.NET Core Web API Developers For Hire
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Hire richardb063
Full Stack Developer with strong experience building scalable web and mobile applications, backend systems, APIs, and AI-powered solutions. Skilled in modern frontend and backend technologies including React, Next.js, Node.js, Python, PHP, Java, Spring Boot, Flutter, and cloud platforms like AWS and Azure. Experienced...Full Stack Developer with strong experience building scalable web and mobile applications, backend systems, APIs, and AI-powered solutions. Skilled in modern frontend and backend technologies including React, Next.js, Node.js, Python, PHP, Java, Spring Boot, Flutter, and cloud platforms like AWS and Azure. Experienced in developing SaaS platforms, CRM systems, AI agents, WhatsApp automation, payment integrations, and real-time applications. less -
Hire asharib17
Hi, I'm Asharib, a software engineer based in Kyoto. I deliver high quality, tailor-made software solutions that drive real results. With 6 years of proven experience, I specialise in modern tech stacks including MERN, MEAN, MEVN, Ruby on Rails (RoR), and Python. From building custom CMS platforms to developing...Hi, I'm Asharib, a software engineer based in Kyoto. I deliver high quality, tailor-made software solutions that drive real results. With 6 years of proven experience, I specialise in modern tech stacks including MERN, MEAN, MEVN, Ruby on Rails (RoR), and Python. From building custom CMS platforms to developing scalable social networks, I create robust, user-friendly products that empower businesses to grow and succeed. Every project we take on is driven by precision, innovation, and a commitment to delivering beyond expectations. Whether you need a complete product from scratch or expert development support, we are your trusted partner for future-ready software solutions. less -
Hire Mario551
I am a systems engineer with an emphasis in software development and project management. Fullstack software developer in .NET technologies. Do you want to develop a back-end service in .net and manage privileges? Or do you want to build a back-end service alongside a Blazor page, desktop interface, or mobile app on...I am a systems engineer with an emphasis in software development and project management. Fullstack software developer in .NET technologies. Do you want to develop a back-end service in .net and manage privileges? Or do you want to build a back-end service alongside a Blazor page, desktop interface, or mobile app on MAUI? Do you want to query the database and manage millions of records? Do you want to create a relational schema in Sql Server or PostgreSQL? Then it will be a pleasure to offer you my services as a developer and reach the prompt solution in the stipulated time. Main skills - C# Developer and VB Developer. - .NET and .NET Framework. - ASP.NET. - Blazor. - Mobile development in .NET MAUI. - Typescript Developer. - Angular. - TDD and documentation. - Relational database Sql Server and PostgreSQL. - Linux operating systems. Secondary skills - Development in Python. - Development in Golang. - Development in C. less -
Hire Agiletechstudio
Microsoft-Certified Software Engineers & AI Experts We're a Microsoft-certified Solutions Architect Expert team, ranked among the Top of Freelancer professionals, with 12+ years of experience delivering custom software, enterprise applications, AI solutions, and digital transformation projects for businesses...Microsoft-Certified Software Engineers & AI Experts We're a Microsoft-certified Solutions Architect Expert team, ranked among the Top of Freelancer professionals, with 12+ years of experience delivering custom software, enterprise applications, AI solutions, and digital transformation projects for businesses worldwide. With 200+ clients and 325+ successfully delivered projects across the US, Canada, UK, Europe, Australia, and the Middle East, we build reliable, scalable, secure, and high-performance solutions tailored to real business needs. Our Expertise • Custom & Enterprise Application • ERP & Accounting System • CRM & Customer Management Platform • POS & Retail Management System • SaaS Product Development • AI-Powered Applications & Automation • Data Science & Analytics • Computer Vision & Image Processing • IoT & Smart Connected System • Cross Platform Application • API Development & Third-Party Integrations • Cloud Solutions & Migration • UI/UX Design & Prototyping • Inventory, HR & Employee Management System • Order & Multi-Branch Management Technology Stack ASP.NET Core, ASP.NET MVC, Blazor, SignalR, .NET MAUI, DevExpress & Web APIs AI & Machine Learning || Agentic AI, Automation, Roboflow ,chatbot,YOLOv8,Computer Vision,Deep Learning,Object Detection, Generative AI,LLM,RAG,CUDA / GPU, YOLOv8, PyTorch, Data & Computer Vision || Data Science, Data Analysis, Business Intelligence, Data Visualization, Image Processing & Classification, Object Detection, OCR, Face Recognition IoT & Cloud || IoT Applications, Device & Sensor Integration, Real-Time Monitoring, Industrial IoT, Microsoft Azure, AWS & Google Cloud Web & Backend|| React.js, Next.js, Angular, JavaScript, TypeScript, HTML5, CSS3, Tailwind CSS, Bootstrap, Node.js, Express.js, PHP, Django, Python, REST APIs & GraphQL Mobile| Android, iOS, Swift, Flutter, Xamarin, .NET MAUI, Cordova & Google Maps Databases || SQL Server, MySQL, PostgreSQL, MongoDB, MariaDB & SQLite, SQLite, SQLAlchemy CMS & Design| WordPress, Shopify, Magento, Joomla, Figma, Photoshop & Illustrator Languages || C#, VB.NET, Java, JavaScript, TypeScript, PHP, Python, Dart, C++ & Ruby Industries || Healthcare, Manufacturing, Retail & E-commerce, Finance, Insurance, Construction, Mining, , Education, Real Estate, Food, Travel & Tourism, Fleet, and Government & Public Sector. Why Work With Us? ✔ Top Freelancer Professionals ✔ 12+ Years of Software Engineering Experience ✔ AI, Machine Learning & Generative AI Expertise ✔ Agile development & transparent communication ✔ Long-term support & maintenance We select the right technology & architecture based on your requirements, budget and long-term goals. Whether you need an ERP, CRM, POS, SaaS platform, enterprise application, AI solution, computer vision system, IoT platform, mobile app, e-commerce solution, custom software, we are ready to help. Let's discuss your project and turn your requirements into a reliable, scalable, and production-ready solution. less -
Hire mazharsahil12
I am a Senior Full-Stack Developer with extensive experience delivering scalable, secure, and high-performance web and mobile applications. I help startups and established teams transform ideas into production systems that support real operations and long-term growth. I work across the entire lifecycle - discovery,...I am a Senior Full-Stack Developer with extensive experience delivering scalable, secure, and high-performance web and mobile applications. I help startups and established teams transform ideas into production systems that support real operations and long-term growth. I work across the entire lifecycle - discovery, architecture, development, deployment, and continuous improvement. My focus is on building resilient solutions, controlling technical debt, and enabling teams to ship features with confidence. ❇️ Core Expertise ❇️ ➡️ Backend Engineering: JavaScript, Node.js, Express.js, TypeScript, C#, .NET Core, ASP.NET MVC, ASP.NET Web API, PHP, Lavavel, Entity Framework, signalR, RabbitMQ, MassTransit, Kubernetes ➡️ Frontend & Web: React, Next.js, Redux, Vue.js, Angular JS, Material UI, Semantic UI, Tailwind CSS, responsive UI development, PSD, HTML, CSS, Bootstrap, Wordpress, Wix ➡️ Mobile: React Native & Flutter for iOS and Android, push notifications, offline-ready patterns ➡️ Databases & Storage: SQL Server (complex stored procedures), MySQL, MongoDB, Firebase, Firestore, PostgreSQL,Supabase ➡️ API Design: REST, GraphQL, Swagger/OpenAPI, versioning ➡️ Security & Identity: OWASP best practices, JWT, OAuth, Auth 2.0, Identity Server, role-based access control ➡️ Cloud & DevOps: AWS, Azure, Docker, CI/CD pipelines, environment configuration, logging & monitoring ➡️ AI & ML Tools: GPT-3.5/4/5.5, OpenAI, LangChain, Whisper, ElevenLabs, Huggingface, Stable Diffusion, TensorFlow, Pandas, NumPy, and chatbot development (text + voice). ➡️ Automation & Integration: Web scraping, workflow automation, API integration, Airtable, Notion, Google Sheets, FastAPI, and trading bots (Pine Script), Stripe, PayPal, third-party APIs, webhooks. ➡️ Servers: Dedicated, Shared, VPS, Private Servers ➡️ Design: UI / UX Design, Photoshop, Adobe XD, Figma, Sketch, InVision Legacy Systems & Modernization ➡️ VB.NET, ASP.NET Web Forms, Windows Forms, Desktop applications ➡️ Feature enhancements and module extensions ➡️ Bug fixing and performance improvements ➡️ Refactoring toward maintainable architectures ➡️ Gradual migration to .NET Core / modern stacks ➡️ Stabilizing long-running production systems Architecture & Engineering Practices ➡️ Clean / Layered architecture ➡️ SOLID principles ➡️ Domain-driven design concepts ➡️ Microservices & modular monoliths ➡️ Dependency injection ➡️ Repository & Unit of Work ➡️ Event-driven approaches ❇️ WHAT YOU CAN EXPECT ❇️ ➔ Daily Communication With Quick Replies To Messages ➔ Daily Work Update Report On Worked Things Of That Day ➔ Bug-Free Work With Proper Testing As I Know That Client Is Not Tester ➔ Guaranteed Work ➔ Ongoing Support As Needed Bases Sounds interesting? Let's have a quick Freelancer call/chat to discuss your project. less -
Hire miteshr10
