Lead Security Engineer

🔒 Confidential Employer
Posted 8 May 2026
LOCATION
London
TYPE
Full-time
LEVEL
Mid-Senior level
CATEGORY
Cyber Security
This role is not offered with visa sponsorship, though the employer is a licensed UK sponsor

SKILLS

Security Architecture Incident Response Threat Modeling AWS Infrastructure as Code Secure Coding Programming

FULL DESCRIPTION

Lead Security Engineer

[Employer hidden — sign up to reveal] - London, UK - Hybrid

We’re looking for a Lead Security Engineer to drive security initiatives that embed secure-by-design principles across all platforms and products.

Your new adventure:

  • Deliver proactive, secure-by-default protections across the cloud, CI/CD pipelines, and applications by creating tooling and guardrails
  • Lead design reviews and threat modeling for high-impact features to identify risks early and ensure mitigations are integrated into the design phase
  • Evolve detection and Incident Response capabilities by tuning signals and implementing automated responders to reduce manual toil
  • Manage notable security incidents and tabletop exercises, ensuring runbooks and stakeholder communications are improved after each event
  • Mentor engineers and team members to uplevel secure coding practices and foster a security-positive culture across the organization
  • Monitor emerging security trends, vulnerabilities, and technologies, specifically AI based risks to keep the security posture current
  • Partner with product and platform teams to drive security outcomes and reduce risk while maintaining business velocity

Does this sound like you?

  • 5+ years of broad, hands-on experience across multiple security domains with strong software engineering fundamentals
  • Proficiency in at least one programming language with the ability to write production-quality code
  • Proven track record of partnering across functions to drive company-wide security outcomes
  • Proficiency in Cloud Platforms (AWS) and Infrastructure as Code (IaC)
  • Ability to think like both an attacker and a defender to drive improvements in prevention and detection
  • Strong written and verbal communication skills, with the ability to explain complex security issues to non-technical audiences

Nice to have:

  • Experience with Agentic Coding (e.g., Claude, Codex)
  • Experience with Orchestration tools (e.g., N8N)
  • Familiarity with Central Logging and Monitoring (e.g., Wazuh or other SIEM technologies)
  • Experience with Kubernetes and Container Orchestration
  • Knowledge of EDR tools like CrowdStrike or SentinelOne

Why [Employer hidden — sign up to reveal]?

  • People-first culture – Be part of a team that values authenticity, champions collaboration, and supports each other—no egos, just teamwork. Work alongside top talent from around the world in an inclusive space where different perspectives fuel our best ideas. Everyone is welcome
  • Unlock potential – Push boundaries, take ownership, and experiment with the latest technologies as we enhance our AI First Vision. We empower bold ideas that drive real change
  • We’ve got you – Your well-being matters. Enjoy flexible hours, wellness perks and SWAG. Think performance-based bonuses, 28 paid leave days, well-being days, compassionate leave, and even pawternal leave—because we take care of ourselves and our people
  • Grow with us – Whether through mentorship, coaching, or internal mobility, we invest in helping you unlock your potential. Open, honest feedback and clear communication are at our core. We grow together through trust and accountability
  • Packed with purpose – Help 100,000+ small and medium-sized businesses grow and succeed while doing meaningful, customer-driven work

Based on this role's access to certain data, [Employer hidden — sign up to reveal] might conduct a pre-employment background investigation in conjunction with your application for employment with our company. Such data will be handled in accordance with [Employer hidden — sign up to reveal]'s Privacy Policy for Recruitment.

[Employer hidden — sign up to reveal] is an equal opportunity employer. We encourage diversity in the workplace regardless of age, gender, race, religion, disability, sexual orientation, gender identity or veteran status.

Please note that for this role we’re currently unable to offer relocation assistance or visa sponsorship.

Application Instructions

If this is something for you, send us your resume (in English) or a link to your LinkedIn profile and please add why we should pay extra attention to your application.

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