Head of Security Engineering – Application Security & Security Testing

Head of Security Engineering – Application Security & Security Testing

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Tesco Technology’s Security Engineering function is responsible for proactively identifying and mitigating risks across our technology estate. As Head of Security Engineering – Application Security & Testing, you will lead a multi‑disciplinary function that spans vulnerability management, application security engineering, and adversarial testing. You will be accountable for delivering full‑stack security assurance—from code to infrastructure—through a blend of engineering innovation and operational excellence.

• Lead three Security Engineering Managers and their teams (approx. 20+ engineers), plus a Principal Security Engineer/Architect.
• Foster collaboration across teams focused on external attack surface management and bug bounty operations.
• Application security engineering (SAST, SCA, GenAI solutions, ASPM, threat modelling).
• Penetration testing and adversarial simulation (red/purple team strategy).
• Develop talent, coach leaders, and build succession plans for long‑term capability growth.
• Oversee the design, deployment, and operation of tools and solutions that identify vulnerabilities across the full stack—code, applications, infrastructure, packages, and external assets.
• Ensure robust security testing capabilities are in place to support business projects and strategic initiatives.
• Drive continuous improvement in testing methodologies, coverage, and automation.
• Translate strategic goals into actionable plans under Tesco’s Tech Excellence programme.
• Monitor delivery progress, operational metrics, and team performance.
• Ensure alignment with broader security and technology objectives.
• Work closely with peers including the Heads of Security Partnerships, Cyber Defence, and Platform Security Architecture.
• Partner with Product and Programme teams to embed security into delivery pipelines.
• Act as a key point of contact for senior stakeholders across Tesco Technology.

• Proven experience leading large‑scale security engineering functions.
• Deep technical expertise in vulnerability management, application security, and adversarial testing.
• Strong understanding of secure development practices and modern engineering tooling.
• Experience with ASPM platforms, threat modelling, and GenAI‑driven security solutions.
• Ability to balance strategic thinking with hands‑on execution.
• Excellent communication and stakeholder engagement skills.
• Familiarity with operational metrics and performance tracking.

We’re all about the little helps. That’s why we make sure our Tesco colleague benefits package takes care of you – both in and out of work.

• Annual bonus scheme of up to 45% of base salary
• Car allowance of £7,320 per annum
• Holiday starting at 25 days plus a personal day (plus Bank holidays)
• Private medical insurance
• Retirement savings plan – save between 6% – 10% and Tesco will contribute 1.5 times this amount
• 26 weeks maternity and adoption leave (after 1 year’s service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay; we also offer 6 weeks fully paid paternity leave

Our vision at Tesco is to become every customer’s favourite way to shop, whether they are at home or out on the move. Our core purpose is ‘Serving our customers, communities and planet a little better every day’. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet.

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. We celebrate diversity and recognise the value and opportunity it brings. We’re committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We’re a Disability Confident Leader and fully inclusive and accessible recruitment process.

For further information on the accessibility support we can offer, please .

We’re a big business and we can offer a range of diverse full‑time & part‑time working patterns across many business areas, combining office and remote working. Our offices remain where we connect, collaborate and innovate. Everyone is welcome at Tesco.

Seniority level:
Executive |

Employment type:

Full‑time | Job function:
Engineering and Information Technology | Industry: Retail