Contract Java Software Engineers

Avanti Recruitment; East Knighton; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A recruitment agency in the UK is seeking Contract Java Software Engineers for long-term defence projects involving secure and mission-critical systems. Preferred candidates will have experience in sonar, submarine, or maritime combat systems. Responsibilities include software development in a Java-led environment focusing on system design and operational visualisation. Candidates should be eligible for SC clearance, and a mix of onsite work is expected for this six-month contract with potential extensions.

Qualifications

• Previous defence experience preferred, especially with sonar or submarine systems.
• Experience in Java-led development environments.
• Familiarity with system design and operational visualisation.

Responsibilities

• Develop software for secure, real-time and mission-critical systems.
• Work on system design and integration tasks.
• Engage in complex data handling and visualisation.

Skills

Java (core + enterprise)

UML / software modelling

Service-oriented or open architectures

Microservices

TCP/IP and comms middleware

Windows / Linux environments

Virtualisation / containerisation

APIs (design & integration)

Databases / SQL

Real-time data, visualisation or HMI experience

Job description

Contract Java Software Engineers - Inside IR35

Avanti Recruitment is looking for Java Software Engineers for long-term defence projects focused on secure, real-time and mission‑critical systems. Previous defence experience is preferred, and those with sonar, submarine or maritime combat systems exposure will be prioritised.

You’ll be developing in a Java‑led environment with work spanning system design, integration, complex data handling, and operational visualisation.

Key Skills

• Java (core + enterprise)
• UML / software modelling
• Service‑oriented or open architectures
• Microservices
• TCP/IP and comms middleware
• Windows / Linux environments
• Virtualisation / containerisation
• APIs (design & integration)
• Databases / SQL
• Real‑time data, visualisation or HMI experience (advantage)

Additional Details

• Mix of onsite requirements
• SC clearance or eligibility required
• 6-month contract with extensions expected
• Inside IR35

If you are currently on the market, match the description and are interested, then please apply online today.