About this role
Salary: £61,000 - 101,000 per year
Requirements
- Familiarity with development tools such as IDEs, debuggers, and source control, and techniques such as unit testing, mocking, continuous integration, and test-driven development.
- Knowledge of high-assurance development principles and the importance of IT security for companies and governments.
- Intermediate to advanced understanding of computing principles, such as the distinction between stack and heap and compiled and interpreted languages.
- Proficiency in at least one solution language, such as C++, Java, or C#, and one utility language, such as Python, JavaScript, Perl, or PowerShell.
- Ability to use and configure more than one major operating system.
- Ability to learn new languages and technologies quickly.
- Ability to communicate technical topics to a range of audiences, including non-technical audiences.
- Experience mentoring others and/or leading technical tasks.
- Applicants must achieve Baseline Personnel Security Standard at a minimum. These roles require the ability to successfully achieve eDV UK security clearance; security and export control restrictions may also apply.
Responsibilities
- Understand and use development methodologies to deliver customer solutions, factoring operational security into system design, development, and testing.
- Work collaboratively to deliver high-assurance code, conduct constructive peer reviews, and share knowledge with junior team members.
- Design, develop, test, and document software in line with business and industry best practices and customer requirements, using continuous integration where appropriate.
- Adapt to emerging technologies, tools, and programming language trends while identifying potential risks.
- Identify flaws during solution design and implementation and determine mitigations.
Technologies
- ARM
- C#
- Support
- Java
- JavaScript
- Perl
- PowerShell
- Python
- Security
- C++
- Network
More
We are the digital and intelligence arm of a major defence company, with 4,500 digital, cyber, and intelligence experts collaborating across 10 countries. We are seeking experienced Senior Cyber Software Engineers/Technical Leads for our Gloucester location, with five days per week on site; flexible working arrangements may be available for this role. You would join our Operational Cyber Group, a team of experts in high-assurance development, research, reverse engineering, and vulnerability research, working on national security challenges and delivering capabilities across a wide range of platforms and technologies.
Our Capabilities division brings together engineering, consulting, and project management teams that design and implement defence solutions and digital transformation projects. We offer meaningful work, lifelong learning, career development, tailored rewards, support for financial and personal wellbeing, and a culture focused on inclusion, belonging, and a balanced lifestyle. We welcome applications from all candidates and can discuss reasonable adjustments during recruitment. Security and export control restrictions may affect eligibility; higher levels of national security vetting may require 5 to 10 years of continuous UK residency, depending on the vetting level.
last updated 46 week of 2026