Senior Java Developer

Company: GMEX Group
Apply for the Senior Java Developer
Location: London
Job Description:

1. Job purpose

We are looking for a sharp Senior Java Developer to play a key role in a small collaborative team building trading venues and associated infrastructure. We follow rapid development and deployment cycles for projects and share ownership of the entire codebase, so you will get great experience across a variety of exchange applications and financial product types. We care about the code that we write and we want a developer that is more interested in writing clean, maintainable, efficient code rather than a quick hack.

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Any former experience with specific cryptocurrencies, and/or related skills such as decentralized finance (DeFi), tokenisation, trading, matching engine, clearing and settlement as well as capital markets system integration will be a very useful complement to the above.

2. Key technology used

  • Primary: Java 8+
  • Secondary: Spring
  • FIX
  • Hibernate (Postgres)
  • Sockets
  • Linux
  • Maven
  • AWS/Cloud deployment
  • SVN / GIT
  • EPL (Esper)
  • JMS (ActiveMQ)

3. Methodology

  • Agile / Scrum
  • Continuous integration
  • Test automation
  • TDD

4. Requirements

  • Must have
    • Core Java SE
    • Desire to learn
    • Passion for writing clean, re-usable code
    • Understanding of peer-to-peer networks
  • Nice to have
    • High throughput, low latency systems
    • Financial markets
    • FIX
    • Blockchain
    • Spring
    • Hibernate
    • Complex event processing / EPL
    • SQL

5. Company culture

We provide best of breed trading venue and post-trade solutions to global financial markets and have clients across the globe and across multiple asset types. We value keen, bright people who want to make a difference to a project and who want to learn and expand their abilities. xwzovoh

Being a fast-growing, agile company, we are not stifled by the red tape that can tie up larger organisations and we are able to give staff the opportunity to contribute or to assume leadership for new approaches and initiatives – the only limitation will be your ambition!

Posted: March 1st, 2026