About the Role : We're looking for a Mid-Level Backend Engineer to join our engineering team building and scaling a fully serverless platform. You'll work on Java-based services running on AWS Lambda, writing clean, performant, raw SQL against production databases, and integrating with third-party systems including Stripe for payments. This role suits someone who enjoys working close to the metal on cloud-native architecture without the overhead of managing servers or containers.

What You'll Do

- Design, build, and maintain backend services deployed entirely on AWS Lambda (no EC2, no containers)
- Write and optimize raw SQL queries using plain JDBC no ORM layer to lean on
- Work within serverless constraints: cold start mitigation, Lambda payload size limits, and concurrency management
- Integrate with and extend Stripe-based payment flows
- Collaborate with cross-functional teams (product, frontend, DevOps) to ship features end-to-end
- Participate in code reviews, design discussions, and troubleshooting production issues
- Write clean, well-tested, maintainable Java code
- Contribute to improving deployment pipelines and observability across serverless services

What We're Looking For





- 35 years of professional backend development experience, with strong Java fundamentals
- Hands-on experience with AWS Lambda and serverless architecture patterns
- Solid understanding of relational databases and comfort writing raw SQL via JDBC (no ORM crutch)
- Experience working within serverless constraints cold starts, payload limits, concurrency throttling
- Ability to debug and reason about distributed, event-driven systems
- Strong communication skills and comfort working in a team-oriented, fast-moving team

Nice to Know

- The platform is deployed entirely serverless (no EC2/containers) cold starts, payload size limits, and Lambda concurrency are real constraints you'll encounter
- Java services use plain JDBC with no ORM — raw SQL discipline is expected
- Stripe payment integration is part of the platform; prior exposure is a plus

Nice to Have

- Prior experience integrating with Stripe or similar payment gateways
- Familiarity with AWS services beyond Lambda (API Gateway, DynamoDB, SQS/SNS, CloudWatch)
- Experience with Infrastructure as Code (CDK, Terraform, or SAM)
- Exposure to CI/CD pipelines for serverless deployments

📌 Back End Engineer (Chennai)
🏢 Hubino Technologies
📍 Chennai