Principal Java Engineer

Principal Java Engineer

• Salary to £60k-£90k + company options scheme
• Hybrid working (1 day per week in their London Vauxhall offices)

NB: Please only apply if you have resided in the UK for the past 5 years and are prepared to go through UK SC Security Clearance

Overview

This company is a Workflow & AI Orchestration Specialist. They're on a mission to modernise how public sector organisations manage casework, derive insight from data and deliver citizen services. They’re growing fast and looking for bright, dynamic people to help build their business.

Role

They’re looking for an experienced (Principle/Team Lead) Java Engineer to join their implementation team.

You’ll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration — helping their public-sector clients build secure, scalable, and resilient digital services.

You’ll collaborate with solution architects, business analysts, and designers to translate workflows into elegant, maintainable code. You’ll play a key part in defining technical standards, optimising runtime performance, and mentoring less- experienced engineers in workflow-centric delivery.

This is an ideal role for someone who enjoys solving complex process problems through clean code, automation, and modern engineering practices.

Responsibilities

Design, develop, and deploy Camunda-based process and decision automation solutions

Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows

Translate BPMN and DMN models into executable workflows and reusable components

Collaborate closely with analysts and service designers to refine and iterate business processes

Develop and maintain automated test suites, CI/CD pipelines, and containerised deployments

Optimise Camunda engine performance and monitor workflow metrics for production environments

Participate in code reviews, peer testing, and technical design discussions

Contribute to their internal best-practice frameworks and automation accelerators

Essential

Eligible (have resided in the UK for the past 5 years) and prepared to go through UK SC Security Clearance

Strong experience in Java software engineering and object-oriented design

Strong Spring (Boot) experience

Experience with REST APIs, and microservice architectures

Knowledge of Docker and Kubernetes for containerisation and orchestration

Proficiency in Git, CI/CD pipelines, and automated testing frameworks

Understanding of event-driven design and message brokers (e.g. Kafka, RabbitMQ)

Good knowledge of security, authentication, and integration patterns for enterprise systems

Experience working in agile teams within digital transformation or automation programmes

A willingness to learn BPMN and Camunda tooling

Some exposure to process automation or microservice orchestration

Desirable

Experience with Camunda 8 (Zeebe) clusters and Operate/Tasklist components

Experience implementing solutions using Camunda 7 or 8 (BPMN/DMN)

Familiarity with Camunda connectors, external task workers, and scripting extensions

Exposure to cloud platforms (AWS, Azure, GCP) and infrastructure-as-code (Terraform, Helm)

Experience integrating process automation with case-management or service-orchestration platforms

Understanding of agentic AI capabilities and how they can complement workflow automation

Experience mentoring developers or contributing to open-source Camunda extensions

Already holding UK security clearance (SC, DV, eDV)

Other Stuff

NB: Please only apply if you have resided in the UK for the past 5 years and are prepared to go through UK SC Security Clearance

NB: for non-UK Citizens; we cannot accept applications from anyone requiring sponsorship (now or in the future) for UK permanent employment status. If you are utilising a work visa this must allow you to work in the UK unrestricted for at least the next 5 years.

Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital transformation automation Java developer Camunda developer Zeebe Cloud AWS Azure GCP Terraform Helm process automation agentic AI artificial intelligence security clearance SC DV eDV London home based hybrid lead senior manager manage