Security Engineer

Security Engineer | 6 months initially | London | 3 days per week onsite initially, with potential to reduce to 2 days | £750 per day | Inside IR35

We're looking for an experienced Security Engineer to join a large enterprise environment, supporting both secure-by-design initiatives and security platforms.

This is a hands-on role sitting across security architecture, engineering and delivery. You'll work closely with technology teams to build security into projects from the outset, review technical designs, support security assurance activities and help improve the effectiveness of security tooling and platforms.

Key Responsibilities

• Embed secure-by-design principles across technology projects and programmes.

• Engage with delivery teams early to identify and address security requirements, risks and dependencies.

• Review solution designs, architecture documentation and technical proposals from a security perspective.

• Carry out threat modelling and identify risks around data flows, integrations, trust boundaries and third-party services.

• Translate security requirements into practical controls, actions and delivery requirements.

• Provide security assurance throughout the project lifecycle, including readiness and go-live reviews.

• Support the configuration, adoption and ongoing improvement of Microsoft-focused security platforms.

• Act as a technical point of contact for security platform issues, requests and operational queries.

• Troubleshoot platform-related issues and work with Security Operations, engineering teams and vendors where required.

• Support the implementation and onboarding of new security capabilities and tooling.

• Work with third-party security vendors on support cases, upgrades, fixes and new functionality.

• Develop practical security standards, templates, checklists and guidance for technology teams.

• Identify recurring security and platform issues and drive improvements to processes, configurations and controls.

• Work closely with Security Architecture, Security Operations, GRC and wider technology teams to deliver consistent security outcomes.

Key Skills & Experience

• Strong commercial experience as a Security Engineer within a complex enterprise environment.

• Proven experience delivering secure-by-design security outcomes across technology projects.

• Strong understanding of security across applications, infrastructure, cloud, identity and integrations.

• Experience reviewing technical and solution architectures and identifying security risks.

• Strong hands-on experience with Microsoft security technologies, covering areas such as identity, endpoint, cloud, monitoring and data security.

• Experience supporting or configuring enterprise security platforms and tooling.

• Practical experience with security assurance, risk assessment and threat modelling.

• Strong stakeholder management skills, with the ability to work effectively with architects, engineers and delivery teams.

• Experience managing security-related tickets, service requests and operational issues.

• Able to work independently and make an immediate impact in a fast-moving environment.

• Strong written and verbal communication skills, with the ability to turn complex security requirements into practical guidance.

We're looking for someone who is pragmatic, hands-on and delivery focused. You'll be comfortable challenging technical teams where necessary, but equally focused on finding practical solutions rather than creating blockers.

Security Engineer | 6 months initially | London | 3 days per week onsite initially, with potential to reduce to 2 days | £750 per day | Inside IR35

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