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# Senior Java Distributed Systems Engineer - Fintech - London - Adaptive Financial Consulting

- **Company:** Adaptive Financial Consulting Ltd
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Profiling, Software Quality, Code Review, Software Debugging, Distributed Systems, Software Engineering, Java Application Server, State Machines, Software Library
- **Published:** November 7, 2026
- **Apply:** https://www.reed.co.uk/jobs/senior-java-distributed-systems-engineer-fintech-london-adaptive-financial-consulting/57539348

## About the Role

* Collaborative, with a genuine interest in sharing knowledge and learning from others.
 * Able to use your judgement to prioritise competing demands based on long-term value and explain those priorities to stakeholders.
 * Confident in challenging the status quo and suggesting improvements, both technical and cultural.

YOU HAVE:

 * Experience designing, building, debugging and operating distributed systems.
 * Strong experience developing server-side software in Java.
 * Experience designing and evolving messaging protocols or software libraries.
 * Experience using different forms of testing to support software quality, including correctness and performance.
 * Experience measuring, benchmarking and profiling components or systems.
 * Strong written and verbal communication skills.

## Description

We are hiring a Senior Java Distributed Systems Engineer to help build Aeron Sequencer , our technology for applying state machine replication to capital markets. You will work on distributed systems that enable other engineering teams to build performant, reliable software. This is a hands-on role with the opportunity to influence product decisions, architecture, engineering practices, and how we communicate our work., * Write clean, efficient Java code that is maintainable and self-documenting.

 * Design and evolve messaging protocols and software libraries.
 * Troubleshoot and debug Java applications and distributed systems.
 * Drive improvements in correctness and performance through testing, benchmarking, measurement and profiling.
 * Raise the quality of our work through code reviews, pairing and technical discussions.
 * Contribute to product decisions, not just task execution.
 * Keep up to date with relevant software engineering technologies and practices.
 * Communicate technical decisions and priorities clearly to both technical and non-technical stakeholders.
 * Join the team's on-call rotation to troubleshoot and resolve production issues once familiar with the systems., Long interview processes are stressful and boring and that is not us

We want to make sure that everything runs smoothly.

So here you will have three stage interviews:

1- A chat with one of our great recruiters.
2- A zoom chat with one of our Java colleagues where they will ask you detailed questions about Java knowledge and your experience.
3- A Face to Face interview (either in our office or via Zoom). During this interview, we will dig even deeper, and you will have a technical task to do. You will also have a chat with our local director.

A little tip for you during those stages:

Collaboration is massively important to us, so don't hesitate to share your thoughts, ask questions, ask for help if needed, etc

DIVERSITY & INCLUSION:

Diversity and inclusion are key to a great workplace, and Adaptive is better when it's more representative of the world around us. We want everyone to feel comfortable bringing their whole selves to work without any fear of judgment or negativity.

All we ask is that our colleagues are respectful, collaborative, passionate about what they do, and have the skills needed to be successful in their roles.

Background check: the employment/engagement is subject to an acceptable background check that will be run by Adaptive