C# Software Engineer

  • Matchtech
  • Basildon, Essex
  • Jan 13, 2026
Contractor Telecommunications

Job Description

Location: Basildon (20% onsite - You will get an introduction to the project for 3-4 weeks, then hybrid working with some on site to access test hardware)

Duration: 3 month initial contract

Rate: 64ph UMB (Inside IR35)

Role details:


Our client, a leading organisation in the Defence & Security sector, is seeking a Senior Software Engineer to join their team on a contract basis in Basildon. This role involves initial onsite work for 3-4 weeks to introduce you to the project, followed by hybrid working with some on-site attendance to access test hardware.



Key Responsibilities:

  • Participate in requirements capture, design, verification and validation, and compliance processes
  • Develop software compliant to DO-178C level D standards
  • Utilise the Serena Dimensions CM tool for software configuration management
  • Develop applications using MS Visual Studio with C#
  • Create software that utilises the Windows Communication Foundation (WCF) as part of the .NET Framework
  • Develop Windows Presentation Foundation (WPF) C# GUI applications
  • Understand and work with existing code with limited documentation
  • Develop embedded software within formal constraints and to meet user expectations
  • Collaborate using iterative development lifecycles, such as tailored Agile
  • Use tools associated with iterative development (Jira / DevOps)


Job Requirements:

  • Experience with software development processes and creating design review presentations
  • Proficiency in using MS Visual Studio with C#
  • Experience with the Windows Communication Foundation (WCF) and Windows Presentation Foundation (WPF)
  • Understanding of embedded development tools and approaches
  • Familiarity with iterative development lifecycles and associated tools

Due to the nature of the role, candidates must hold or be eligible to obtain UK Security Clearance.


If you are a skilled software engineer looking for an exciting new challenge within the Defence & Security sector, we would love to hear from you. Apply now to join our client's dynamic team in Basildon.