Node.js Jobs

I need an end-to-end e-commerce solution built from scratch—a modern, responsive website paired with native-quality apps for both iOS and Android (I will need the final IPA and APK files ready for store submission). Core functionality must include: • Secure user registration and login with social sign-in options • A searchable product catalog that handles thousands of items without lag • A smooth shopping cart and checkout flow, complete with payment-gateway integration and real-time order status Beyond those fundamentals, I also have a set of advanced, never-before-used features that will differentiate the platform. I’ll share full details and sketches once we start, but expect custom logic that goes well beyond a template plugin—scalable archi...

I’d like a browser-based Flappy Bird remake built with pure JavaScript, HTML5 Canvas, and light CSS so it runs smoothly on any modern desktop or mobile browser without plug-ins. Core gameplay should feel identical to the original—tap/space to flap, endless scrolling pipes, gradually increasing speed, and an instant restart on collision—so players immediately sense the classic challenge. Beyond that baseline, I need two extras integrated cleanly into the same codebase: • A persistent online leaderboard (top-100 is plenty) that stores nickname, score, and date, refreshing automatically after each round. Feel free to use a simple Node/Express backend with a lightweight database such as SQLite or Firebase; whatever you choose, include clear setup instructions. &bu...

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I’m ready to buy a full InDriver-style solution that’s already finished and running. The package must include: • A single Flutter mobile app where passengers create fare offers and drivers send counter-offers. • A connected admin panel for day-to-day oversight. • The complete backend and database, preferably built with Node.js so I can slot it straight into my stack. I’m not looking for custom development—only a turnkey codebase you can hand over immediately. If you have it, please share a short demo or screen recording plus a note on any third-party services it uses. The final handoff should contain the unencrypted source code, build instructions, and any schema or migration files so I can compile, deploy, and test without surprises. First pro...

I’m building a complete, BetKing-like sports-betting experience that runs smoothly on iOS, Android, and the web. The core of the product is real-time sports wagering, so I need rock-solid live betting, standard pre-match markets, and a full casino section alongside virtual games and a 69-balls lotto. Secure user onboarding is essential—new customers must be able to register, verify, deposit, manage their wallet, and withdraw inside the app. Returning users should enjoy single-sign-on across all three platforms and have easy access to account histories, responsible-gaming limits, and two-factor authentication. I’ll supply the odds feed once the framework is in place; you will wire it into the live and pre-match modules so markets update instantly. The casino, virtual, ...

I’m building a SaaS platform that relies on Stripe Connect, and the centrepiece is a rock-solid multi-party payment flow. I already have initial diagrams and user stories, but they need the eye of an experienced backend architect to turn them into production-grade code. Your primary mission is to refine and implement every step of the multi-party transaction lifecycle—account onboarding, destination charges, transfers, refunds, tax handling—and wire it all together with idempotent webhooks. The goal is a workflow that remains accurate even when a request is repeated, interrupted, or partially processed. Stack details • Node.js / TypeScript, PostgreSQL, Prisma on the backend • React for the dashboard (a junior dev can handle UI tweaks, docs, and other non-c...

I am building a private, production-grade SaaS platform in the hospitality / transactional domain. This is not a prototype or no-code MVP—it is a real system that will process payments and manage multi-party workflows. The product scope, flows, and UI are already defined privately. I am looking for a senior full-stack engineer with a strong backend focus to implement the platform using Node.js (NestJS preferred), PostgreSQL, and Stripe (Stripe Connect strongly preferred). The work includes transactional workflows, role-based access (customer/vendor/admin), platform fees, vendor payouts, refunds, webhook handling, idempotency, failure recovery, admin and vendor dashboards, and country-specific tax/VAT logic. This role is not for WordPress, no-code tools, Flutter/mobile-first builds, o...

