Hire the Best REST API Developers

🚀 Top Rated Plus | 9+ Years Experience | 7700+ Hours | 100% Job Success Hi, I'm Gopal, a Senior Full-Stack Web Developer & AI Application Specialist with over 9 years of experience delivering secure, scalable, and high-performance applications. I specialize in end-to-end development, from clean and responsive user interfaces to powerful backend systems. I also built and productionised AI platforms similar to Lovable, ChatGPT, and Base44, including private deployments, API integrations, and automation workflows. Whether you need a SaaS platform, an AI chatbot, a business automation system, an eCommerce solution, or a Base44 app rebuilt outside the platform, I deliver solutions that are reliable, maintainable, and built to scale. 🧠 AI & Automation ✅ Lovable-style AI apps ✅ ChatGPT-like conversational systems ✅ Base44 app duplication & migration ✅ AI agents & workflow automation ✅ API-driven AI integrations 🧱 Backend & Frameworks ✅ Laravel / Filament ✅ CodeIgniter ✅ WordPress (Custom Themes & Plugins) ✅ CakePHP 🎨 Frontend & Realtime ✅ ReactJS ✅ VueJS ✅ JavaScript (ES6+) ✅ jQuery / AJAX ✅ WebSockets 🗄️ Databases & APIs ✅ REST API development & integration ✅ MySQL ✅ MongoDB 🌐 Web & Design ✅ HTML / HTML5 ✅ CSS / Bootstrap ✅ Social media integrations ✅ Photoshop I communicate clearly in spoken and written English and am known for being proactive, reliable, and deadline-driven. Client satisfaction comes from clean code, transparency, and consistent delivery.

I’m a Back-End Developer specializing in Django, Django REST Framework, PostgreSQL, and MySQL, with strong experience building secure, scalable, and well-structured APIs for real-world applications. I focus on writing clean, maintainable code, designing efficient database systems, and delivering reliable backend logic that supports smooth, high-performance user experiences. Alongside backend development, I bring solid skills in Machine Learning and Data Analytics, using tools like Pandas, NumPy, scikit-learn, TensorFlow, and Power BI to build predictive models, automate workflows, and create data-driven dashboards. This allows me to support clients who need both robust backend systems and intelligent, analytics-powered features. I have successfully completed projects with 100% Job Success, demonstrating strong communication, consistent delivery, and high-quality results. I always ensure clear documentation, proper API testing, and smooth integrations for frontend developers. #. What I Can Do for You Build and document REST APIs (JWT Authentication, CRUD, filtering, pagination) Design and optimize relational databases (PostgreSQL, MySQL) Deploy backend systems using Docker, Linux, GitHub, and cloud services Integrate Celery + Redis for background jobs and async tasks Develop ML models for prediction, classification, and automation Create interactive dashboards and data visualizations Troubleshoot, refactor, and scale existing backend systems

Need a backend that scales, a frontend that’s blazing fast, responsive, and production-ready, APIs that work seamlessly, and workflows on autopilot? That’s what I deliver. As a Senior Full Stack Developer (6+ years), I help businesses scale faster, cut inefficiencies, and launch reliable products by building robust APIs, secure databases, and automation-ready systems. Recent Project: Mavericks Motors (SaaS MVP) When Mavericks Motors was at risk of missing a critical launch due to delays and poor execution from previous developers, we stepped in and turned things around. In just 1.5 months, I delivered a polished, scalable MVP that allowed the founder to launch on time, restore investor confidence, and avoid reputational loss. Beyond meeting the deadline, the solution gave the business: a. Investor-ready scalability with a solid backend and AWS deployment b. Enhanced customer engagement through four intelligent chatbots (Buy, Finance, Sell, Generic c.Assistant) that delivered real-time, semantic search–driven support d. Future-proof AI capabilities, positioning Mavericks Motors as an innovative, tech-forward company in its space The real outcome: instead of a missed opportunity, Mavericks Motors launched successfully, impressed investors, and gained a foundation to scale confidently. Tech Stack & Skills: a. Languages: JavaScript (ES6+), TypeScript, Python, Dart, SQL, NoSQL Backend Frameworks & Libraries Node.js, Nest.js, Express.js, Django, Flask, FastAPI, GraphQL (Apollo, Hasura) b. Databases: PostgreSQL, MySQL, AWS RDS, Supabase MongoDB, Firebase, Redis Vector DBs: Pinecone, Weaviate, pgvector c. APIs & Integrations: REST, GraphQL, WebSockets Stripe, PayPal, Google Maps, Twilio, Slack, HubSpot, Telegram, WhatsApp, Zapier OpenAI, ElevenLabs d. AI, Automation & ML n8n (workflow automation), LangChain (RAG pipelines, LLM apps) Chatbots (custom assistants for Buy/Finance/Sell/Support) Semantic Search: TypeSense, Pinecone, Weaviate, pgvector ML/AI: Pandas, NumPy, TensorFlow, Scikit-learn, PyTorch Dialogflow, Rasa, Voiceflow e. Cloud & DevOps AWS (EC2, S3, Lambda, CloudFront, RDS, DynamoDB, Amplify) GCP, Firebase, Supabase Docker, Kubernetes (basics), CI/CD (GitHub Actions, GitLab CI) Railway, Vercel, Serverless & Microservices Frontend (Supporting Skills) React.js, Next.js, Vue.js, Flutter, React Native, Tailwind CSS With 6+ years of backend expertise, I’ve delivered SaaS platforms, MVPs, real-time applications, and migration projects for clients worldwide. I specialize in helping businesses in B2B, FinTech, eCommerce, AI, and SaaS scale with reliable backend systems. Let’s connect and discuss how I can bring the same value to your project, delivering not just code, but real business impact.

