Software Development Engineer
J2245
Posted: 14/01/2026
- £45 to £50 Per: hour
- Basildon, South East,
- Temporary
Our Client based in Basildon are looking for an experienced Software Development Engineer to join a specialist engineering team delivering secure Windows-based software systems for safety-critical and defence-related applications. This is a Temporary position until April 2026 with the possibility of extension.
This role would suit a self-motivated engineer who is comfortable joining a project mid-stream, investigating existing code, and contributing to the next phase of development within a structured software lifecycle.
You will receive an initial onboarding period, followed by hybrid working with occasional on-site access to specialist test hardware.
Key Responsibilities
This role would suit a self-motivated engineer who is comfortable joining a project mid-stream, investigating existing code, and contributing to the next phase of development within a structured software lifecycle.
You will receive an initial onboarding period, followed by hybrid working with occasional on-site access to specialist test hardware.
Key Responsibilities
- Develop and maintain Windows applications using C#/.NET
- Contribute to secure communications software, including WCF-based components
- Review, understand, and reverse engineer existing code where documentation may be limited
- Work within a formal software development lifecycle (requirements, design, implementation, verification, compliance)
- Participate in design reviews and technical discussions
- Collaborate with other engineers using iterative / Agile-style development
- Ensure software meets quality, safety, and user expectations
- Strong professional experience in C# and .NET
- Working knowledge of C++ (reading and understanding existing code)
- Experience with Windows Communication Foundation (WCF)
- Proven ability to investigate and understand legacy or in-flight codebases
- Familiarity with software development lifecycles, ideally within aerospace, defence, or other regulated environments
- Comfortable working to coding standards, processes, and documentation requirements
- Self-driven, proactive, and able to work with minimal supervision
- Background in aerospace, defence, or safety-critical systems
- WPF (Windows Presentation Foundation) for UI development
- Agile tools such as Jira or Azure DevOps
- Configuration management tools
- Exposure to embedded or systems-level software
- Must be eligible for UK Security Clearance (SC)
- UK national or NATO dual national required