Our product is live, under active iteration, and we now need an accomplished full-stack engineer to take ownership of the day-to-day care and improvement of the existing React + Node.js codebase. I’m looking for someone with at least five years of hands-on experience who can step into an ongoing development cycle, quickly understand the current architecture, and keep the platform stable while we continue to roll out new features. Your core mandate is maintenance: triaging and fixing bugs, refactoring fragile sections, tightening security, and smoothing performance bottlenecks before they become user-visible issues. I’ll rely on you to review pull requests, guide junior developers, and ensure deployments run cleanly through our CI/CD pipeline. If you have worked with blockchain...

I need a developer to FIX a deployment bug on a Vercel-hosted website. IMPORTANT RULES: 1. You will NOT receive repository download access 2. You will NOT clone or export source code 3. Work is limited to debugging + configuration only 4. Screen-share or recorded steps are required STACK: - Frontend: React - Hosting: Vercel - Backend: separate API (already working) TASKS: - Identify why the Vercel deployment is failing - Fix environment variable / build / routing issue - Confirm site loads correctly ACCESS PROVIDED: - Read-only GitHub access OR - Vercel dashboard collaborator (NO repo download) - Logs, error screenshots, build output DELIVERABLE: - Website working on Vercel - Written explanation of what was fixed If you ask for full repo download or ZIP files, I will immediately end ...

Build a single code-base mobile application (iOS and Android) that powers my subscription-based business. The core of the project is an e-commerce flow, but every sale happens on a recurring plan rather than one-off checkout. Core requirements • Payment gateway integration so users can start, pause, and cancel their subscription inside the app. • A clean product catalog that supports multiple tiers or bundles. • User reviews and ratings visible on each product page to drive trust and engagement. The experience must feel fully native on both platforms, so frameworks such as Flutter or React Native are acceptable as long as performance and UI polish match platform standards. I will supply branding assets and product data in JSON or CSV; the build should consume those fee...

I’m working with an API where the data used to be exchanged as JSON, so I already know the structure of the payload. Recently, however, the same endpoint started returning data as application/octet-stream instead. What I need help with is understanding how to correctly handle this change: how to inspect what the request body is actually sending, and how the response should be interpreted or decoded so the system continues to work properly. All required data is already available on my side. The main challenge is figuring out how the octet-stream format is constructed and how to send and receive it in the way the API expects, instead of plain JSON. I’m looking for a small, clear solution (Node.js or Python is fine) that can capture the exact request (URL, headers, body), read ...

I already have a Quiz flow in ManyChat connected to ChatGPT; the responses come in plain text, and I need to transform them—without manual intervention—into a 150-page PDF that is sent back to the user within the same chat. The PDF should be a complete book, meaning: • Cover page with Title, Subtitle, Author's Name, and Copyright information • Table of Contents and chapters generated from the content provided by the AI I'm looking for someone to guide me step-by-step through the following steps: 1. Take the plain text output from ChatGPT in ManyChat. 2. Automatically format it in the book format described. 3. Generate the PDF using your recommended tool or script (it could be Make/Integromat, Zapier, Node, Python, or any other you're proficient in...

About the Role We are building a high-scale test & AI Answer Evaluation platform used by Lakhs of students concurrently. The system handles time-bound exams, AI-based handwritten answer evaluation, and burst traffic (3k–10k+ users). We are looking for a senior engineer who can own backend architecture and scalability decisions, not just write APIs. This is a hands-on role with real production ownership. Key Responsibilities Own and evolve the backend architecture for a high-concurrency exam platform Design scalable, fault-tolerant systems with no single points of failure Handle burst workloads (thousands of PDF uploads + async processing) Design and tune background job systems (queues, workers, retries, rate limits) Make architectural decisions around horizontal scaling...

Hi, I have a skilled development team specializing in building scalable web, mobile, and business solutions for startups and growing businesses. Our Expertise Includes: Backend: Node.js, TypeScript (ts-node), Python, PHP, Laravel Frontend: React.js Mobile Apps: Android (Kotlin) CMS & E-commerce: WordPress, Shopify Custom Solutions: APIs, automation, SaaS products, and internal business software We are currently looking for freelancers or business development partners who can bring us genuine projects on a commission basis. Commission Details: 10% – 25% commission per successfully closed project Commission paid after client’s first payment No earning cap, long-term collaboration possible Your role will be to connect us with clients and help close the deal. No tec...

