Java 21 & Spring Boot Backend Engineer | 2 Live AWS Production Systems | REST APIs, Video Streaming, Payment Integration
I'm a backend engineer specializing in Java 21, Spring Boot, and AWS β and I don't just write code, I ship production systems that real users are actively using.
In the past year, I've independently built and deployed two live client projects from scratch:
πΉ MakeSenseEdu (EdTech SaaS) β Full backend with course management, HLS adaptive video streaming (360p/720p/1080p), and a serverless video transcoding pipeline using AWS Lambda + FFmpeg. Integrated Razorpay payments with HMAC SHA256 webhook verification and idempotency to prevent duplicate failures. Deployed on full AWS infrastructure (EC2, RDS, S3, CloudFront, ALB, ECR, Route 53) under $60/month.
πΉ Hotel Kalsubai Camping (Booking System) β Spring Boot backend with JWT authentication, admin CMS, and fully automated CI/CD via GitHub Actions β Docker β ECR β EC2.
Both systems: zero senior guidance. Just clean architecture, AWS docs, and shipping.
What I bring to your project:
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Java 21 + Spring Boot β REST APIs, Spring Security (JWT, OAuth2, 2FA), Hibernate/JPA
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AWS β EC2, RDS, S3, Lambda, CloudFront, ALB, ECR, Route 53
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CI/CD β GitHub Actions + Docker, zero-downtime deployments
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Payment Integration β Razorpay with webhook security
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Async Systems β Java 21 Virtual Threads, StructuredTaskScope
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Full SDLC ownership β architecture β development β production
I communicate clearly, deliver on time, and take full ownership of what I build. If you need a reliable backend engineer who treats your project like their own β let's talk.
Work Terms
π Availability: Full-time freelance. Available MonβSat, 9 AM β 9 PM IST (UTC+5:30). Can adjust hours for US/EU clients for overlap calls.
π¬ Communication: Prefer async messaging for day-to-day updates. Weekly video calls available for project sync. I give daily progress updates on active projects β no ghosting, no surprises.
π° Payment Terms: Milestone-based billing preferred for longer projects. Fixed-price for well-scoped work, hourly for ongoing/maintenance. 50% upfront for new clients on fixed-price projects.
π¦ What I deliver: Clean, documented code (Swagger/OpenAPI), Postman collections, deployment-ready Docker + CI/CD setup, and a handoff document so you're never stuck after the project ends.
π Revisions: Reasonable change requests within agreed scope are included. Out-of-scope additions are estimated transparently before starting.
β‘ Typical turnaround: 3β5 days for APIs/features, 1β2 weeks for full backend systems depending on complexity.
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