> Markdown version of [/jobs/ext/1190947-cyber-security-engineer](https://www.wearedevelopers.com/jobs/ext/1190947-cyber-security-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cyber Security Engineer - **Company:** MI5 - **Location:** London, UK (Remote available) - **Experience:** Expert - **Salary:** £64,005.0 - £66,332.0 - **Contract:** Permanent contract - **Skills:** Software System Penetration Testing, Cyber Security, Information Systems Security Architecture Professional, Red Team (Cyber Security), Purple Team (Cyber Security), Vulnerability Analysis - **Published:** July 6, 2026 - **Apply:** https://recruitmentservices.applicationtrack.com/vx/lang-en-GB/mobile-0/appcentre-1/brand-5/xf-c698879d7411/candidate/so/pm/1/pl/4/opp/3790-Senior-Cyber-Security-Engineer-Ref-3790/en-GB ## About the Role You'll bring practical experience in a security-focused role, such as cyber security engineering, penetration testing or a closely related technical discipline. This could be supported by a STEM degree with relevant experience, or a technical role with a strong security focus. Experience with real-world systems is essential, identifying and solving security issues, alongside a solid understanding of core security principles such as Secure by Design. You'll have applied techniques such as threat modelling, vulnerability assessment or security testing, and be confident thinking critically about how systems can be exploited and secured. You communicate clearly with both technical and non-technical stakeholders and are comfortable working collaboratively to resolve issues. Curious and pragmatic, you're motivated to keep learning and apply your expertise to complex, high-impact challenges. Training and development From the moment you join, you'll be supported to develop your expertise in cyber security through a blend of hands-on experience and structured learning. You'll work closely with experienced colleagues across a range of security challenges, gaining exposure to different systems, tools and approaches., * You'll be required to reach the minimum pass mark for the online Situational Judgement Test (SJT), which assesses criteria important for all roles in our organisation * Demonstrate practical familiarity in a security-focused role - to be assessed at application sift * Demonstrate the ability to identify and solve real-world security issues including applying threat modelling, vulnerability assessment, or security testing, and a solid understanding of Secure by Design principles - to be assessed at application sift ## Description In addition, there will be opportunities to qualify for additional allowances and a skills-related payment under the Government Digital and Data Profession Capability Framework (GDDPCF), formerly the (DDaT) Digital, Data and Technology Capability Framework. Flexible working: We support full time, part time, compressed hours, and other flexible working patterns. We recognise the importance of achieving a positive work-home balance and will work with colleagues to consider flexible working arrangements where possible, taking individual circumstances and business needs into account. Some homeworking opportunities may be available; however, this role is primarily office-based due to the sensitive nature of the work, and home working is not guaranteed., As a Senior Cyber Security Engineer, you'll play a central role in protecting the organisation's digital products, embedding security into how systems are designed and built. The role combines engineering and security expertise, applying practical skills to identify weaknesses, validate controls and help teams deliver secure, resilient systems from the outset. Working within a highly collaborative environment, you'll contribute to organisation-wide security capability, tackling complex challenges across a diverse and evolving technology landscape. Early engagement in the development lifecycle is vital, shaping design decisions, influencing architecture and ensuring security is integrated into modern engineering practices. This role combines technical depth with real influence. Threat modelling, vulnerability assessment and security testing form a core part of the work, applying an adversarial mindset to uncover risks. Just as important is working directly with engineers, architects and stakeholders to resolve those risks, improve practices and raise the organisation's overall security maturity. You'll take a "purple team" approach, combining elements of red team testing and defensive security - identifying vulnerabilities and working with teams to fix them, building better, more secure systems. The role also extends to the wider direction of security engineering: supporting less experienced colleagues, influencing technical decisions and helping stakeholders understand risk, trade-offs and priorities. With a high degree of autonomy, you'll take ownership of complex problems and play a key role in how security is delivered across the organisation. ## Related Videos - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Introduction to Responsible AI: Balancing Value and Risk](https://www.wearedevelopers.com/videos/1972-introduction-to-responsible-ai-balancing-value-and-risk) - [How to Cause (or Prevent) a Massive Data Breach- Secure Coding and IDOR](https://www.wearedevelopers.com/videos/39-how-to-cause-or-prevent-a-massive-data-breach-secure-coding-and-idor) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [Reporting Active Exploits in 24 Hours: Are You Ready for the CRA?](https://www.wearedevelopers.com/videos/100248-reporting-active-exploits-in-24-hours-are-you-ready-for-the-cra) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities)