Principal Java Engineer - Hybrid (South Belfast)

Ocho; Belfast; Hybrid; GBP 90,000 - 95,000; Full time

Job summary

A leading global security company is seeking a Principal Java Engineer in South Belfast. The role requires expertise in Java and Spring Boot, focusing on large-scale, cloud-native systems. Responsibilities include mentoring teams, defining architecture, and delivering secure solutions. This hybrid position offers competitive salary and opportunities for career progression.

Benefits

Bonus

Pension

Healthcare

Work From Home

Qualifications

• Extensive commercial experience as a Principal/Lead Java Engineer.
• Expertise with Java 17+ (ideally Java 21) and Spring Boot.
• Strong track record delivering microservice architectures on Kubernetes and AWS.

Responsibilities

• Leading the design and delivery of large-scale cloud-native systems using Java.
• Defining technical architecture and influencing long-term engineering strategy.
• Mentoring engineers and shaping hiring decisions.

Skills

Java

Spring Boot

Microservices

Kubernetes

CI/CD

Distributed Systems

Job description

Overview

Principal Java Engineer - Hybrid (South Belfast) | £90k-£95k

Join a leading global security company building scalable, resilient platforms used by enterprise clients worldwide. We're expanding our Belfast engineering hub and seeking a Principal Java Engineer to take ownership of complex distributed systems, drive architectural direction, and mentor high-performing teams.

This is a hybrid role based in South Belfast, with two days per week onsite, offering the chance to be part of a collaborative engineering culture while retaining flexibility.

What you\'ll be doing

• Leading the design and delivery of large-scale, cloud-native systems using Java and Spring Boot
• Defining technical architecture and influencing long-term engineering strategy
• Building and optimising high-performance microservices deployed on Kubernetes (EKS)
• Designing and implementing CI/CD pipelines, deployment automation, and observability practices
• Mentoring engineers, shaping hiring decisions, and raising the technical bar across the team
• Collaborating closely with product and InfoSec teams to deliver secure, customer-focused solutions

What we\'re looking for

• Extensive commercial experience as a Principal / Lead Java Engineer
• Expertise with Java 17+ (ideally Java 21), Spring Boot, and modern distributed systems design
• Strong track record delivering microservice architectures on Kubernetes and AWS
• Hands-on experience with CI/CD, automation, monitoring, and cost-optimisation at scale
• Background in mentoring and leading engineering teams within agile environments
• Previous exposure to security, fintech, or other high-throughput systems a plus

What\'s on offer

• Salary £90k-£95k depending on experience
• Hybrid working with 2 days onsite in South Belfast
• Opportunity to shape technical direction in a high-impact security platform
• Collaborative engineering culture with strong career progression pathways

Apply here or reach out to Aaron Somers at Ocho for more information via LinkedIn.

Skills

software development, software engineering, Java

Benefits

Work From Home, bonus, pension, healthcare