend platform from scratch, reusing only the existing user base and product catalog at launch. The new MVP platform m...

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    42 bids

    Broker : Zerodha Kite Algo Platform : Open Algo or any other free Architecture : Modular Requirement : A per attached file

    $22 Average bid
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    9 bids

    I have a live one-driver rideshare site running on PHP, vanilla JavaScript, and MySQL. The basic screens work, but the booking flow is still half-done and the code needs a firm clean-up before I can open it to real riders. Scope of work • Finish the booking pipeline: rider requests → admin approval → driver accepts → ride completes. • Tie the pieces together for Driver scheduling, Passenger booking, and Payment processing so each state transition is recorded and recoverable. • Implement the remaining rule-driven bits—fare calculation (simple flat-rate + distance formula) and time-slot scheduling—inside the existing PHP classes. • Clean up the current code structure, remove dead logic, and resolve the obvious bugs so the MVP is stable ...

    $516 Average bid
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    109 bids

    please read the attached files for full details there is some details that i coudnt add for know there will be a video the show everything if we reach agreement later My budget is fixed so please dont wate my time my budget is below 300$ and payment after finishing only who want to work with me messege me please

    $163 Average bid
    $163 Avg Bid
    94 bids

    I’m putting together a corporate head-count tracker and I want to move quickly from concept to a secure, production-ready application. The backend will run on Spring Boot; the frontend needs to be available both as classic HTML/CSS/JavaScript pages and as a richer React interface, so we can serve different devices and gradually migrate stakeholders toward React. Security is essential. I need full user authentication with clear role separation—Admin and User—implemented with Spring Security (JWT or another proven token strategy). Beyond wiring the login flow, I also want advice on best-practice password storage, CSRF protection, and anything else you see fit to lock things down. Where I need your help: • Designing the Spring Boot architecture, setting up entities, r...

    $82 Average bid
    $82 Avg Bid
    14 bids

    BaseTend is seeking an experienced Zoho Specialist to help design, integrate, and extend our Zoho ecosystem across multiple brands. This role is both strategic and hands-on, covering Zoho architecture, automation, and advanced integrations. A strong portion of this role involves AI and automation tooling, including ChatGPT-style workflows and external orchestration platforms. This is not a one-off task. We are intentionally looking for a long-term working relationship. Core Responsibilities Architect, configure, and optimize our Zoho infrastructure (Zoho One environment) Integrate ChatGPT / OpenAI (MCP-style workflows, APIs, or assistants) into Zoho applications Manage and connect multi-brand operations within Zoho (CRM, Creator, Desk, Projects, Books, etc.) Build and maintain integr...

    $1069 Average bid
    $1069 Avg Bid
    38 bids

    I’m building a small sports POV camera system (VisionCam V1) using a Raspberry Pi Zero 2 W + Raspberry Pi Camera Module 3 Wide (IMX708). I need (A) a simple power/charging board design and (B) a reliable recording service/software for the Pi. Important: My total budget is $600 max for the full scope. Please do not apply if your quote will exceed $600. ⸻ A) Power / Charging Board (Pi Zero 2 W) Goal: Stable power + safe charging for a LiPo, designed for a compact wearable camera. Requirements: • LiPo charging via pogo-pin contacts (no open USB charging port preferred) • Power-path / load sharing so the device can stay on while docked/charging (no reboot) • Stable 5V output to Pi Zero 2 W (with enough current margin) • Battery protection features (basic prote...

    $449 Average bid
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    87 bids

    We are looking for an experienced developer to create a profitable trading bot for Polymarket. The ideal candidate will have a solid understanding of market dynamics and experience in automating trades using algorithms. Your responsibility will include designing, coding, and testing the bot, ensuring it can adapt to rapid market changes and maximize profitability. Please provide examples of previous trading bots you’ve developed and your approach to risk management.

