Senior Security Engineer

The opportunity

We are seeking an experienced Senior Security Engineer (Cloud & SecOps) to join our Information Security team. In this role, you will take ownership of threat detection, response and prevention across our AWS-hosted SaaS platform.

As part of our continued investment in security operations, you will serve as the internal owner of both our Security Information and Event Management (SIEM) platform and our managed Security Operations Centre (SOC). You will define our detection strategy, hold our service provider to the highest standards and lead our response to security incidents. You will also be accountable for the run-time security of our AWS estate.

You will join a small, collaborative team based across London and Wrocław, working alongside our Governance, Risk and Compliance (GRC) function and our Senior Product Security Engineer, who is responsible for security across the software development lifecycle (SDLC) and CI/CD pipeline. You will partner closely with our Engineering, Platform and IT teams and report to the Head of Information Security.

Key responsibilities

Cloud and corporate security

• Own the run-time security posture of our AWS environment, including identity and access management (IAM), organisational guardrails, logging coverage and the remediation of cloud security findings
• Secure our corporate environment, including Google Workspace, endpoints and SaaS applications, partnering with IT to define and uphold identity, access and device security standards

Vulnerability and exposure management

• Lead the infrastructure vulnerability management programme, prioritising remediation on a risk basis and driving delivery with the Platform and IT teams
• Develop and oversee our external attack surface management capability
• Coordinate infrastructure and external penetration testing, from scoping through to tracking remediation to closure

Detection and incident response

• Own the SIEM platform, including log source onboarding, the development and tuning of detection use cases and coverage tracking against the MITRE ATT&CK framework
• Act as the internal owner of the managed SOC relationship, including escalation runbooks, service reviews, triage quality and service level agreements (SLAs)
• Lead security incident response end to end, from triage and containment through to post-incident review and root cause analysis
• Monitor the emerging threat landscape and recommend enhancements to our detection and response capabilities

Automation, reporting and assurance

• Automate repetitive security processes through scripting and infrastructure-as-code
• Deliver operational security metrics that inform risk reporting and key risk indicators (KRIs)
• Support internal audits and client assurance activities by evidencing the operating effectiveness of operational security controls

Skills and experience

• Proven experience in a security operations or cloud security engineering role
• Hands-on SIEM experience, including the design and tuning of detections in addition to alert response
• In-depth knowledge of AWS security services and architecture, including IAM, Organizations and Service Control Policies (SCPs), CloudTrail, GuardDuty, Security Hub, KMS and VPC design
• Experience with container and Kubernetes runtime security, ideally on Amazon EKS
• A track record of leading security incident response within cloud environments
• Experience working with or managing a managed SOC or Managed Detection and Response (MDR) provider
• Proficiency in Python or a comparable scripting language for automation
• Working knowledge of infrastructure-as-code
• The ability to communicate technical risk clearly and concisely to non-technical stakeholders

Desirable

• Experience with detection-as-code practices
• Experience with Security Orchestration, Automation and Response (SOAR) platforms or automated response playbooks
• Experience with Cloud Security Posture Management (CSPM) or Cloud-Native Application Protection Platform (CNAPP) tooling
• Familiarity with financial services regulations and standards, such as the Digital Operational Resilience Act (DORA), ISO 27001 and SOC 2
• Relevant professional certifications, such as AWS Certified Security – Specialty, GCIH, GCIA or GCFA
• Experience applying threat intelligence to inform detection priorities

The reward package

• Competitive salary package aligned with your skills and experience. Reviewed annually
• Annual Performance-based bonus
• Healthcare cashback scheme and private medical insurance
• 4X salary life assurance
• Unlimited annual holiday, because we trust our people to manage their own time off
• Enhanced family leave
• Employee Assistance Programme
• Cycle to Work and Tech Scheme
• 4 Volunteering days off
• Flexible working policy (2 days per week in office)
• Opportunity to work abroad for up to 6 weeks per year
• Personal learning and development opportunities
• Referral bonus if we hire someone great who you’ve recommended to us
• Spot Rewards
• Employee of the Month and Employee of the Year awards