I will build and fix backend systems with kotlin spring boot go

J
jin_kotlin_dev
J
jin_kotlin_dev
chengjin
build and fix backend systems with kotlin spring boot go
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build and fix backend systems with kotlin spring boot go
Full Screen
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build and fix backend systems with kotlin spring boot gobuild and fix backend systems with kotlin spring boot gobuild and fix backend systems with kotlin spring boot go

About this gig

Senior Kotlin & Spring Boot Go backend dev. Fix bugs in 24h, build clean REST APIs, tune PostgreSQL performance. Fast replies, clear updates, 100% runnable code delivered.

  • Programming language

    • Kotlin

  • Expertise

    • Debugging
    • Performance
    • Design
    • Databases
    • Source control

  • Frontend framework

    • Bootstrap
    • Flutter
    • jQuery
    • Thymeleaf

  • Backend framework

    • Gin
    • Ktor
    • Spring Boot

  • AI & low/no code builders

    • Cursor

Get to know chengjin

chengjin

Backend Dev Kotlin, Spring Boot, PostgreSQL

  • FromChina
  • Member sinceOct 2026

  • Languages

    English
15+ years in JVM backend. Specialize in Kotlin, Spring Boot, quarkus, PostgreSQL and API optimization. Deliver clean, documented code with fast replies and on-time delivery.

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