Java Software Engineer

Job description

Java Backend Engineer | GNST POD

Location: Burgess Hill (Hybrid: 3 days per week onsite MUST)

Level: Mid-Senior (Up to 5 years experience)

Are you passionate about building high-availability, distributed systems? We are looking for a Java Backend Engineer to join our GNST POD in Burgess Hill. You’ll be at the heart of our development lifecycle, crafting world-class software that powers customer-facing and business-critical applications.

If you thrive in an Agile environment and have a knack for Microservices and Event-Driven Architecture, we want to hear from you.

The Role

As a Software Engineer, you won’t just write code—you’ll help shape our development standards. You will contribute to the design, debugging, and deployment of robust systems using modern distributed frameworks.

Key Responsibilities:

• Build & Scale: Develop high-quality software using Java 11/17 and Spring Boot.
• Quality First: Participate in code reviews, TDD, and automated testing (Cucumber/JMeter).
• DevOps Culture: Enable CI/CD through Jenkins, GitHub, and automated deployments.
• Observability: Monitor and troubleshoot applications using Splunk, Kibana, and Grafana.
• System Design: Scale applications based on demand and contribute to high-availability architecture.

What You Bring

• Core Tech: 5+ years of professional experience with Java (8+, ideally 11/17) and Spring Boot.
• Messaging: Proven experience with Kafka and its ecosystem.
• Data: Proficiency in both SQL (Oracle, PostgreSQL) and NoSQL (Couchbase, Cassandra).
• Architecture: Deep understanding of Microservices and Event-Driven systems.
• Tooling: Hands-on experience with Jenkins, Git, and cloud infrastructure.

Bonus Points for:

• Experience with GoLang (1+ year).
• Knowledge of Reactive Programming (e.g., Vert.X).
• Expertise in Caching mechanisms and high-transaction systems.
• Technical certifications in Java or Cloud technologies.

Why Join Us?

You will work in a collaborative, tech-forward environment where consistent development practices and documentation are valued. This is an opportunity to manage applications with high transactions per second (TPS) and ensure 24/7 availability for our global users.

Requirements:

• University Degree in Computer Science, Engineering, or equivalent experience.
• Ability to work from our Burgess Hill office 3 days a week.

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Extra information

Status

Open

Education Level

Secondary School

Location

Burgess Hill

Type of Contract

Full-time jobs

Published at

19-05-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English