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I will build secure, scalable spring boot rest apis
Chengalappan S
5.0
5.0
About this gig
Are you looking for a reliable Java backend & REST API developer?
I am a Software Engineer with 3.8 years of experience building real-world, high-performance backend systems for FinTech and stock trading platforms handling millions of records and real-time analytics.
What I offer:
- Spring Boot REST API Development
- Database Integration (PostgreSQL / MySQL)
- ClickHouse & TimescaleDB Setup
- Slow Query Optimization & Tuning
- Database Migration
- Kafka-based Real-Time Data Pipelines
- Secure Authentication (OAuth 2.0 / JWT)
Why work with me:
I've built production systems handling real-time market data pipelines, payment gateways, and SSO authentication services in the fintech domain so I understand both performance and security requirements for backend systems that can't afford downtime or data loss.
Let's discuss your project message me with your requirements, and I'll get back to you promptly.
Get to know Chengalappan S
Chengalappan S
Software Engineer
- FromIndia
- Member sinceOct 2022
- Last delivery3 months
Languages
English, Tamil
Backend Engineer | Java, Spring Boot & Real-Time Systems
I build scalable, production-ready backend applications with 3+ years of professional fintech experience — real industry work, not just the simple demo projects that you will find elsewhere.
✅ Spring Boot REST API Development
✅ PostgreSQL & TimescaleDB (Time-Series) Design
✅ Hibernate & JPA Integration
✅ Apache Kafka & Real-Time Data Pipelines
✅ Bug Fixing, Code Review & Performance Optimization
✅ Maven Build Configuration
Clean code, clear communication, and on-time delivery every time.
📩 Message me before ordering!
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FAQ
What information do you need from me to get started?
Please share your project details or requirements doc, existing codebase (if any), preferred database (PostgreSQL/MySQL), and any API specs or endpoints you need. If you're unsure, I'll ask clarifying questions after you place the order.
Do you provide API documentation with the delivery?
Yes, I provide clear documentation covering endpoints, request/response formats, and setup instructions so you can integrate or hand off the project easily.
Can you deploy the API for me, or do I need to deploy it myself?
I can deploy it for you on request (as an add-on), or hand off deployment-ready code with setup instructions if you prefer to deploy it yourself.
Reviews
1 reviews for this Gig
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S sonygeorge
India
He delivered an excellent experience, demonstrating true expertise in completing this project. He handled everything with the utmost professionalism, providing clear documentation, an excellent README, and a comprehensive step-by-step guide. Furthermore, the code quality was of the highest standard and truly exceeded my expectations
$50
Price
1 day
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S sonygeorge
India
He delivered an excellent experience, demonstrating true expertise in completing this project. He handled everything with the utmost professionalism, providing clear documentation, an excellent README, and a comprehensive step-by-step guide. Furthermore, the code quality was of the highest standard and truly exceeded my expectations
$50
Price
1 day
Duration
Helpful?
