Atul A.

Hi there! If you're looking for a reliable developer who can turn complex ideas into scalable software, I’d be happy to help. I’m a software entrepreneur and full-stack engineer with 20+ years of experience, based in Kolkata, India, specializing in building high-performance applications, cloud platforms, and scalable systems for startups and innovation-driven companies. Over the years, I’ve worked as an extended engineering partner for multiple startups, helping them transform early-stage ideas into production-ready products and successful businesses. My experience spans diverse industries including Mobile Communications (VoLTE/IMS), Oil & Gas, Big Data & AI, and VLSI Design Automation. I understand the realities of startup environments — rapid iteration, evolving requirements, and the need for scalable architecture from day one. My goal is always to deliver clean, reliable, and future-ready solutions. What I Bring : ✔ 20+ years of hands-on software engineering experience ✔ Strong expertise in full-stack development and cloud solutions ✔ Proven experience supporting startups as a long-term engineering partner ✔ Focus on performance, scalability, and maintainable architecture Technical Skills & Expertise: Frontend Development--- React.js • Next.js • Angular • React Native • TypeScript • Flutter HTML5 • CSS3 • Bootstrap • JavaScript • jQuery Backend Development--- Node.js • Express.js • Java • Python • PHP • Ruby ASP.NET • .NET Core • Spring Boot • NestJS • Django • FastAPI • Flask Cloud & DevOps--- AWS • Microsoft Azure • Cloud Architecture • Scalable Backend Systems APIs & Payment Integrations--- REST API Design & Development Stripe • Razorpay • PayPal • CCAvenue • Paytm Databases--- MySQL • PostgreSQL • MongoDB • Cassandra • Neo4j Oracle • SQL Server • Kinetica AI & Intelligent Systems--- LLM Integrations • Prompt Engineering • Data Pipelines • Intelligent Backend Automation Development Methodologies--- Agile Development • Scrum • Kanban • Rapid MVP Development Version Control & Collaboration--- Git • GitHub • GitLab • Bitbucket • SVN Jira • Slack • Trello I also work extensively with AI and LLM integrations, including prompt engineering, structured data pipelines, and intelligent backend automation. Additional Experience--- • VoLTE / IMS / WebRTC communication systems • Mobile & wearable application development • Embedded systems & smart grid solutions • Data analytics & internet acceleration platforms • RFID / barcode systems • Full-stack enterprise web applications Currently, I’m also involved in building “Defender”, a specialized software product designed for military intelligence and law enforcement applications. If you need a dependable senior developer who can design, build, and scale your product — let’s connect. I’d be glad to learn more about your project and discuss how I can help deliver a robust, production-ready solution. Let’s connect and bring your vision to life.