More details: Developed **Now On Campus**, a full-stack campus event management platform that centralizes event discovery, registration, and approvals for students and organizers. Built using **Node.js, Express, and MySQL**, the system supports multi-level approval workflows, role-based access control, and automated calendar-based email reminders, improving event visibility, coordination, and student engagement across campus. What is the main purpose of the NowOnCampus website? Event management What specific event management features do you want on the website? This question was skipped by the user Do you have any specific design preferences for the website? Modern and clean

I’m kicking off a brand-new product and need a full-time React specialist to take charge of everything that lives in the browser. We’re starting from scratch, so you’ll shape the entire front-end architecture, set up the repo, choose the component library, and establish best practices from day one. Here’s the core scope: build a modern React interface that includes secure user authentication, delivers real-time updates without refresh, and ties in smoothly with the major social networks for sharing and sign-in. While the primary focus is pure front-end work, extra points if you can later extend the same logic to React Native or another mobile stack—keeping us truly cross-platform. You’ll collaborate closely with me on product decisions, ship fast, and ...

IMPORTANT – READ CAREFULLY This project includes a detailed technical specification provided in an attached document. Proposals that: do not clearly demonstrate that the document has been read, ask generic questions already answered in the document, are automatic, copy-paste, or bot-generated, will be immediately rejected. If you want to chat, you must first prove you understood the requirements described in the attached document. Requests to “discuss the project” without doing so will be ignored. Price-only discussions without technical understanding are not acceptable. Please read the document carefully before bidding.

Project: Offline-First Inspection & Reporting System (Flutter + Firebase) We are looking for an experienced Flutter + Firebase developer to build a professional internal inspection and reporting system for hazardous-area (Ex) equipment inspections. This is a serious MVP project with a detailed Software Requirements Specification (SRS), clear workflows, and a well-defined architecture. The system is intended for real-world field use by inspectors and office staff. Project Overview The system consists of two main components: Mobile Android application (Offline-First) for field inspectors Web dashboard for office review, reporting, and exports The core concept is strict data integrity: field inspection data is permanently locked after submission, while office users can prepare and ed...

Location: US Citizens, Canadians, or Europeans Position Type: Contract Start Date: ASAP Tech Stack Node.js TypeScript Google Cloud (GCP) Docker Role Overview We’re looking for a Node.js / TypeScript Developer to help build and maintain backend services and APIs on Google Cloud. You will work on scalable microservices with guidance from senior engineers, focusing on code quality, performance, and reliability. This is a hands-on backend role with room to grow. Key Responsibilities Develop and maintain backend services using Node.js and TypeScript Build and support REST APIs and microservices ( / NestJS) Deploy and manage services on Cloud Run, Cloud Functions, or GKE Add and maintain logging, monitoring, and basic metrics Help improve performance, scalability, and reliability Fo...

I’m planning a new digital initiative and need an experienced developer—or small team—who can guide me from the first technical decisions through a successful launch. We’ll decide together whether the solution should be a website, mobile app, or standalone software once you’ve reviewed my requirements and suggested the most effective approach. First, I’ll look for a concise technical proposal that covers: • Recommended tech stack and architecture • Milestone breakdown with estimated timelines • High-level roadmap for an MVP and subsequent iterations Once we agree on the plan, your responsibilities will include: • Setting up the repository and development environment • Building core features for the MVP with clean, well-...

Project Details RPC is building the next-generation customer portal for our fintech brand, and I need a full-stack web application that places customer relationship management at its core. The interface must be intuitive for customers, allowing them to: • create an account or sign in securely - submit a basic loan request - see their needs list - complete an application - complete credit authorization and Fico credit check with payment - submit payment for 3rd party reports • manage their personal profile and KYC details • upload supporting documents and track each loan application’s status in real time Alongside the customer view, an operations login is essential so my internal team can see the entire pipeline, update application milestones, and respond promptly to c...