    $583 Average bid
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    72 bids

    I am looking for an experienced developer with strong expertise in Python and web automation to build a smart system for monitoring ticket availability and event updates on the Webook platform. The system should focus on automation, notifications, and usability while following best technical and compliance practices. Scope of Work • Develop a Python-based automation system to monitor events and ticket availability. • Send real-time notifications when: • New events are published • New ticket batches become available • Build a clean and user-friendly dashboard to: • Manage monitoring settings • Control alerts and configurations • Implement structured and scalable automation logic. • Ensure the solution is maintainable and adaptable to f...

    $8097 Average bid
    $8097 Avg Bid
    79 bids

    I need a full-cycle build of an e-commerce web application, starting with UX wireframes and ending with a live, cloud-hosted site. The look must be modern and clean, so every screen—from the product gallery to the checkout flow—should feel streamlined and intuitive on both desktop and mobile. Core scope • Design: High-fidelity mock-ups, responsive layouts, and a coherent brand style that aligns with “modern and clean.” • Development: Front-end (React, Vue, or similar), back-end (Node.js, Django, or comparable), relational database, and solid API architecture. • Key feature: a reliable shopping cart and checkout system with real-time price updates, multiple payment gateways, and confirmation emails. • QA & deployment: automated testin...

    $102 Average bid
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    39 bids

    Full Stack Dev Needed: Repair , and Logic and AI Calling Module We are building an AI-powered lead generation platform. The frontend UI is already designed (Lovable), but the backend logic, AI calling flow, and API handshake are not fully wired correctly. We need a senior full-stack developer who can audit, fix, and complete the system so it works end-to-end. This is not a design role. This is implementation + integration. What the Platform Is Supposed to Do: - Super AI Business Search: Search Google Maps / Yelp / Bing, run AI analysis on businesses, generate prioritized leads - Agency Lead Finder: Identify businesses that need web design, SEO, ads, etc. Critical Flow That Must Work: - User must either enter their phone number to receive AI calls OR pay to use the calling feature - S...

    $7 / hr Average bid
    $7 / hr Avg Bid
    47 bids

    I need a complete build that covers website, Android and iOS releases in one coherent code-base. The visual language is minimalist and clean, so every screen should feel light, fast and distraction-free. Core flow • Public landing page that briefly explains the service and funnels visitors to sign-up. • Email-and-password account creation and log-in. • Once authenticated, users land on a main dashboard that pulls tabular data from the integrated database, that I will fill from my external application. The table must be fully responsive, sortable and paginated to keep the UI snappy on mobile devices. • Stripe integration for subscription management: checkout, plan changes, proration, and a “Download invoice” link that fetches the PDF directly from S...

    $568 Average bid
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    149 bids

    We are looking for experienced developers or a small team to build a high-quality GTA 5 Roleplay project based on FiveM. The goal is to create a commercial RP server comparable in quality and complexity to top RP projects (Majestic-like, not a clone). The project is long-term and will be developed in stages with milestone-based payments. PROJECT SCOPE 1. GTA 5 RP Server (FiveM) Platform & Stack: - FiveM - QBCore (customized) or custom framework - Lua / JavaScript - MySQL - Git (GitHub or GitLab) Core Features: - Account and character system (multiple characters) - Cash and bank system - Inventory system - Vehicle system (ownership, garages, tuning) - Phone system - Jobs - Factions (police, EMS, government) - Admin panel - Action logging Advanced Systems: - Economy balancing - Bus...

    $45854 Average bid
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    67 bids

    I need a secure, web-based panel that lets users liquidate their crypto directly into Indian Rupees. The flow is straightforward: a visitor creates an account with an email-and-password signup, checks the live conversion rate for the supported coins, chooses the amount to sell, confirms, and then reviews the completed order in a personal transaction log. Core requirements • Web interface only—no mobile client at this stage. • Real-time price feed so every quote shown and every sell order reflects the current market. • Simple user account area where people can update profile details and see an at-a-glance balance. • Transaction history page that records date, coin, INR value, status and reference ID. Technical notes You are free to pick the back-end...

