Senior Developer – Java Spring

Senior Developer – Java Spring

London | £65,000 - £70,000 | Permanent

Published: 04.02.26 Ref: BBBH52365_1770196522

Senior Java Engineer

Modern Platform | Greenfield Work | Collaborative Team

Hybrid - 3 days onsite (flexible days)

Up to £70,000 + benefits (some flexibility for the right person)

We're working with a large, well-established organisation who are continuing to build out a modern, evolving platform that supports real-world operational processes at scale. This is a hands-on role within a pure in-house engineering team, offering a strong mix of delivery, collaboration, and technical influence.

They're looking for a capable Java engineer who enjoys being close to the code, contributes thoughtfully within a team, and is comfortable working in an environment where delivery and improvement go hand in hand.

The Opportunity

You'll join a small, collaborative team working on a relatively new system that is still being shaped and evolved. The work includes a healthy mix of new feature development, iteration, and improvement, with room to influence how things are built without the pressure of owning everything.

The balance between hands-on delivery and higher-level contribution naturally shifts depending on priorities - some weeks are delivery-heavy, others allow more space for refinement, learning, and improvement.

While this role sits at a Senior level, the focus is less on title and more on capability, judgement, and how you approach problem-solving.

What You'll Be Working On

The platform supports a high-throughput operational environment, where software is used directly in day-to-day processes. This includes

**Applications supporting workshop and operational workflows

**Tablet-based interfaces used in live environments

**Integrations with workforce and process management systems

**Ongoing development of a relatively new, greenfield platform

You'll be joining a team that values pragmatic engineering and steady improvement.

Tech Environment

The stack is modern and well-supported:

**Java / Spring Boot (core focus)

**React on the frontend

**OpenShift / Kubernetes for most deployments

**Full CI/CD pipelines in place

**A growing amount of AWS-native development

DevOps experience isn't a requirement. The priority is strong application development, with plenty of opportunity to broaden your skill set over time if you're interested.

What They're Looking For

**Solid, hands-on experience with Java and Spring Boot

**Comfortable operating at a senior-capable level within a delivery-focused team

**Someone inquisitive who asks questions and contributes ideas

**Happy collaborating closely with other engineers, product and design

**Experience with React is useful, but backend experience is the priority

They're open to different strengths - whether that's delivery, system thinking, mentoring, or continuous improvement - as long as you bring good engineering judgement and a collaborative mindset.

Working Pattern & Culture

**Hybrid working - 3 days per week onsite (flexible days, team-aligned)

**Teams primarily based in London, with cross-site collaboration

**Supportive, low-ego engineering culture

**Emphasis on good engineering practices and sustainable delivery

Interview Process

**Initial remote conversation

**Technical exercise

**Final onsite interview

Interested?

If you're a strong Java engineer looking for a senior-level role where you can contribute, learn, and have a real impact without being boxed into a single "type" of engineer, this is a great opportunity to explore.

Apply now or get in touch for a confidential conversation.

Cathcart Technology is acting as an Employment Agency in relation to this vacancy.

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