I am versatile and accomplished software developer and designer with extensive expertise in UIUX design, Logo creation, and full stack application development. Proficient in leveraging modern technologies to deliver innovative, user centric, and scalable solutions tailored to client requirements. Technical...I am versatile and accomplished software developer and designer with extensive expertise in UIUX design, Logo creation, and full stack application development. Proficient in leveraging modern technologies to deliver innovative, user centric, and scalable solutions tailored to client requirements. Technical Expertise UIUX Design: Skilled in creating intuitive and visually engaging user interfaces. Tools: Figma, Adobe XD, Sketch, Photoshop, Illustrator. Expertise in wireframing, prototyping, and user research to enhance usability. Logo Creation: Adept at designing impactful brand identities and creative logos. Tools: Adobe Illustrator, CorelDRAW, Canva, Affinity Designer. Focused on delivering designs that resonate with target audiences. React Native Development: Skilled in developing cross platform mobile applications using React Native. Proficiency in building reusable components and implementing efficient navigation with React Navigation. Expertise in managing state using Redux and Context API. Hands on experience with native modules, integrating APIs, and deploying apps to the App Store and Google Play. Focused on performance optimization and ensuring smooth animations and transitions. Flutter Development: Proficient in building cross-platform mobile applications using Flutter and Dart. Expertise in custom widgets, state management (Provider, Riverpod), and Firebase integration. Strong focus on performance optimization and seamless UI design. .NET Development: Comprehensive experience in developing enterprise-grade applications using: ASP.NET MVC ASP.NET Core Web API and WCF Entity Framework (EF) and LINQ Proficient in C#, Razor Pages, and Blazor for interactive web applications. Skilled in using SQL Server for backend database solutions. Angular Development: Expertise in building dynamic, single page applications (SPAs) using Angular. Proficient in Angular Modules, Components, Directives, and Services. Skilled in RxJS for reactive programming and NgRx for state management. Hands on experience with RESTful APIs and Angular Material. Combining creative design capabilities with technical prowess, I aim to deliver solutions that not only meet but exceed user and business expectations. less -
Hire giviniinternet
We are a team of highly skilled developers with expertise across a wide range of technologies, frameworks, and platforms. Our experience spans enterprise applications, custom software solutions, web and mobile platforms, blockchain, and NFT-based projects. Technical Skill Set - Microsoft Technologies: Asp.Net, MVC,...We are a team of highly skilled developers with expertise across a wide range of technologies, frameworks, and platforms. Our experience spans enterprise applications, custom software solutions, web and mobile platforms, blockchain, and NFT-based projects. Technical Skill Set - Microsoft Technologies: Asp.Net, MVC, C#, .Net Framework, .Net Core (3.1, 5, 6, 7, 8+), Blazor Web/Server - UI & Testing: Selenium Web UI Testing, Telerik Controls, Kendo UI, DevExpress, Angular, AngularJS (2/4/7/10+), TypeScript - Enterprise Platforms: SharePoint, Power Automate - Web & CMS: WordPress, WordPress Plugin Development, NopCommerce (Plugins, Customizations, Theme Development) - Open Source & Frameworks: PHP, Laravel, CodeIgniter, MERN Stack, React JS, Angular, Next JS - Frontend Technologies: JavaScript, jQuery, CSS, HTML - Databases: MySQL, SQL Server, PostgreSQL, Oracle - API Development & Integrations: Web API 2, REST API, Microservices, SOAP, Social Network APIs - Logistics & Finance Integrations: UPS, FedEx, DHL, DPD Shipping APIs, QuickBooks API Integration - Collaboration & Automation: Zoom API (automation, scheduling, reminders), File Sync & Sharing solutions with Azure Blob Storage - Blockchain & NFT: Smart Contract Development, NFT Marketplace Solutions, Token Creation & Management, Wallet Integration, Blockchain-based dApps Our Promises * Regular Communication * Daily & Weekly Work Updates * 100% Guaranteed Stress-Free Work * Guaranteed Data Security & Privacy * Adopted Agile Development Methodology * Mature Technology & Process Expertise Engagement Models * Fixed Cost * Time & Material (Hourly) * Dedicated Team * Hybrid Model (Fixed + Hourly) less -
Hire MinaMaroufIt
I build custom software solutions for startups, growing businesses, and modern companies that need reliable, scalable, and results-driven technology. With 7+ years of experience, I help clients create and improve digital products across AI, SaaS, web, mobile, eCommerce, automation, and backend systems. I support...I build custom software solutions for startups, growing businesses, and modern companies that need reliable, scalable, and results-driven technology. With 7+ years of experience, I help clients create and improve digital products across AI, SaaS, web, mobile, eCommerce, automation, and backend systems. I support projects from planning and architecture to development, testing, deployment, and ongoing improvement. Here are my key skills: ✔️ AI & LLM Development | AI Applications | Prompt Engineering | Intelligent Automation | AI