Senior Developer Java Spring

Cathcart Associates; Greater London; Hybrid; GBP 59,000 - 70,000; Full time

Job summary

A well-established technology consultancy in Greater London is seeking a Senior Java Engineer to contribute to the evolution of a modern platform. This hands-on role involves working within a collaborative team on new feature development and system improvements. With a focus on Java and Spring Boot, the position offers a hybrid working model with three days onsite, emphasizing a supportive culture and sustainable delivery practices. An excellent opportunity for engineers looking to make a significant impact in their field.

Benefits

Competitive salary

Flexibility in working days

Supportive work culture

Qualifications

• Solid hands-on experience with Java and Spring Boot.
• Inquisitive mindset contributing ideas to the team.
• Comfortable in a senior-capable delivery-focused environment.

Responsibilities

• Join a collaborative team working on a greenfield platform.
• Focus on new feature development and system improvement.
• Work in a high-throughput operational environment.

Skills

Java

Spring Boot

React

Collaboration

Problem-solving

Tools

OpenShift

Kubernetes

AWS

Job description

Overview

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.
• 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.