Senior Detection Engineer: AI-Driven Cyber Defense

Tesco UK; Digswell; Hybrid; GBP 80,000 - 120,000; Full time

Job summary

Tesco is seeking a Senior Security Engineer to lead the design of security‑first infrastructure within the Detection Engineering team. You will translate threat signals into resilient, automated capabilities across Tesco's retail ecosystem.

The role blends deep engineering leadership with a customer‑first mindset to prevent disruption and safeguard trust. You will mentor engineers, drive secure development practices, and explore AI-assisted detection improvements while collaborating with

Qualifications

• Experience delivering security-first infrastructure and resilient automation.
• Ability to translate threat signals into testable detections and automated capabilities.
• Proven track record mentoring engineers and shaping engineering practice.
• Experience with secure development practices, testing and code quality.
• Familiarity with threat intelligence, incident response, and security orchestration.

Responsibilities

• Design, build and deploy high‑reliability security capabilities that reduce risk to services.
• Lead secure, test‑driven engineering with automated testing and peer review.
• Coach junior engineers and promote modern development practices.
• Pilot AI-assisted approaches to improve detection lifecycle efficiency and quality.
• Collaborate with security operations, platform teams and product stakeholders to deliver integrated defenses.

Skills

Security engineering

Threat detection

Automation & SRE

Mentoring & leadership

Secure-by-design thinking

Tools

GitHub

Jira

Zendesk

xMatters

Job description

Tesco is seeking a Senior Security Engineer to lead the design of security‑first infrastructure within the Detection Engineering team. You will translate threat signals into resilient, automated capabilities across Tesco's retail ecosystem.

The role blends deep engineering leadership with a customer‑first mindset to prevent disruption and safeguard trust. You will mentor engineers, drive secure development practices, and explore AI-assisted detection improvements while collaborating with