Workflows ✔️ SaaS Platform Development | Scalable Architecture | Multi-tenant Systems | Admin Panels | Subscription Systems ✔️ Full-Stack Development | Web Applications | Frontend & Backend | REST APIs | Responsive Systems ✔️ Backend Engineering & System Design | API Development | Microservices | Database Design | System Architecture ✔️ Automation & Workflow Optimization | Business Automation | Process Optimization | API Integrations ✔️ eCommerce Solutions | Shopify | WooCommerce | WordPress | Custom Integrations ✔️ Performance Optimization | Debugging | Bottleneck Fixing | Code Refactoring | System Stability ✔️ Cloud & Deployment | AWS | Scalable Hosting | Deployment Pipelines ✔️ Third-Party Integrations | Payment Gateways | CRMs | External APIs | Webhooks ✔️ Dashboards & Admin Systems | Reporting Tools | Analytics Dashboards | Internal Systems ✔️ Product Development Lifecycle | MVP Development | Testing | Deployment | Scaling ✔️ Code Quality & Maintainability | Clean Code | Documentation | Long-Term Scalability I help clients launch faster, automate workflows, and build dependable products that scale. I believe strong products come from clear communication, practical engineering, and consistent execution. My goal is to deliver solutions that are not only functional but dependable, maintainable, and ready for real business growth. less -
Hire alfatrade2
Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and...Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and optimization (PostgreSQL, MySQL) - Bug fixing and code refactoring - Docker containerization and deployment - Message-driven systems with Apache Kafka My current stack: Java 21, Spring Boot 3.3, PostgreSQL, Kafka, Redis, Docker, Keycloak, Gradle/Maven Why work with me: - I build and maintain a 30-microservice e-commerce platform from scratch - Clean code, clear communication, on-time delivery - Available for both small tasks and long-term projects - Fast response time — usually within 1-2 hours I focus on writing maintainable, well-tested code that works in production. Let's discuss your project — I'm ready to start immediately. Also experienced in architectural design, structural calculations, and aluminum window/door systems for residential and industrial projects. Full documentation with CAD drawings, specifications, and load calculations. less -
Hire ska234
Thank you for visiting my profile. I am an AI Developer with over ten years of professional experience in software engineering. I began my career as a Full Stack Web and Mobile Engineer, working extensively with technologies such as JavaScript, TypeScript, React, C#, Python, and modern backend and cloud platforms,...Thank you for visiting my profile. I am an AI Developer with over ten years of professional experience in software engineering. I began my career as a Full Stack Web and Mobile Engineer, working extensively with technologies such as JavaScript, TypeScript, React, C#, Python, and modern backend and cloud platforms, and I have successfully delivered scalable web and mobile applications across industries including business, education, e-commerce, and enterprise environments. In recent years, my professional focus has shifted fully toward the artificial intelligence field, where I have built strong, hands-on expertise designing and deploying production-ready AI solutions. I specialize in developing AI-powered systems such as intelligent chatbots, AI agents, and virtual assistants using GPT and modern large language models. My experience includes advanced prompt engineering, fine-tuning and training machine learning models, retrieval-augmented generation (RAG), vector databases, embeddings, semantic search, and contextual memory systems. I design and implement end-to-end AI workflows using frameworks such as LangChain, integrating AI capabilities seamlessly into real-world products and business processes. I also develop AI-driven automation systems, including intelligent bots and workflows for platforms such as WhatsApp, Slack, and Telegram, as well as scalable business automation solutions using tools like n8n and Zapier to improve efficiency and customer engagement. My background as a full-stack engineer allows me to build AI solutions that are not only intelligent but also reliable, secure, and scalable. I am highly experienced in deploying AI systems to cloud environments such as AWS, Google Cloud Platform, and Firebase, and in integrating AI services into web and mobile applications. In addition, I work with AI-enhanced Web3 and blockchain solutions, including smart contracts, decentralized applications, AI-assisted trading bots, and automation within Ethereum, EVM-based ecosystems, and Solana. I am committed to delivering high-quality AI solutions with clear communication, timely delivery, and long-term technical support. If you are looking for an AI developer with a strong engineering foundation and proven AI expertise, please feel free to send me a private message to discuss your project. less