    $327 Average bid
    $327 Avg Bid
    28 bids
    Hotel PMS & ERP System
    5 days left
    Verified

    Issuer Information Portfolio Size: 2–5 Hotels (Mixed Portfolio) Operating Geography: Global RFP Issue Date: 7 February 2026 Proposal Submission Deadline: To Be Confirmed 1. Introduction Growbiz Tech Private Limited invites qualified vendors to submit proposals for an enterprise-grade Hotel Property Management System (PMS) and fully integrated Enterprise Resource Planning (ERP) platform. The solution is expected to meet the functional depth, scalability, reliability, and ecosystem maturity associated with industry-leading hospitality systems used for enterprise benchmarking. 2. Project Objectives Support centralized management for 2–5 hotels globally Enable mixed portfolio operations (hotels and serviced accommodation) Deliver enterprise-grade PMS and ERP capabilities Ensure s...

    $4086 Average bid
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    52 bids

    I already run a PAN-card portal and have obtained full documentation plus a live API key for the official Application API. What I now need is clean, well-tested code that plugs this API into my existing workflow so users can: • submit brand-new PAN applications • update records they have already started • pull back the latest application details in real time The API is REST/JSON and secured only by an API key, so no OAuth dance is required—just proper header handling and secure storage of the key on the server. I will provide the key, the docs, and access to a staging instance of the portal. Please wire the endpoints, map all responses to our current UI, build solid error/timeout handling, and give me a short read-me so future devs can follow the flow. Everyth...

    $60 Average bid
    $60 Avg Bid
    20 bids

    I need a robust, well-documented software or a tool that lets the Zowee H155-381 operate with several SIM cards instead of only one. The job involves reverse-engineering the device’s firmware and hardware interfaces, pinpointing the current SIM-handling logic, and producing a tool that can reliably switch between multiple SIMs on demand. The core requirement confirm that you will deliver: A working unlock software for Zowee H155-381 same model shown at pictures i sent that single or double click do steps automatically and make every router we link and use the software on it support multi carriers sim card normally without future re locking Network/SIM lock removal, so the device can be used with other carriers normally without any obstracles Step-by-step instructions (easy...

    $1084 Average bid
    $1084 Avg Bid
    53 bids

    I maintain several production Laravel applications and regularly break the backlog into bites-sized sprints of five tasks. I’m looking for a reliable developer who can jump straight into the existing codebase and deliver new features only—no bug triage or code-review work for now. Here’s how we’ll work together: I assign a ticket, you push a clean, tested solution, and as soon as the task is accepted I release payment and move you to the next item in the batch. You’ll need solid PHP 8.x, Laravel, and Git workflow experience because you’ll be working directly inside the current repository. Clear commit history, adherence to existing coding standards, and concise pull-request notes are essential. If you enjoy short, focused sprints and the satisfacti...

    $8 / hr Average bid
    $8 / hr Avg Bid
    117 bids

    We are a licensed Australian dog breeding business looking for an experienced developer to build a web-based puppy lifecycle management system and customer portal. Important context • Our public website is built in Wix and remains the platform for photos, videos, and marketing • We use SignWell to send and sign contracts and care guides • This app does NOT replace Wix or SignWell • The app is the system of record for puppy data, health, compliance, education, and customer access The project is intentionally split into MVP (Phase 1) and Phase 2. We will build MVP first and only proceed to Phase 2 once MVP is complete and accepted. ––––––––– PHASE 1 – MVP (REQUIRED) ––––––&n...

