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Backend developer with 5 years of professional software engineering experience building APIs, backend services, distributed systems, and microservices. I work primarily with Java, Spring Boot, Python, REST APIs, PostgreSQL, and Apache Kafka, with experience developing production software and event-driven systems. I also build Unity (C#) projects focused on gameplay systems, simulation mechanics, and management-style games. This includes a published Unity simulation project, Cinema Rush. I can help with: * Backend development and REST APIs * Java / Spring Boot development * Python backend development * Microservices and event-driven systems * Bug fixing, debugging, and existing codebase improvements * Unity gameplay systems and technical game development I focus on clean, maintainable implementations, clear communication, and solving problems without unnecessary complexity.

I'm a full-stack developer with over 6 years of experience building fast, scalable web applications using technologies like React.js, and Next.js on the frontend, and Node.js, Express.js, Django, Flask, and FastAPI on the backend. My experience includes working with MongoDB, PostgreSQL, MySQL, and Firebase, along with deploying applications using tools like Docker/Kubernetes, GitHub, AWS, Vercel, and Heroku. I focus on writing clean, maintainable code and creating responsive, user-friendly interfaces that ensure high performance and reliability. 💻 Tech Stack I Use 🎨 Frontend ⚛️ React.js, Next.js 🎀 Tailwind CSS, Bootstrap, CSS 📱 Progressive Web Apps (PWA) 🛠️ Backend 🟢 Node.js, Express.js 🐍 Python (Flask, FastAPI) 🔌 REST APIs, GraphQL, microservices, authentication systems 🗄️ Databases & DevOps 🗃️ MongoDB, PostgreSQL, MySQL, Firebase ☁️ AWS, Vercel, Render, Heroku, Docker, Kubernetes, Terraform 🔧 Git & GitHub (team workflows, PRs, CI/CD integration) ✨ Additional Skills: → Payment Gateway Integrations: Seamless integration of various payment systems. → Messaging Protocols: MQTT & AMQP for real-time communication. → Caching: Redis for enhancing application performance. 🔹 My Development Process 1️⃣ Discovery Call – 💬 Understand your vision & requirements 2️⃣ Project Planning – 📅 Define timelines & milestones 3️⃣ Design & Development – 🎨 Regular updates & live previews 4️⃣ Testing & Launch – ✅ QA testing & smooth deployment 5️⃣ Ongoing Support – 🔄 30 days of free maintenance included 🚀 Ready to Start Your Project? Let's discuss how I can help transform your ideas into reality. I offer FREE consultation calls to understand your needs and provide a detailed project roadmap.

🏆 Skilled Golang Developer | 7+ Years Backend Expertise Building 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 with Golang for startups and enterprises. Need a 𝐟𝐚𝐬𝐭, 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞 𝐀𝐏𝐈, 𝐦𝐢𝐜𝐫𝐨𝐬𝐞𝐫𝐯𝐢𝐜𝐞, 𝐨𝐫 𝐫𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐬𝐲𝐬𝐭𝐞𝐦? Let’s talk. 🛠️ 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ------------------------- ✔ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 – React, Vue, Angular, HTML/CSS/JS ✔ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 – APIs, microservices, server-side logic ✔ 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 – Chat, gaming backends, financial platforms ✔ 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 – AWS/GCP/Azure, Docker, Kubernetes ✔ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 – PostgreSQL, MySQL, MongoDB, Redis ✔ 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐮𝐧𝐢𝐧𝐠 – Leveraging Go’s concurrency for speed 🔧 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: -------------------- 🔷 𝐆𝐨𝐥𝐚𝐧𝐠 (Concurrency, Goroutines, Channels) 🔷 𝐀𝐏𝐈𝐬 (REST, GraphQL, gRPC) 🔷 𝐂𝐥𝐨𝐮𝐝 (AWS Lambda, GCP Functions, Serverless) 🔷 𝐂𝐈/𝐂𝐃 (GitHub Actions, Jenkins, GitLab CI) 🔷 𝐈𝐧𝐟𝐫𝐚 (Docker, Kubernetes, Terraform) 🏭 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐒𝐞𝐫𝐯𝐞𝐝: ---------------------------- ● FinTech & Payments ● E-commerce & Retail ● SaaS & Cloud Apps ● Gaming & Esports 👉 Click "𝐈𝐧𝐯𝐢𝐭𝐞" or 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 for Golang expertise - I'll help architect your perfect backend solution! #golang #backend #microservices #apidevelopment #cloud #devops #golangdeveloper