I've built production systems serving 100,000+ users and currently lead engineering as CTO of a SaaS platform — so I bring senior-level architecture, not just code. Need a backend or full-stack engineer who ships fast without breaking what already works? I build production NestJS/Node.js APIs, Next.js web apps, and tricky third-party integrations (Stripe, GoHighLevel, Phorest, Zapier, PayFast) that other developers got stuck on. Hi 👋 I'm Rafique — a Top Rated AI-Native Full Stack Engineer with 100% Job Success on Upwork. I have 5+ years of experience building backend services, REST APIs, and SaaS platforms for startups and growing teams. Most of my work falls into one of three buckets: shipping new MVPs quickly, fixing and scaling existing apps, or building the integration layer that connects your product to the tools your business actually runs on. My core stack: 🔧 Backend: Node.js, NestJS, TypeScript, REST APIs, PostgreSQL, MongoDB, Prisma 🎨 Frontend: Next.js, React, TypeScript ☁️ Infra & Tools: AWS (Lambda, Cognito), Vercel, GitHub 🧠 AI-Native Workflow: Claude, Codex, and Cursor — used where they reduce bugs and ship faster, not as a replacement for clean architecture What clients hire me for: ✅ NestJS + Node.js backends with secure authentication and clean REST APIs ✅ Stripe, GoHighLevel, Phorest, PayFast, and Zapier integrations ✅ Next.js full-stack apps (auth, dashboards, SaaS MVPs) ✅ Performance, migrations, and stabilizing existing codebases ✅ Clear estimates, proactive updates, no surprises Recent client feedback: ⭐ "Rafique ROCKS — something I was trying to do on my own for hours and hours, he just did it." — Phorest → GoHighLevel integration ⭐ "Best developer to work with — extremely technical, patient, good communication, and most importantly knows his code. Definitely gonna hire again." — PayFast / Next.js integration ⭐ "He delivered high-quality authentication features, communicated clearly, and was very patient and professional." — NextJS + NestJS auth setup Send me a short message about what you're building or what's broken. I'll reply within 4 hours with a clear plan, realistic timeline, and an honest answer on whether I'm the right fit — no fluff, no sales pitch.

👑𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 | 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I am an expert Full Stack Developer with over 12 years of experience in building scalable, high-performance web and mobile applications. With a deep understanding of modern frameworks and technologies such as Node.js, Python, and FastAPI, I have consistently delivered innovative solutions to complex challenges, working across the full stack to build end-to-end solutions. As a top 1% Expert-Vetted Talent, I’ve been pre-screened by industry professionals and talent managers to ensure I meet the highest standards of technical expertise and quality. Throughout my career, I’ve had the privilege of working in dynamic, high-impact roles at some of the most renowned tech companies, where I gained extensive experience in leading engineering teams and architecting advanced systems. 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 1- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 Spearheaded large-scale, cloud-based software systems that supported Microsoft’s enterprise solutions, focusing on security, performance optimization, and user experience. Led cross-functional teams to implement key features for Microsoft Azure and Office 365. 2- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 Contributed to the core engineering teams responsible for Facebook’s backend services, handling millions of active users and optimizing real-time data processing. Played a pivotal role in building scalable APIs, improving system performance, and enhancing user experience. 𝟯- 𝗟𝗲𝗮𝗱 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗛𝗲𝗹𝗹𝗼𝗴𝗼𝘃 𝗔𝗜 Directed a team to build AI-powered government solutions, improving efficiency and accessibility for public services. Collaborated with stakeholders to design innovative features while ensuring system reliability and scalability. 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 1- Backend Development: Skilled in Node.js, Python, FastAPI, and Express.js for building scalable APIs and microservices. 2- Frontend Development: Experienced with React.js, Vue.js, and HTML/CSS for creating responsive web interfaces. 3- Mobile Development: Expertise in React Native and Flutter for cross-platform mobile app development. 4- Cloud & DevOps: Proficient in AWS, Azure, Google Cloud, Docker, Kubernetes, and CI/CD for scalable deployment. 5- Database Management: Strong in relational and NoSQL databases like PostgreSQL, MySQL, MongoDB, and Redis. 6- Agile & Leadership: Experienced in leading Agile teams, driving project success, and mentoring junior developers. 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I am comfortable working across a variety of time zones and can adapt to your team’s working hours, ensuring seamless collaboration no matter where you're based. Whether you need overlapping work hours or full-time availability, I am open to flexible arrangements that align with your team’s needs. 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆, 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I have a proven track record of building high-performance systems that scale efficiently, ensuring long-term stability and performance. I am committed to delivering robust solutions that meet business goals while optimizing user experience. 𝗙𝗮𝘀𝘁-𝗣𝗮𝗰𝗲𝗱 & 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: I thrive in fast-paced environments and understand the importance of meeting deadlines without compromising on quality. I take a results-driven approach to development, always focusing on delivering value quickly and effectively. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗧𝗲𝗮𝗺 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: Throughout my career, I’ve led multiple cross-functional teams, ensuring strong collaboration and clear communication at all stages of development. Whether working as a lead engineer or as part of a team, I take an active role in mentoring and guiding junior developers to achieve their full potential. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 & 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗟𝗲𝗮𝗿𝗻𝗲𝗿: I am passionate about staying ahead of the curve in an ever-evolving tech landscape. My curiosity drives me to constantly explore new tools, technologies, and techniques, so I can apply the best possible solutions to each project I undertake. 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿! With expertise in Full Stack Development, cloud solutions, and Agile, I offer flexible timezone availability and a commitment to delivering high-quality, scalable applications, ready to collaborate and drive results. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, Senior Software Engineer, Node.js, Python, FastAPI, React.js, Web Development, Mobile Development, Backend Development, Frontend Development, Full Stack Architecture, API Development, RESTful APIs, Microservices, Cloud Computing, AWS, Azure, Google Cloud, Docker, Kubernetes, CI/CD, Continuous Integration.

Hello, I’m Raj Narayan Gupta, a Full Stack Developer with more than five years of experience in designing and developing modern web applications. I build fast, secure, and scalable solutions using .NET technologies and cloud platforms like Azure and AWS. I have a strong command over C#, ASP.NET Core, Blazor, and React, and I enjoy working on both backend and frontend parts of a project. My approach focuses on writing clean, maintainable code, optimizing performance, and ensuring smooth deployment through modern DevOps practices. Core Skills and Expertise ASP.NET Core MVC, Razor Pages, Blazor Microservices, CQRS, Repository Pattern, SignalR, RabbitMQ RESTful API development and third-party integrations React.js, TypeScript, JavaScript (ES6+), and responsive UI design SQL Server, MySQL, Entity Framework Core Azure App Services, AWS Elastic Beanstalk, Dokploy, CloudPanel, S3, and CI/CD pipelines What I Can Help You With Building new web applications from the ground up Refactoring or upgrading existing .NET projects Designing and integrating REST APIs Implementing authentication and authorization (JWT, OAuth, Identity) Database design, optimization, and migration Fixing bugs, improving performance, and maintaining reliability Why Work With Me I have a solid understanding of .NET architecture and full-stack development, allowing me to deliver solutions that are both scalable and efficient. My work is guided by attention to detail, clear communication, and a focus on client satisfaction. I’m comfortable collaborating in agile environments and taking ownership of complete project lifecycles. If you’re looking for a developer who understands business goals as well as technology, I’d be happy to help you bring your project to life. Let’s discuss how we can work together to build something great.