I will develop java spring boot rest apis and microservices for your backend

Z
zahidhasansahin
Z
zahidhasansahin
Zahid Hasan
develop java spring boot rest apis and microservices for your backend
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develop java spring boot rest apis and microservices for your backend

About this gig

Need a rock-solid Java Spring Boot backend? You're in the right place.

I'm Zahid a Software Engineer II with 3+ years building production microservices for enterprise financial clients. I've architected systems processing thousands of daily transactions, reduced API response times from 2 minutes to 20ms, and implemented secure, scalable backends that real businesses rely on.


What I can build for you:

Spring Boot REST APIs (CRUD, complex business logic, paginated responses)

Microservices with service discovery and API gateway

Event-driven systems with Kafka or RabbitMQ

Database design and optimization (MS SQL, MySQL, MongoDB)

JWT / OAuth2 / Keycloak authentication & authorization

Docker containerization and deployment-ready code

Clean architecture: DTO, Repository, Service, Controller layers

Comprehensive unit tests with 80%+ coverage


My tech stack:

Java 17+, Spring Boot, Spring Security, Spring Data JPA, Hibernate, MS SQL, MySQL, Redis, Kafka, Docker, Maven, Git


Every delivery includes:

Full source code (clean, commented)

API documentation

Postman collection

README with setup guide

Post-delivery support

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Localization
    • Performance
    • Databases

  • Frontend framework

    • Angular
    • Bootstrap
    • jQuery

  • Backend framework

    • Spring

Get to know Zahid Hasan

Zahid Hasan

Java Spring Boot and Microservices Developer ! Fintech Backend Expert

5.0(1)
  • FromBangladesh
  • Member sinceJul 2024
  • Avg. response time1 hour
  • Last delivery1 year

  • Languages

    Bengali, English, Hindi
I'm Zahid Hasan, a Software Engineer II with 3+ years of professional experience building enterprise-grade Java Spring Boot and microservices systems. I specialize in REST API development, microservices architecture, event-driven systems (Kafka, RabbitMQ), and enterprise security (Keycloak, SSO, RBAC). I'vedelivered financial platforms processing thousands of real-time transactions daily. Beyond work, I'm a LeetCode Knight (Rating 1894, BD Rank #1) and Codeforces Specialist—meaning I solve hard problems fast, by nature. 📩 Message me before ordering so we can discuss your exact requirements

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