    $5368 Average bid
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    124 bids

    I’m enhancing a SAP Analytics Cloud story and need a small JavaScript-based popup that lets the analyst add a brand-new member to a specific dimension on the fly. The member will represent financial data, and every field (ID, description, hierarchy placement, etc.) should be captured directly from the user inside the popup itself—no external files or databases involved. Here’s the flow I’m after: • User clicks an “Add Member” button in the story. • A modal (or similarly clear, unobtrusive UI—open to your suggestion) appears, prompting for the new member’s details. • On submit, the script calls the appropriate SAC API to create the member in the designated dimension and refreshes the story or widget so the addition is imm...

    $33 Average bid
    $33 Avg Bid
    17 bids

    I need a seasoned AWS developer to architect and build an end-to-end, cloud-native accounting and tax application. The core of the system must cover invoicing, expense tracking, and a full tax-filing module, all delivered as a secure, multi-tenant SaaS running entirely on AWS. Key functionality • Real-time double-entry ledger supporting multi-currency books • Automated invoicing with payment gateway hooks (Stripe, PayPal, etc.) • Expense capture (manual and OCR upload) that flows straight into the ledger • Full tax engine able to calculate, file, and archive returns for multiple jurisdictions • On-demand reports: Profit & Loss, Balance Sheet, Cash Flow, plus fully customizable layouts • Direct bank feeds: pull transactions via secure bank APIs...

    $2040 Average bid
    $2040 Avg Bid
    31 bids

    The project centres on building a production-ready text-classification pipeline that leverages modern deep-learning techniques. I have a labelled dataset and need end-to-end code that ingests the text, handles cleaning and tokenisation, and trains an accurate classifier. Python is the preferred language; using PyTorch, TensorFlow or another mainstream framework is fine as long as the solution is reproducible and easy to extend. Key deliverables: • Well-commented source code (data loading, model, training loop, evaluation) • Clear instructions to run training on a fresh machine (README or notebook) • Metrics report showing accuracy, precision, recall and F1 on a held-out set • Exported model weights and a small inference script or API endpoint for batch prediction...

    $14 Average bid
    $14 Avg Bid
    17 bids

    We are looking for an experienced developer or team to build a custom ERP web application with full mobile access and PDF invoice generation. Required Features Customer management (create, update, customer-wise history) Inventory & stock management Stock update and availability tracking Invoice creation with PDF download Invoice history and search Business reports: Stock report Total business report Customer-wise report Currency: Oman Riyal (OMR) Tax: 5% VAT Invoice option: With VAT Without VAT Mobile access (mobile-responsive / PWA / Android app support) Secure admin login and user roles

    $682 Average bid
    $682 Avg Bid
    62 bids

    I want to streamline two pillars of my customer journey through the WhatsApp Business API: end-to-end order management and secure phone verification. On the order side, the flow should cover placement, tracking, and final confirmation without requiring any manual intervention from my team. Customers need to see real-time updates, and the system must write each step back to my existing database (REST endpoint available; documentation ready). For phone verification, the system should automatically send a code, listen for the reply, validate it, and return the result to my app. No human action should be necessary once the user responds. Acceptance criteria • Single WhatsApp number handles both processes concurrently without collisions • Clear, commented code (Python, Node, or...

    $509 Average bid
    $509 Avg Bid
    160 bids

    I have a queue of ongoing web applications that need extra hands right away. Everything is full-stack: html template for front end Laravel powers the back end, so you should feel equally comfortable jumping between components, blades, controllers, and API endpoints. During the first phase you will connect to my development machine through AnyDesk or TeamViewer. From there you’ll reach the private servers and scripts you’ll be updating. Each task arrives in a concise ticket that includes screenshots, a short problem statement, and acceptance notes; I’ll be online to clarify anything in real time. Up to five tickets can be open at the same time. As you add or refactor code, please: • keep formatting consistent with the existing style guide, • write brief doc-...