Our existing MERN application already has a solid backend, yet the React layer now needs love. I want to fold in two key improvements at once: smoother, modern UI/UX and the addition of new feature blocks—specifically interactive forms that validate on the fly and a real-time data display fed by live updates. The current codebase is organized, uses functional components and hooks, and is version-controlled on GitHub; you’ll receive full access once we start. Here’s what a successful hand-off looks like for me: • A refreshed interface aligned with our design guidelines, responsive across devices and WCAG-friendly. • Dynamic forms built with React Hook Form (or a comparable lightweight library) that provide instant feedback without re-loads. • A real-time da...

I’m extending my existing Node.js (API layer) and (frontend) website with a compact, privacy-first media converter. Your task is to wire a server-side FFMPEG (or equally efficient) pipeline into the current codebase and surface it through a page that feels native to our brand. Core requirements • Conversions: MOV → MP4, WEBM → MP4, MP4 → MOV, MP4 → MP3 only—no other formats need support. • No accounts, no history, no long-term storage. Uploaded files must auto-purge as soon as the download finishes or, at most, 5–10 minutes later. • Size caps: 200 MB for video, 100 MB for audio, enforced both client and server side. • UI: a drag-and-drop zone styled to match the site’s existing color palette, typography, and button sty...

REQUIRED STANDARDS FOR THIRD-PARTY PROVIDERS: Provide a bidding service between multiple bidders. There are two integration options: using GAM or without using GAM. Both options allow flexible configuration of price granularity according to requirements. Multiple bidders can be added. At the site level, it is possible to configure Rev Share, bid floor, price, and storage allowance. Multiple tags can be added. At the tag level, bidder-specific parameters can be customized as required. Integrated with CMP code for both EU and US regions, supporting two modes: IAB-compliant and static. Supply Chain feature: allows configuration of the supply chain depth and supports per-bidder supply chain settings. User Sync feature: required by many bidders when running Prebid. Custom User ID module...

REQUIRED STANDARDS FOR THIRD-PARTY PROVIDERS: Provide a bidding service between multiple bidders. There are two integration options: using GAM or without using GAM. Both options allow flexible configuration of price granularity according to requirements. Multiple bidders can be added. At the site level, it is possible to configure Rev Share, bid floor, price, and storage allowance. Multiple tags can be added. At the tag level, bidder-specific parameters can be customized as required. Integrated with CMP code for both EU and US regions, supporting two modes: IAB-compliant and static. Supply Chain feature: allows configuration of the supply chain depth and supports per-bidder supply chain settings. User Sync feature: required by many bidders when running Prebid. Custom User ID module...

I’m looking for a reliable automation solution that can gradually warm up more than 20 separate Gmail inboxes so my future campaigns stop landing in the spam folder. The core objective is clear: build and maintain solid sender reputations across every account and avoid Gmail’s spam filters. Here’s what the bot must do from day one: connect to each mailbox, schedule small-volume sends, generate natural-looking opens and replies, and steadily ramp activity at a human-like pace. A web-based dashboard or simple CLI where I can add new accounts, monitor health scores, pause an inbox, or tweak daily limits will make ongoing management easier. Technical freedom is yours—Python with the Gmail API, Node.js plus IMAP/SMTP libraries, even a headless browser setup with Sele...

I HAVE A WEB APPLICATION MADE IN REACT JS , NODE JS AND POSTGREY SQL . I WANT IT THOUROUGHLY TESTED BY AN EXPERT .

I want to turn WhatsApp into my personal productivity assistant. The goal is a small AI-powered bot that will: • Send me meeting reminders, task-deadline nudges and a concise daily agenda • Allow fully recurring reminders, let me tweak the wording of every prompt, and stay in sync with my existing Google / Outlook calendars • Work entirely through plain text commands inside a regular WhatsApp chat (no extra interface) A clean, server-side solution built on the WhatsApp Business API or a reliable gateway such as Twilio is fine; just make sure it can parse short commands like “/remind 3 pm project sync” or “/agenda tomorrow”, store them, and fire the correct messages back at the scheduled times. Deliverables • Source code, clearly document...

