Principal Software Engineer

Advanced Resource Managers Ltd; Luton; Hybrid; GBP 65,000 - 95,000; Full time

Benefits offered by this job

SC Clearance

Hybrid work model

Job summary

Advanced Resource Managers Ltd in Luton is seeking experienced C# .NET developers to deliver current and future programs within the Integrate Mission Solutions sector of the Electronic Warfare line of business. The role offers hybrid work (4 days on-site, 1 day remote) and a 12-month contract, with security clearance required.

Join a mature development environment and work on cutting-edge defence technology, taking ownership from requirements through delivery while collaborating with a skilled

Qualifications

• Proven experience in C# .NET development including Web Based applications.
• Strong understanding of object-oriented design and software development methodologies.
• Experience across the full software lifecycle including automated testing frameworks and practices.
• Experience with CI/CD, Agile practices, and microservices architecture.

Responsibilities

• Develop robust applications using C# .NET within a Windows environment.
• Take ownership of complex tasks across the full software lifecycle—from requirements to integration, testing, and delivery.
• Apply object-oriented design principles and verification/validation techniques.
• Collaborate with a skilled team while maintaining independence in your work.

Skills

C# .NET development

Object-oriented design

CI/CD practices

Agile methodologies

Microservices architecture

Automated testing

Windows environments

Tools

WPF

WinForms

Visual Studio

Azure DevOps

DOORS

Cameo

Job description

Location: Luton (Hybrid: 4 days on-site, 1 day remote)

Contract: 12 months

IR35: Inside IR35

Security Clearance: Full UK SC required upon application

Day Rate: Competitive (please enquire)

About the Role

We need experienced C# .net developers who can work with the minimum of supervision to deliver current and future programs. Working within our Integrate Mission Solutions sector of the Electronic Warfare Line of Bussiness this role provides an opportunity to work on the latest defence technology within a mature development environment.

What You’ll Do

• Develop robust applications using C# .NET within a Windows environment.
• Take ownership of complex tasks across the full software lifecycle—from requirements to integration, testing, and delivery.
• Apply object-oriented design principles and verification/validation techniques.
• Collaborate with a skilled team while maintaining independence in your work.

What We’re Looking For

• Proven experience in C# .NET development including Web Based applications.
• Strong understanding of object-oriented design and software development methodologies.
• Experience across the full software lifecycle including automated testing frameworks and practices.
• Experience of Continuous Integration / Continuous Delivery (CI / CD) practices.
• Ability to work independently and deliver high-quality solutions with minimal supervision.
• Experience with Agile methodologies (Scrum, Kanban) and microservices architecture.
• Defence or Electronic Warfare domain experience.
• Familiarity with frameworks/tools such as WPF, WinForms, Visual Studio.
• DOORS, Cameo, and Azure DevOps.

Why This Contract?

• Immediate start (subject to onboarding and SC Clearance).
• Hybrid working model for flexibility (4 days on-site, 1 day remote).
• Opportunity to work on innovative defence technology with a high degree of autonomy.
• Long-term project with strong potential for extension.