    $8 / hr Average bid
    $8 / hr Avg Bid
    103 bids

    I need a secure, browser-based accounting platform designed for professional accountants. The system must live entirely in the cloud, offer multi-company ledger management, intuitive journal entry screens, adjustable reporting periods, drill-down financial statements, and a full audit trail. Seamless, automated integrations with major Banking systems are critical so statements can be pulled in real time and reconciled quickly. Likewise, the platform must connect to common Payroll systems, posting payroll journals without CSV uploads or manual data entry. I’m happy with any modern web stack—Laravel, Django, Node.js, or similar—so long as it is container-friendly and can be deployed on AWS, Azure, or Google Cloud. Role-based access, two-factor authentication, and encryp...

    $107 Average bid
    $107 Avg Bid
    16 bids

    I need a secure, browser-based accounting platform designed for professional accountants. The system must live entirely in the cloud, offer multi-company ledger management, intuitive journal entry screens, adjustable reporting periods, drill-down financial statements, and a full audit trail. Seamless, automated integrations with major Banking systems are critical so statements can be pulled in real time and reconciled quickly. Likewise, the platform must connect to common Payroll systems, posting payroll journals without CSV uploads or manual data entry. I’m happy with any modern web stack—Laravel, Django, Node.js, or similar—so long as it is container-friendly and can be deployed on AWS, Azure, or Google Cloud. Role-based access, two-factor authentication, and encryp...

    $76 Average bid
    $76 Avg Bid
    11 bids

    I operate a small-to-medium restaurant and our current reservation tool is showing its age. The biggest headache is the booking process—especially when guests need to cancel or tweak their reservation on short notice. I need a streamlined solution that lets customers self-serve while keeping my staff fully in the loop. What I’m after • Friction-free online flow for new bookings, edits, and cancellations • Real-time updates to table availability so a newly freed slot can be re-booked immediately • Automatic confirmations, reminders, and change alerts sent through email, text messages (SMS), and, for guests who use our app, in-app notifications • A clean, browser-based dashboard my team can open on an iPad to see every change without refreshing the page...

    $4548 Average bid
    $4548 Avg Bid
    152 bids

    I pull live messages (roughly 2 000 users, no media) from one of my own Telegram channels through the raw Telegram API in a Python script, yet every event reaches me several seconds late. That lag ruins the downstream logic I built, so I need another pair of eyes to pinpoint the bottleneck and get as close to true real-time as the API allows. What’s already in place – Python 3.11, Telethon (latest) inside a small async service – Standard getUpdates loop plus a simple database write – No proxy/VPN in between Where I’m stuck Even with a bare-bones handler, the gap between a message appearing in the Telegram client and being processed in my script stays at 4-6 s. I have ruled out network latency and local disk I/O. Your task • Analyse the curren...

    $141 Average bid
    $141 Avg Bid
    47 bids

    I’m building a nonprofit smart-locker network and need a developer to stand up the entire backend plus a lightweight web dashboard. The lockers will be opened only after a biometric match—ideally fingerprint or facial recognition—so the API you create must handle secure enrollment, matching, and audit logging without ever storing conventional IDs, phone numbers, or payment data. Core requirements • RESTful (or GraphQL) API hosted on AWS, with a clean data model for lockers, users, and biometric templates • Biometric logic that can accept fingerprint or facial recognition data, hash it securely, and return match / no-match results in under two seconds • Automatic locker assignment, occupancy tracking, and remote release commands, exposed through a sim...

    $10178937 Average bid
    $10178937 Avg Bid
    102 bids

    I need a small web application that reads my existing Esri .GDB (fields include State, District, Sub-District, Village Name, PIN, etc.) and presents the data on an interactive map. From a single screen I must be able to: • choose a record either by selecting a PIN or a Village from a drop-down list or by typing into a Google-style search bar, • have the map zoom to that feature and instantly show its attributes, and • generate a printable report that looks and feels like the ones on —PIN is the key detail that must appear. Standard mapping tools such as measure distance/area, pan, and rotate are required. The interface must also let me upload additional layers (KML, JSON, SHP) and, after editing or selecting a feature, download the result in any of those three fo...

    $578 Average bid
    $578 Avg Bid
    43 bids

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