Senior Java Developer

Senior Java/Python Engineer – SC Cleared

Location: UK – Hybrid, 2 days onsite

Clearance: Active SC Clearance required

Contract: Contract

Role: Senior Java/Python Engineer

We are looking for an experienced Senior Java/Python Engineer to join a high-performing Agile engineering team delivering secure, highly available and scalable microservices and API platforms.

You will be hands-on with modern engineering technologies, working across microservices, APIs, Kafka, cloud databases, containers and observability, while also providing technical leadership and mentoring junior engineers.

Key Responsibilities

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• Design and develop scalable Java/Python microservices and REST APIs.
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• Build and operate event-driven solutions using Apache Kafka.
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• Design and optimise AWS Aurora PostgreSQL databases and data platforms.
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• Deploy and support applications using Docker and Kubernetes.
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• Develop API integrations using REST, JSON and modern API design practices.
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• Implement resilient systems with appropriate retry, timeout and error-handling mechanisms.
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• Work with monitoring and observability tools including Grafana, Prometheus and Dynatrace.
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• Provide hands-on production support, troubleshooting and root cause analysis.
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• Support P1/P2 incidents within a 24x7 support environment.
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• Contribute to technical architecture, engineering standards and documentation.
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• Mentor junior engineers and promote Agile engineering best practices.
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• Strong hands-on Java and/or Python development experience.
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• Advanced SQL.
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• Strong Apache Kafka experience.
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• Experience with AWS Aurora / PostgreSQL.
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• Production experience with Docker and Kubernetes.
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• Strong REST API and microservices experience.
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• Experience with Grafana, Prometheus or Dynatrace.
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• Strong debugging, troubleshooting and problem-solving skills.
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• Experience working with highly available and scalable systems.
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• Experience with API resilience, retries, timeouts and idempotency.
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• Strong communication and stakeholder management skills.
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• OpenAPI / Swagger
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• OAuth2 / token-based authentication
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• API gateways
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• Event-driven architecture
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• Data observability
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• Public sector or regulated environment experience
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• Data security and privacy
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We're looking for someone who is genuinely hands-on, enjoys solving complex technical problems and can work effectively within a multidisciplinary Agile team. You should also be comfortable providing technical guidance and mentoring less experienced engineers.

Security: Active SC Clearance is essential.

If you're an experienced Java/Python Engineer looking for your next challenging opportunity working with modern microservices, Kafka, Kubernetes and cloud technologies, we'd love to hear from you.