I have a development/testing version of my project hosted on the Vercel free plan. The project is built using Angular (frontend) and Node.js (backend). Testing has been completed, and now I want to move the project to a production server on Hosting Raja. Additionally, the code currently uses API services from s** pvt Ltd., which need to be replaced with I****pvt ltd. APIs. Scope of Work: Deploy existing Angular + Node.js code to Hosting Raja production server Configure production environment (Node.js setup, environment variables, build process) Build and deploy Angular frontend properly Replace existing ****** Pvt Ltd API integration with **** pvt ltd. API integration Ensure all API functionality works correctly after migration Test and verify the full application in production Re...

I need an experienced Angular hand for a focused two-hour session that starts the moment we connect. We will work side-by-side over live screen-sharing in an existing Angular 13 codebase, chasing down small UI bugs and polishing a couple of components I’ll point out on the call. You must be able to jump straight into the structure—components, services, modules—trace problems with dev-tools, and push clean, well-named commits that still build with ng build --prod. I’m paying ₹500 per hour and will close the contract after the two hours unless we both decide an extension is worthwhile. Deliverables during the call: • Fixed or enhanced Angular 13 components exactly as we discuss • All identified bugs replicated and resolved on my machine • Fi...

Project Title AI Expert Needed to Teach & Mentor Me in Building Gen-AI Powered Mobile Applications Project Description I am looking for an experienced AI expert / Gen-AI developer who has hands-on experience building mobile applications using Generative AI tools (such as ChatGPT, OpenAI APIs, Claude, Gemini, LangChain, etc.) and can teach and mentor me step-by-step to build similar applications independently. The goal of this project is learning by building — not just explanations. I want to understand how real-world Gen-AI mobile apps are architected, developed, and deployed. What I Want to Learn How to design and build AI-powered mobile apps (Android / iOS / cross-platform) Using Gen-AI models (ChatGPT / OpenAI / Claude / Gemini, etc.) inside mobile apps Prompt engineering fo...

I'm looking for an experienced Full-Stack Developer to build a modern hotel introduction website with an integrated AI-powered support chatbot. The website will present hotel information, rooms, services, and contact details with a clean, high-end design. In addition, I want a smart support bot to assist visitors with common questions and basic booking-related inquiries. A complete design will be provided for this project. - Strong experience with React for frontend development - Solid backend experience with Node.js and/or Python - Experience building REST APIs - Experience integrating chatbots or AI-based support systems - Good understanding of responsive and modern UI/UX - Clean, maintainable code and good communication skills This is a great opportunity for a developer who enjoys ...

bjetivo: chatbot web con GPT (OpenAI) para atender leads, seguir un Prompt Maestro editable y capturar datos. Must-have: • Widget web (burbuja) + modo embebido opcional • Panel admin: • campo “Prompt Maestro” • slider de tono (0–100) • mensajes: saludo, re-saludo por inactividad, cierre • Captura de datos con validaciones: • nombre, ciudad/estado, WhatsApp (10 dígitos), tipo de proyecto, tiempo de arranque • Lógica anti-repetición (no volver a pedir nombre/ciudad si ya existe) • Re-saludo si no responde (ej. 2 min y 10 min, máximo 2 intentos) • Historial + export a Google Sheets/CRM • Seguridad: • no exponer la API key en el front • rate limit + logs Nice-to-have: ...

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I want to release a cross-platform productivity app modelled on Meristemlab, delivered for both iOS and Android. Meristemlab’s blend of task management, calendar integration and team collaboration is the baseline, but I need roughly ten specific tweaks in flow, UI and feature set to suit my organisation’s workflow. You will design and build both mobile versions, create or adapt the back-end (Firebase, Node, or a stack you recommend), and prepare the apps for submission to the App Store and Google Play. Push notifications, offline access for tasks, and lightweight analytics are part of the scope. Deliverables • Ready-to-publish iOS and Android builds • Source code with clear documentation • Back-end/API and simple admin panel • Deployment notes and ...

