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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Security Engineer - 12 Months FTC London - **Company:** Pay.UK Limited - **Location:** Greater London, UK (Remote available) - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Cloud Computing, Cyber Security, Payment Systems, Systems Architecture, Software Vulnerability Management, Vulnerability Analysis - **Published:** September 10, 2026 - **Apply:** https://www.collegerecruiter.com/job/2840593825-senior-security-engineer-12-months-ftc-london ## About the Role * Practical experience designing and implementing security controls for infrastructure, applications and platforms. * Knowledge of security architecture, vulnerability management, incident response, and security control implementation. * Experience reviewing technical designs to identify security risks and define clear remediation actions. * Experience securing cloud or hybrid environments, including selecting and implementing appropriate security controls. * Experience producing technical documentation and working with cross-functional technology teams to deliver secure solutions. ## Description Join Pay.UK as a Senior Security Engineer and help protect the systems that support everyday payments across the UK. This role provides an opportunity to put advanced security engineering skills to work in a setting where trust, reliability, and clear standards are valued every day. You'll work on security within the organisation that maintains and develops UK retail payment systems processing over 11 billion transactions worth over £10 trillion each year. We're looking for someone who enjoys practical security engineering, works well with others, and can help us build secure, reliable services., * Design and implement security controls that protect payment systems, platforms and supporting infrastructure. * Review system architectures and technical designs to identify security risks and define clear remediation actions. * Carry out security testing and vulnerability analysis, then prioritise and track fixes with engineering and technology teams. * Develop and maintain security standards, engineering patterns and technical documentation for secure delivery. * Support incident investigation and response activities, including technical analysis, containment and follow-up actions. * Collaborate with engineers, architects and operational teams to embed security requirements into delivery and change processes. * Monitor security threats, control performance and technical risk, and recommend improvements based on evidence. * Provide practical security guidance on cloud, infrastructure, application and access control decisions., At Pay.UK, our behaviours are central to who we are and how we operate. They bring our values to life, shape our culture, and guide how we make decisions, collaborate, and respond to challenges across the payments ecosystem. All interview processes will assess the following behaviours: * Listen to Find Win-Wins - Empathy, Listening and Understanding * Influence with Courage - Influence, Courage * Go Horizontal First - Cross Boundary Collaboration * Take Ownership - Self Development * Opportunity Mindset - Initiative * Simplify - Achievement Orientation, At Pay.UK, we value diversity and inclusivity. Research has shown that candidates from underrepresented groups may hesitate to apply unless they meet all the requirements listed. We encourage all qualified candidates to apply, regardless of how closely their skills and experience match the requirements. We are committed to supporting accessibility needs and creating a welcoming environment for all employees. Become part of our team and contribute to the creation of an inclusive work environment that values everyone's unique input., We continually measure our efforts to ensure we're on track, and that's where you can help. This section is completely anonymous so your answers CANNOT be linked to you individually. They also do not have any impact on the hiring decisions we make. Which gender do you identify as? * Select... Is your gender identity the same as the sex you were assigned at birth? * Select... What race/ethnicity do you identify as? * Select... Which of the following best describes your sexual orientation? * Select... How old are you? * Select... What is your highest level of education? * Select... Do you consider yourself disabled (i.e. have a condition that impacts your day to day life for more than 12 months)? * Select... ## Related Videos - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) - [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) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [You can’t hack what you can’t see](https://www.wearedevelopers.com/videos/41-you-can-t-hack-what-you-can-t-see) ## Related Articles - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Software Engineer Salary in The UK](https://www.wearedevelopers.com/magazine/231-software-engineer-salary-in-the-uk) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)