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Sumanth KokkilagaddaSK

Sumanth Kokkilagadda

Java Backend Developer

€400/day
Essen, DE
3-7 years

Average response time: 1 hour

About Sumanth

Hi! I'm Sumanth Kokkilagadda, a passionate and reliable backend developer with 5+ years of hands-on experience in building scalable, secure, and high-performance backend systems.

I specialize in:

  • Java & Spring Boot development
  • REST API design and integration
  • Microservices architecture
  • Database design (PostgreSQL, MySQL)
  • CI/CD pipeline setup (Jenkins, GitLab CI)
  • Cloud & containerization basics (AWS, Docker, Kubernetes - beginner level)
  • Agile development practices (Scrum, TDD, Pair Programming)
I’ve worked in retail and banking domain, where I’ve led backend feature development, modernized legacy applications, and improved DevOps pipelines. I'm proactive, detail-oriented, and love solving real-world problems through clean and maintainable code.

Whether you need to build a new backend service, fix existing issues, migrate to microservices, or improve performance. I’m here to help. Let’s bring your idea to life!

  • English

    Native or bilingual

  • German

    Basic

  • Telugu

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Infosys Ltd
    Java BackEnd Developer
    October 2024 - April 2025 (6 months)
    Chennai, Tamil Nadu, India
    • Led the upgrade of backend services to Java 21 and Spring Boot 3.4 improving system stability and maintainability across multiple business-critical modules.
    • Developed backend services for a credit decisioning platform used by banking employees, optimizing APIs to reduce response time by 30%.
    • Resolved 25+ critical security vulnerabilities across backend services, reducing backlog by 70% and improving application security posture.
  • Tata Consultancy Services
    Junior Java BackEnd Developer
    October 2020 - September 2024 (3 years and 11 months)
    Chennai, Tamil Nadu, India
    • Designed and developed RESTful APIs for a retail e-commerce platform used across 6 countries, enhancing service performance and reducing average response time by 30%.
    • Optimized complex SQL queries in PostgreSQL-based services, improving data retrieval speed by 30% and reducing DB load during peak usage.
    • Participated in Agile ceremonies (sprint planning, reviews, retrospectives) and Reviewed 60+ pull requests, ensuring adherence to clean code and architectural standards.
    • Delivered backend features from planning to production, contributing to architectural decisions.
    • Led the migration of CI/CD pipelines from Jenkins to GitLab, cutting deployment and build times by 70% and improving release stability by 90%.

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Education

  • Bachelor of Technology (BTech)
    National Institute of Technology Calicut
    2020
    Bachelor of Technology (BTech)
  • Master Microservices with Spring Boot & Spring Cloud
    Udemy
    2025
    Master Microservices with Spring Boot & Spring Cloud

Skill set

Categories