The landing page is already finished in and its small API hooks are working, so coding changes are off the table. What I need is a quick but knowledgeable walk-through that gets the site live on the dedicated hosting account. Access to cPanel will be granted only through a screenshare session (freelancer—whatever else is permitted), so the job is essentially a guided deployment: • build or export the project for production • upload the correct files into the proper directory on cPanel • configure Node/Passenger or the static-export setup, plus any .htaccess tweaks that typically needs on cpanel • confirm the page renders correctly at the root domain without breaking its existing API calls Once the site is visible to the public and you’ve shown me...

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Architect-Track | Earn-In Opportunity Project Overview We operate KYCgini, a production-ready KYC / AML compliance platform owned and operated by a USA-registered LLC. The platform includes: Node.js + TypeScript backend React / Vite admin and client dashboards KYC onboarding, document verification, risk scoring, audit logs Sanctions / PEP screening integrations Solana wallet verification for identity context (not trading) CI/CD pipelines already in place This is not a greenfield build and not an MVP. We are seeking a hands-on Enterprise Software Architect to take ownership of system design, architectural decisions, and long-term technical direction, while working closely with an existing execution developer. Engagement Model (Important – Please Read) This is an architect...

I’m ready to launch a brand-new WordPress site and need an experienced developer to take it from a blank install to a polished, fully working website. Because I haven’t locked down the site’s exact purpose or visual style yet, your input will be valuable—whether the final product serves as a blog, an online store, or a clean portfolio. Here’s what I expect: • A responsive, SEO-friendly build on the latest stable WordPress version, configured on my hosting or migrated to it once complete. • A theme (custom-coded or a premium starter) refined to match a professional, contemporary look. Feel free to recommend page builders or block-based workflows if they speed things up without sacrificing performance. • Core pages set up (Home, About, Cont...

Platform Architecture Requirement The system must be enterprise-grade, scalable, and secure. Preferred Tech Stack (Must Have) Mobile App: Flutter (Preferred) / React Native Single codebase for Android & iOS Backend: Node.js (NestJS / Express) Microservices-ready architecture Database (Large Data Handling): PostgreSQL / MySQL (Primary – structured data) MongoDB (User activity, logs, flexible schemas) Redis (Caching, sessions, high-speed reads) Cloud & Infra: AWS / GCP / Azure Auto-scaling enabled Load balancer + CDN Object storage (AWS S3 equivalent) Admin & Franchise Panels: Web-based dashboard (React / Angular) Role-based access control Key Functional Requirements Franchise Model Support Central Admin (Super Control) Franchise Admin (City / Zone wise) Franchise-wise or...

I'm looking to develop a comprehensive refund system for e-commerce transactions. The system should support both full and partial refunds, and users should be able to initiate refund requests through an online form. Key requirements: - Support for full and partial refunds - User-friendly online form for refund requests - Secure and efficient processing of refund transactions Ideal skills and experience: - Experience in developing refund systems - Strong understanding of e-commerce platforms - Proficient in creating user-friendly online forms , please mention your price for work too while messaging

I'm looking for a skilled developer to expand an existing building maintenance platform using React.js and Node.js with mysql and AWS cloud. This platform will be used by both maintenance staff and management. Key requirements: - User-friendly interface for maintenance tasks - Secure management dashboards - Real-time updates and notifications - Robust backend with Node.js Ideal skills and experience: - Proficiency in React.js and Node.js - Experience in building user-friendly interfaces - Strong understanding of real-time data handling - Background in developing secure management tools Please provide examples of similar work done.

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Hi, I am looking for a Google Cloud Platform (GCP) expert to help me troubleshoot and fix a deployment issue. The Situation: I am trying to deploy a generated chatbot application directly from Google AI Studio using the "Deploy app on Google Cloud" feature. The Problem: The build process completes, but the Cloud Run service fails to route traffic. I am receiving the following error message in the Cloud Run console: "Revision is not ready and cannot serve traffic. The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable within the allocated timeout." What I need: Review my current configuration (I can share my screen or provide access). Identify why the container is not binding to the correct port (8080)...

