I will build secure spring boot rest API with jwt oauth2 and jpa

S
smonir
S
smonir
Manirul
5.0
5.0
build secure spring boot rest API with jwt oauth2 and jpa
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build secure spring boot rest API with jwt oauth2 and jpa

About this gig

Senior Java Backend Engineer with 13+ years of experience building secure, scalable, and production-grade REST APIs for fintech, e-commerce, and enterprise platforms.


I develop clean and maintainable Spring Boot backend systems using industry best practices, scalable architecture, and strong security standards. My focus is building APIs that are secure, fast, reliable, and easy to maintain.

WHAT I DELIVER

- Spring Boot REST API (OpenAPI 3.0)

- JWT authentication with refresh tokens

- OAuth2 / Keycloak integration

- Role-Based Access Control (RBAC)

- JPA/Hibernate integration

- PostgreSQL / MySQL / MongoDB support

- Input validation & exception handling

- API rate limiting & security protection

- Swagger/OpenAPI documentation

- Postman collection for testing

- Unit & integration testing

- Clean code using SOLID principles


PERFECT FOR

- Mobile app backends

- Secure web applications

- Microservices projects

- Fintech & payment systems

- Legacy API modernization


EXPERIENCE

- APIs serving 100M+ users

- Payment APIs handling 100K+ daily transactions

- Enterprise OAuth2 implementation

- High-performance API optimisation

Contact me before ordering to discuss your project requirement

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • Java

  • Frontend framework

    • jQuery
    • Next.js
    • React.js

  • Backend framework

    • Spring
    • Other

Get to know Manirul

Manirul

Senior Java Spring Boot Engineer 13 plus years Microservices Kafka Payment

5.0(7)
  • FromBangladesh
  • Member sinceApr 2017
  • Last delivery11 months

  • Languages

    English
✅ About Me I’m a Senior Java Backend Engineer with 13+ years of professional experience specializing in Java, Spring Boot, and scalable backend systems. I design and implement microservices, REST APIs, and secure architecture for fintech, e-commerce, and enterprise-grade platforms. I have hands-on experience in event-driven design (Kafka), high-performance caching (Redis), NoSQL integration (MongoDB), and modern DevOps practices (CI/CD, Docker, Kubernetes) to ensure seamless deployment and scalability.
Reviews

2 reviews for this Gig
5.0

(2)
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(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
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    nybbleltd

    Repeat Client

    GB

    United Kingdom

    5

    Good work as usual

    Up to $50

    Price

    2 days

    Duration

    Helpful?
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  • A
    image-docs

    adamelmardi

    Repeat Client

    FR

    France

    5

    Un plaisir de travailler avec Monir, il est sérieux et réactif compétant. Je vous le recommande.

    Helpful?
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Reviews

2 reviews for this Gig
5.0

(2)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • N

    nybbleltd

    Repeat Client

    GB

    United Kingdom

    5

    Good work as usual

    Up to $50

    Price

    2 days

    Duration

    Helpful?
    Yes
    No
  • A
    image-docs

    adamelmardi

    Repeat Client

    FR

    France

    5

    Un plaisir de travailler avec Monir, il est sérieux et réactif compétant. Je vous le recommande.

    Helpful?
    Yes
    No

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