Java Developer-Kotlin

Ubique Systems
Burgess Hill, UK
9 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours

Tech stack

Clean Code Principles Java (Programming Language) Automation of Tests Code Review Software Debugging DevOps Spring Framework Junit PostgreSQL MySQL SQL Databases Spring-mvc
+10 more
Spring-boot Backend Git Kotlin Integration Tests Front End Software Development Api Design Restful APIs Software Version Control Microservices

Job description

As a Java with Kotlin Developer, you will design, develop, and maintain backend services and applications using modern Java and Kotlin frameworks. You’ll collaborate with product owners, architects, and fellow engineers to deliver high-quality code, participate in code reviews, and improve engineering standards.

Key Responsibilities

  • Develop and enhance backend systems using Java and Kotlin
  • Write clean, maintainable, and efficient code following best practices
  • Collaborate with DevOps to support CI/CD pipelines and automated testing
  • Participate in architectural discussions and suggest improvements
  • Troubleshoot, debug, and resolve performance issues
  • Review code and mentor junior engineers
  • Contribute to API design and integration with frontend services

Required Skills & Experience

  • Strong experience in Java (8+)
  • Kotlin solid practical experience
  • Experience with Spring Framework (Spring Boot, Spring MVC, etc.)
  • Good understanding of RESTful API design and microservices architecture
  • Familiarity with SQL databases (e.g., PostgreSQL, MySQL)
  • Knowledge of version control systems (e.g., Git)
  • Experience with unit/integration testing frameworks (e.g., JUnit, MockK)
  • Ability to write effective technical documentation
  • Excellent communication and teamwork skills

Requirements

  • Strong experience in Java (8+)
  • Kotlin solid practical experience
  • Experience with Spring Framework (Spring Boot, Spring MVC, etc.)
  • Good understanding of RESTful API design and microservices architecture
  • Familiarity with SQL databases (e.g., PostgreSQL, MySQL)
  • Knowledge of version control systems (e.g., Git)
  • Experience with unit/integration testing frameworks (e.g., JUnit, MockK)
  • Ability to write effective technical documentation
  • Excellent communication and teamwork skills

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

2:15 min

Developing front-end client applications using Kotlin Multiplatform libraries

Mario Bodemann Mario Bodemann

2:18 min

Scaling MySQL databases for massive user growth

Johannes Nicolai Johannes Nicolai +1 · LIVE

4:15 min

Refactoring test code dependencies with Maven and JUnit

Benjamin Bischoff Benjamin Bischoff · Europe 2026 Virtual

6:21 min

Investigating push inefficiencies with upstream Git experts

Jonathan Creamer · Coffee With Developers

1:43 min

Summarizing the practical engineering advantages of writing Kotlin

Iris Hunkeler · LIVE

1:48 min

Analyzing network packets with database protocol tools

Daniël van Eeden Daniël van Eeden · World Congress 2026 Europe

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