We are looking for an experienced developer to build a mini supply chain tracking system using the MERN stack integrated with blockchain technology. The system will allow us to track products through different stages of the supply chain, with key events securely recorded on the blockchain to ensure data integrity and transparency. Key requirements: MERN stack web application (React, Node.js, Express, MongoDB) Simple blockchain integration (Ethereum / Polygon / BSC) Record product lifecycle events on the blockchain QR code generation for product tracking Admin dashboard to manage products and stages Wallet integration (MetaMask) for blockchain interactions This project is intended as a lightweight MVP, focusing on core functionality rather than complex features. Clean code, basic U...

I already have an OLX-style marketplace ready to go, built with React / on the front-end and Node.js / Express on the back-end. The codebase lives in a private repository and contains no production data, so this engagement is a fresh deployment rather than a migration. What I need is a clean, secure, production-ready rollout on AWS within 5–7 days. My preference is to run the application on EC2, connect it to a brand-new MySQL database on Amazon RDS, store images and videos in S3, and distribute static assets through CloudFront. Environment variables, IAM roles, security groups, HTTPS (ACM), and basic monitoring must follow AWS best practices. Deliverables I will use to sign off: • EC2 instances (ideally in an auto-scaling group) reachable via my domain behind an Applicatio...

PROJET METAZIK – VERSION FINALE AVEC PROGRAMME AMBASSADEURS Titre du projet Développement MVP – Application musicale & sociale (Spotify + SoundCloud + TikTok) ⸻ Présentation du projet Je recherche un développeur full-stack expérimenté (ou une petite équipe) pour concevoir le MVP de METAZIK, une application musicale et sociale (web + mobile). METAZIK est une plateforme hybride innovante qui combine : • L’expérience utilisateur fluide de Spotify (lecteur musical, playlists, découverte) • Le côté réseau social de SoundCloud (publication musicale, likes, commentaires) • L’usage viral de TikTok (vidéos courtes, challenges autour des chansons) METAZIK n&rs...

My production React front-end is showing its rough edges: form submissions intermittently fail, data sometimes renders inaccurately, and certain user interactions feel sluggish. These are clear functional errors with an extra dose of performance trouble, all confined to the React layer of a typical MERN build. I need a developer who can dive straight into the existing codebase, trace the root causes, and patch them without disturbing stable modules. Expect to work with modern React (hooks, context, maybe a sprinkle of Redux) alongside the usual REST calls coming from our Node/Express API. Deliverables • Reliable form submissions—no console errors, network retries, or unexpected reloads • Accurate, real-time data display that survives page refreshes and route changes ...

I need a React + CesiumJS site that visualises live satellite orbits in smooth 3D while remaining completely static at deploy time and fully offline when it runs. Back-end job • A small Node or Python utility fetches fresh Two-Line Element (TLE) sets from on a schedule I can adjust, parses them with the SGP4 algorithm, and saves the resulting latitude, longitude and altitude to a lightweight SQLite database. • Security, GDPR and rate-limit compliance are essential: all keys and credentials must stay server-side and never leak to the browser. Front-end job • The static bundle reads only pre-computed positions, interpolating them client-side so CesiumJS renders a fluid real-time globe. • Visitors can: – watch satellites in real-time, – scrub bac...

Project Summary We are hiring a senior Hyperledger Fabric consultant to design and help implement a permissioned, enterprise-grade blockchain network. This is a consulting-first engagement for an experienced practitioner with real production deployments, not a junior or tutorial-based role. What You’ll Do Design Hyperledger Fabric network architecture Set up multi-organisation and channel structures Configure MSP, CA, identities, and access controls Implement Raft ordering service Develop or review chaincode (Go / Node.js) Support Docker / Kubernetes / cloud or hybrid deployment Advise on security, governance, and best practices Produce clear documentation and handover (UI/front-end work is out of scope.) Requirements 5+ years hands-on Hyperledger Fabric experience Proven production ...