🥇Top Rated | 💯 100% Job Success | ⭐⭐⭐⭐⭐ 5-Star Reviews I help startups and growing businesses build scalable, high-performance web applications and backend systems that are reliable, fast, and built to scale. I’m a 🥇Top Rated Full Stack Developer on Upwork with 8+ years of experience, specializing in Node.js, React, and cloud-based architecture (AWS) - working on APIs, microservices, full-stack platforms, and data-heavy systems. I’m also associated with a 🥇Top Rated Plus US-based agency - G2CPartners, LLC, where we’ve delivered high-quality solutions across multiple industries, focused on performance, scalability, and real business outcomes. Proven Results: ✔ Migrated 500M+ records (Salesforce → PostgreSQL) with zero data loss ✔ Reduced deployment time by 80% using CI/CD pipelines ✔ Improved application performance by 40% (faster load times) ✔ Built scalable systems using Kafka, RabbitMQ, Kubernetes ✔ Delivered solutions that consistently receive 5-star client reviews What I can help you with: ✅ Backend development (Node.js, NestJS, Express, APIs, microservices) ✅ Full-stack development (React, TypeScript, modern UI) ✅ Cloud architecture (AWS, Docker, Kubernetes) ✅ Data pipelines, ETL workflows, and migrations ✅ Performance optimization and system scaling ✅ Database design (PostgreSQL, MongoDB, Redis) ✅ Web3 / Blockchain integrations (Solidity, Web3.js) My approach: Clean, scalable, production-ready code Strong focus on performance & system architecture Clear communication and fast turnaround Reliable long-term support (not just quick fixes) If you’re looking for someone who can build, optimize, and scale your product end-to-end, I’d be happy to help. 🔧 Core Expertise: Node.js Developer | React Developer | Full Stack Developer | Backend Developer | JavaScript Developer | TypeScript Developer | API Developer | REST API | GraphQL | Microservices | AWS Developer | Cloud Engineer | Docker | Kubernetes | CI/CD | DevOps | PostgreSQL | MongoDB | Redis | Kafka | RabbitMQ | Elasticsearch | System Design | Scalable Applications | SaaS Development | Web Application Development | ETL Pipelines | Data Migration | Performance Optimization | Web3 Developer | Solidity | Blockchain Developer

