Senior Security Engineer - 12 Months FTC
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.
Accountabilities
- 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.
Qualifications, Skills and Experience
- Practical experience designing and implementing security controls for infrastructure, applications and platforms. Must have operational experience securing AI, MS azure preferred.
- 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.
Pay.UK Behaviours
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
Inclusivity
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.
Who we are
Pay.UK is the recognised operator and standards body for the UK's interbank retail payment systems. We provide the infrastructure and services that millions of people and businesses rely on every day, including Bacs, Faster Payments and the Image Clearing System for cheques, the Current Account Switch Service and Confirmation of Payee. Together, these services help keep money moving safely, securely and reliably across the UK and play an important role in supporting the economy.
In 2025, the UK's retail payment systems processed more than 12.5 billion transactions worth over £11 trillion. Since its launch in 2013, the Current Account Switch Service has successfully helped consumers and businesses switch more than 12 million current accounts. These services help people receive their salaries, pay their bills, make payments and manage their finances with confidence.
Our purpose is to provide the trusted infrastructure, standards and services that underpin UK retail payments. We deliver safe, resilient and efficient payment systems while working collaboratively with industry, regulators and stakeholders to strengthen resilience, tackle fraud, improve access and support innovation across the payments landscape. As the ecosystem evolves, we are continuing to develop our capabilities in areas such as data and AI, enhancing operational insight and helping to build a modern, trusted payments ecosystem.
Learn more about life at Pay.UK by hearing what employees have to say, click here to view videos.
Benefits & additional information
- 12% Non-contributory pension
- Discretionary annual bonus
- 30 days annual leave (excluding bank holidays)
- Private medical insurance, life assurance, income protection, health cash plan, dental insurance, Bupa medicals etc
- Employee assistance programme
- Cycle to Work Scheme
- Season ticket loan
- Annual fitness subsidy of up to £500 per annum
- Working from home policy - minimum 40% in the office (eg. 2 days in the office over a 5 day working week)
Please note: