Software Engineer

Saab UK; City Of London; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading defence and security company in the UK is seeking a Software Engineer to join its Public Safety Solutions business unit. You will design and maintain telephony and communication software that helps coordinate emergency services. Ideal candidates should have a degree in Software Engineering and skills in C# .NET Core, SIP signalling, and multithreading. Join us to contribute to saving lives through innovative technology.

Qualifications

• Degree in Software Engineering or related discipline.
• Experience in building telephony and communication software solutions.
• Strong communication skills both with the team and externally.

Responsibilities

• Design, develop, and maintain telephony and communication software solutions.
• Collaborate with cross‑functional Agile teams.
• Continuously explore and implement new technologies.

Skills

C# .NET Core

Test driven development (TDD)

Strong communication skills

SIP signalling/RTP Realtime Transport Protocol

Git

Multithreaded applications

SQL

Docker

Linux

Distributed services

Call Centre experience

Asterisk

Kamailio

Education

Degree in Software Engineering or related discipline

Tools

Wireshark

Team City (CICD)

Job description

Introduction

Saab in UK is growing rapidly, with over 500 colleagues across eight sites. We bring together Swedish heritage and British expertise to drive innovation in areas such as software engineering, underwater robotics, radars, AI, and armed forces training. Joining Saab in UK means contributing to the security and resilience of society while building a career with real scope for personal and professional growth.

What you will be part of:

Explore a wealth of possibilities. Take on challenges, create smart inventions, and grow beyond. This is a place for curious minds, brave pioneers, and everyone in between. Together, we achieve the extraordinary, each bringing our unique perspectives. Your part matters.

Saab is a leading defence and security company with an enduring mission, to help nations keep their people and society safe. Empowered by its 26,000 talented people, Saab constantly pushes the boundaries of technology to create a safer and more sustainable world.

Saab designs, manufactures and maintains advanced systems in aeronautics, weapons, command and control, sensors and underwater systems. Saab is headquartered in Sweden. It has major operations all over the world and is part of the domestic defence capability of several nations. Read more about us here.

The Role

This role is part of our Public Safety Solutions Business Unit.

You’ll join Saab’s Public Safety Solutions business unit where we develop and deploy Command, Control, and Communication (C3) and a team dedicated to developing mission‑critical software solutions that help police, fire and rescue services, ambulance dispatchers, airports, and public transport agencies coordinate and respond to incidents that matter.

As a Software Engineer within Telephony and Communications, you’ll play a key role in building and maintaining our communication infrastructure, ensuring seamless, reliable, and secure voice and data connections across diverse and demanding environments. Your work will directly contribute to saving lives and keeping societies safe.

Key Responsibilities

• Design, develop, and maintain telephony and communication software solutions.
• Work with modern protocols and technologies (e.g. SIP, RTP, VoIP, PBX systems, messaging frameworks).
• Collaborate with cross‑functional Agile teams to deliver high‑performance, scalable, and resilient systems.
• Work with our partners and customers to build tomorrow’s solutions
• Comprehend an existing solution and work towards MVP s
• Continuously explore and implement new technologies that enhance our communication capabilities.
• Participate in end‑to‑end system design, from architecture to deployment.

Experience and Qualifications

• Degree in Software Engineering or related discipline.
• C# .NET Core
• Experience in multithreaded applications - Task Parallel Library specifically
• Test driven development (TDD)
• Git
• Strong communication skills both with the team and externally
• SIP signalling/RTP Realtime Transport Protocol
• BDD (SpecFlow)
• SQL
• DockerWireshark
• Distributed services
• Linux
• Team City (CICD) or similar
• Call Centre experience
• Asterisk
• Kamailio

By submitting an application to Saab UK you consent to undertaking workforce screening activities that may include but are not limited to: Baseline Personnel Security checks, National Security Vetting, reference checks, verification of working rights and in all circumstances preferred candidates will be placed through a security interview.