✅ Solution Architect | Full-Stack | DevOps | Cloud | AI/ML | LLM Apps | IoT Hi, I’m Niladri — a Solution Architect and Full-Stack Developer with 15+ years of experience helping startups, SaaS companies, and enterprises design, build, automate, and scale secure, production-ready software systems. Clients hire me when they need more than a coder. They need someone who can understand the business goal, design the right architecture, build the product, automate infrastructure, integrate AI where it adds value, and keep the system scalable, maintainable, and cost-efficient. I can work as a senior engineer, architect, DevOps consultant, technical lead, or long-term technology partner. 📊 Skill Ratings DevOps & Cloud Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Solution Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Backend & API Engineering – ▓▓▓▓▓▓▓▓▓░ 9/10 AI/ML & LLM Integration – ▓▓▓▓▓▓▓▓░░ 8/10 IoT & Embedded Electronics – ▓▓▓▓▓▓▓▓░░ 8/10 Frontend Development – ▓▓▓▓▓▓▓░░░ 7/10 Mobile App Development – ▓▓▓▓▓▓▓░░░ 7/10 🚀 What I Can Help You With ☁️ Cloud, DevOps & Platform Engineering I design and deploy cloud-native infrastructure using AWS, Google Cloud, Azure, DigitalOcean, Heroku, and hybrid/on-premise systems. AWS: EC2, S3, RDS, Lambda, ECS, EKS, Fargate, DynamoDB, CloudFront, Route 53 GCP: Cloud Run, GKE, Firebase, Cloud SQL, BigQuery, Pub/Sub, AI APIs Azure: Functions, App Services, PostgreSQL, DevOps, cloud migration Core DevOps: Docker, Kubernetes, Helm, Terraform, CI/CD, GitHub Actions, GitLab, Jenkins, Bitbucket Pipelines, monitoring, backups, security hardening, high availability, and cost optimization. 🤖 AI/ML, LLM Apps & Automation I help businesses integrate AI into real products and workflows: LLM applications, OpenAI/AWS AI/Google AI integrations, RAG knowledge-base systems, AI chatbots, document processing, vector search with PostgreSQL/pgvector, recommendation engines, predictive analytics, and workflow automation. My focus is not just adding AI features — I design AI systems that are useful, secure, measurable, and practical. 💻 Full-Stack Web Development I build scalable web applications with clean architecture and maintainable code. Backend: Node.js, NestJS, Express, TypeScript, Python, Django, Flask, FastAPI, Java/Spring Boot Frontend: React.js, Next.js, Vue.js, Angular, admin dashboards, SaaS portals Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, MariaDB, MS SQL I focus on API performance, database design, authentication, authorization, security, testing, and maintainability. 🔗 API Development & SaaS Integrations I build APIs, webhooks, integration layers, and event-driven systems. Experience includes Amazon MWS/SP API/Ads API, QuickBooks Online/Desktop, Xero, FreshBooks, HubSpot, Salesforce, Zoho, Zendesk, Stripe, Twilio, Slack, Asana, REST, GraphQL, Webhooks, Microservices, and Event-driven Architecture. 📱 Mobile App Development React Native, Flutter, and PWAs with real-time chat, push notifications, payments, GPS tracking, offline sync, dashboards, and cloud backend integration. 🌐 IoT & Embedded Systems Embedded Linux, Buildroot, Arduino, ESP, Raspberry Pi, RTOS, FPGA, Petalinux, RFSoC, ZCU111, XRF8, I2C, SPI, UART, TCP, MQTT, sensor integration, and firmware-to-cloud-to-dashboard platforms. 🧠 Technical Leadership I support teams with architecture, cloud review, code/PR review, CI/CD setup, security planning, database/API design, bottleneck resolution, team grooming, scalability planning, and engineering best practices. 🌟 Why Clients Hire Me ✔️ 15+ years of hands-on software, cloud, DevOps, AI, and IoT experience ✔️ Strong mix of architecture, development, automation, and technical leadership ✔️ Ability to work independently or lead a technical team ✔️ Experience with SaaS, fintech, e-commerce, AI, cloud, API integrations, and IoT systems ✔️ Practical mindset: I design systems that can be built, deployed, scaled, and supported ✔️ Strong focus on clean code, security, documentation, automation, and maintainability I don’t just deliver code — I help you build a reliable product, scalable platform, and stronger technical foundation. ⭐ Client Feedback “Nil headed up a full backend solution including RESTful API and AWS cloud setup. He is knowledgeable, understands your needs, and delivers creative, high-quality solutions.” — Douglas Stirling “Nil is an excellent developer — quick to grasp requirements, easy to communicate with, and always delivers well-tested, first-class work.” — Sat Sindhar “Niladri is a highly experienced full-stack programmer with thorough knowledge across technologies. I am extremely satisfied with his services.” — Vishal Agarwal “Niladri is the best at what he does. Very easy to communicate with, delivers flawless work, and provides great support after the job is done.” — Muzaffer Selimbeyoglu 📌 Background Degree in Computer Science CCNA | RHCE Diploma in Computer Hardware & Electronics GitHub Portfolio: fuzonmedia

I’m a Senior Node.js Backend Engineer (7+ years) specializing in building scalable, production-grade systems for startups and enterprise clients. I don’t just write code—I design high-performance backend architectures, microservices, and cloud-native solutions that handle real-world scale and complexity. My expertise includes Node.js, Express/NestJS, AWS (Lambda, SQS), Google Cloud Functions, and databases like MySQL and MongoDB. I’ve led backend development for critical applications in domains like healthcare and real-time systems, where performance, reliability, and clean architecture are non-negotiable. What sets me apart: Strong focus on scalability, performance, and system design Ability to debug and stabilize complex production systems Experience leading teams and delivering end-to-end solutions Clean, maintainable code with testing (Jest) and CI/CD practices If you're looking for someone who can own your backend, make it scalable, and deliver without hand-holding, I’m the right fit.