I will develop java spring boot backend and rest api services

S
seifullayanikov
S
seifullayanikov
Seifulla Y
develop java spring boot backend and rest api services
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develop java spring boot backend and rest api services
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develop java spring boot backend and rest api servicesdevelop java spring boot backend and rest api servicesdevelop java spring boot backend and rest api services

About this gig

I'm a backend developer specializing in Java and Spring Boot, with hands-on experience building secure, production-ready REST APIs and backend systems.


During internships at SiPay (fintech payments) and SEBIT, I worked on live backend systems improving logging, security, and reliability in real production environments.


I've also independently built complete backend systems, including:

An event-driven microservices backend (Spring Boot, RabbitMQ, Redis, PostgreSQL)

A secure exam-monitoring API with JWT authentication and role-based access control

Unit and integration testing with JUnit and Mockito


What I can help you with:

- REST API design & development

- Spring Boot backend systems

- Database integration (PostgreSQL, MySQL)

- JWT authentication & security

- Bug fixes & debugging

- Unit/integration testing


I write clean, well-documented code and communicate clearly throughout the project you'll always know where things stand. Let's build something reliable together!

  • Programming language

    • Java

  • Expertise

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

  • Frontend framework

    • Angular

  • Backend framework

    • ASP.NET Core
    • Spring Boot

  • AI & low/no code builders

    • Claude
    • Cursor

Get to know Seifulla Y

Seifulla Y

Backend Software Developer

  • FromUkraine
  • Member sinceAug 2022
  • Avg. response time1 hour

  • Languages

    English, Russian, Ukrainian, Turkish
I am a Backend Software Developer with hands-on experience in Java Spring Boot, ASP.NET Core, and Python ML pipelines. I have a proven ability to deliver secure, production-ready APIs and AI-integrated systems. I possess a strong foundation in computer vision and RESTful architecture, complemented by my multilingual skills.

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