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Java Developer

Job in Chester, Cheshire, CH1, England, UK
Listing for: Ascendion
Full Time position
Listed on 2026-09-02
Job specializations:
  • Software Development
    Java Developer, Backend Developer
Job Description & How to Apply Below
Java Developer – Banking

Location:

Chester, UK

Experience:

5+ years
Industry: Banking / Financial Services

Ascendion is looking for an experienced Java Developer to join a technology team supporting a leading Banking client in Chester. The successful candidate will have strong hands-on experience in Java development, JVM technologies, application performance and scalable enterprise applications, ideally within a banking or financial services environment.

Key Responsibilities

* Design, develop and maintain robust, scalable and high-performance applications using Java.

* Develop applications and services running on the JVM, with a strong understanding of JVM internals and runtime behaviour.

* Analyse and resolve application performance, memory and concurrency issues.

* Perform JVM tuning, including heap sizing, garbage collection and thread management.

* Use JVM monitoring and profiling tools to identify performance bottlenecks and memory leaks.

Essential

Skills & Experience:

* Strong commercial experience in Java 8/11/17+

* Strong understanding of JVM architecture and internals.

* Hands-on experience with JVM performance tuning and troubleshooting
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