Senior Security Engineer

Senior Security Engineer London ( Hybrid) | Technology & Engineering | Permanent The Role As a Senior Security Engineer at Capco, you'll lead hands-on security engineering delivery for clients across financial services and other complex environments. Depending on the engagement, you'll lead a technical workstream or operate independently as a Principal specialist. Your focus will span Application & Product Security, Cloud & Platform Security and DevSecOps, underpinned by strong security automation.

You'll combine specialist depth with cross-domain judgement, client engagement and secure-by-design engineering.

• Lead the design, implementation and technical assurance of secure solutions across applications, cloud platforms and delivery pipelines; remain hands-on with complex engineering and integration challenges.
• Work directly with clients to understand requirements, lead technical workshops and shape practical security designs, delivery plans and technical proposals.
• Embed security-by-design across applications, APIs, cloud workloads and the secure SDLC through threat modelling, CI/CD controls, SAST, SCA, DAST and container scanning.
• Build and integrate scalable security automation using scripting, APIs, Infrastructure as Code and policy as code; improve control effectiveness and engineering workflows.
• Lead technical workstreams or specialist assignments, assure engineering quality and operational handover, mentor engineers and develop reusable standards and patterns.
• Leverage approved AI-enabled tools and automation to enhance security engineering efficiency and effectiveness, ensuring appropriate human oversight, security guardrails and validation.

Deep implementation expertise in one or more of Application & Product Security, Cloud & Platform Security or DevSecOps , with working knowledge of the other areas.

• Practical experience securing applications, APIs, cloud workloads or engineering pipelines, supported by sound knowledge of threat modelling, vulnerability management and secure SDLC practices.
• Experience with at least one major cloud platform (Azure, AWS or GCP) and cloud-native security principles, including an understanding of IaC , containers and workload identities.
• Strong security automation capability with scripting, APIs and CI/CD tooling, plus experience with IaC or policy as code and integrating security tools into engineering workflows.
• Broad awareness of network and infrastructure security, IAM, monitoring and data-protection controls; able to collaborate with specialists and explain technical trade-offs to clients.
• Strong understanding of security standards and best practices, including ISO 27001, NIST and OWASP, with the ability to translate security requirements into practical engineering controls and solutions. Bonus Points For
• Experience in financial services, energy or other regulated sectors; relevant certifications such as CISSP, CSSLP, CCSP or cloud security credentials.
• Depth across multiple priority engineering domains; experience in software supply-chain or container security, technical presales, or security engineering for AI-enabled systems. Why Join Capco
• Deliver high-impact security engineering solutions for leading financial institutions and other major clients.
• Work in a collaborative, entrepreneurial consulting culture with continuous learning, training and certification opportunities
• Help shape secure digital transformation across financial services and energy.

We offer a competitive, people-first benefits package designed to support every aspect of your life: - Core

Discretionary bonus, competitive pension, health insurance, life insurance and critical illness cover.

• Mental Health: Easy access to CareFirst, Unmind, Aviva consultations, and in-house first aiders.
• Family-Friendly: Maternity, adoption, shared parental leave, plus paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement.
• Family Care: Eight complimentary backup care sessions for emergency childcare or elder care.
• Holiday Flexibility: Five weeks of annual leave with the option to buy or sell holiday days based on your needs.
• Continuous Learning: Minimum 40 hours of training annually through workshops, certifications, and e-learning. You'll also be assigned a Business Coach from Day One to support your professional development.
• Healthcare Access: Convenient online GP services.
• Extra

Wellhub ( Gympass ), travel insurance, Tastecard , season ticket loans, Cycle to

• Work, and dental insurance. Inclusion at Capco We're committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know
• we'll be happy to help. We value each person's unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration
• a mindset that shapes how we work with clients and each other every day. #LI-DNI

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