> Markdown version of [/jobs/ext/2256081-java-developer-kotlin](https://www.wearedevelopers.com/jobs/ext/2256081-java-developer-kotlin). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Developer-Kotlin - **Company:** Ubique Systems - **Location:** Burgess Hill, UK - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), Automation of Tests, Code Review, Software Debugging, DevOps, Spring Framework, Junit, PostgreSQL, MySQL, SQL Databases, Spring-mvc, Spring-boot, Backend, Git, Kotlin, Integration Tests, Front End Software Development, Api Design, Restful APIs, Software Version Control, Microservices - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815172354-java-developer-kotlin ## About the Role * 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 ## 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 ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Moving from Java to Kotlin](https://www.wearedevelopers.com/videos/384-moving-from-java-to-kotlin) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Top in-demand programming languages to learn in 2021](https://www.wearedevelopers.com/magazine/30-top-in-demand-programming-languages-to-learn-in-2021)