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Senior Cyber Software Engineer​/Technical

Job in Gloucester, Gloucestershire, GL1 2HY, England, UK
Listing for: Hackajob Ltd
Contract position
Listed on 2026-10-21
Job specializations:
  • Engineering
    Cybersecurity, Software Engineer
Job Description & How to Apply Below
Position: Senior Cyber Software Engineer/ Technical
Our client is the digital and intelligence arm of a major defence company. Location(s): UK, Europe & Africa : UK :
Gloucester Our client is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across 10 countries to collect, connect and understand complex data, so that governments, nation states, armed forces and commercial businesses can unlock digital advantage in the most demanding environments.

Job Title:

Senior Cyber Software Engineer/ Technical Lead

Location:

Gloucester These roles require 5 days/ week on site. We offer a range of flexible working arrangements – please speak to your recruiter about the options for this particular role. Who we are Join our client and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most.

You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow – shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space – there's no limit to where a career at our client could take you. Role description We are looking for experienced Software Engineers who want to have a real impact, and who are keen to apply their creative thinking to the ever-changing space of cybersecurity.

Core duties Technical delivery: understand and use various development methodologies to deliver solutions to our customers, factoring in operational security into system design, development, and testing. Mentorship, team-leadership, and collaboration: work in teams to deliver high-assurance code, conducting constructive peer review, and knowledge sharing with junior team-members. Implementing robust solutions: design, develop, test, and document software in accordance with business & industry best practices, to meet our customer requirements, leveraging continuous integration where appropriate.

Adaptability: embrace emerging technology, tools, and language trends, while identifying the risks that they could present. Security mindset: be capable of identifying flaws during solution design and implementation, along with mitigations. What we're looking for :
Familiarity with a variety of development tools (IDEs, debuggers, source control) and techniques (unit testing, mocking, continuous integration, test-driven development). Knowledge of the principles of high-assurance development, and an awareness of the importance of IT security for companies and governments. Intermediate to advanced understanding of computing principles (e.g. stack/heap distinction, compiled/interpreted languages). Proficiency with at least one solution language (e.g. C++, Java, C#) and one utility language (e.g. Python, JavaScript, Perl, Power Shell).

Ability to use and configure more than one major operating system. Ability to pick up new languages and technologies easily. Ability to communicate regarding technical topics to a variety of audiences, including non-technical.

Experience of mentoring others and/or leading technical tasks. The team Operational Cyber Group is a team of industry-leading experts in high-assurance development, research, reverse engineering, and vulnerability research.

With a focus on National Security, we work on some of the country's toughest challenges. Our people provide mission-changing capability for our customers across a wide variety of platforms and technologies. Why our client? Here you'll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work – this is a place where you can grow your career with confidence and be empowered to be your best.

You'll be recognised for your…
Position Requirements
10+ Years work experience
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