Senior Staff Security Engineer

Senior Staff Security Engineer

The Senior Staff Security Engineer owns current and target-state data architectures and reporting while also designing, implementing, and monitoring cloud (AWS/GCP) infrastructure security controls; deploying, securing, configuring, and operating SIEM and other security resources; identifying, triaging, and remediating infrastructure and web vulnerabilities; leading incident triage and external-researcher engagement; mentoring junior staff; and helping shape secure, scalable approaches for AI-enabled tooling, automation, and emerging product capabilities.

Role summary and core responsibilities

• 6+ years of relevant experience
• Candidates must demonstrate proficiency in cloud security, network security, URL filtering, common security frameworks, and CVE lifecycle management
• Practical IaC and scripting for automation
• Strong cross-functional and external communication
• Experience mentoring junior staff

Technical Skills:

• Hands-on cloud security for AWS and GCP: design secure architectures, perform threat modeling, apply platform-native controls, and build and validate secure IaC.
• SIEM ownership and detection engineering: deploy, configure, tune, and maintain SIEM; author and test detection rules and playbooks; integrate data sources; and operate with SLA-driven alerting and incident workflows.
• Vulnerability and incident lifecycle ownership: identify, triage, and remediate infrastructure and web vulnerabilities.
• Drive CVE lifecycle management and patching: perform root cause analysis and measure MTTR and remediation rates.
• Network, web, and endpoint protections: design and manage firewalls, WAFs, cloud network controls, URL and web filtering, with demonstrable operational experience.
• Secure automation and tooling: author automation for detection, alert enrichment, and remediation; build or extend security tooling using scripting or languages such as Python, Go, or Bash.
• Infrastructure as code and secure CI pipelines: implement guardrails and policy-as-code in CI/CD pipelines, perform static IaC scanning, and enforce security baselines before deployment.
• Detection, telemetry, and observability: define logging and telemetry requirements, ensure coverage for critical assets, and validate detection efficacy and alert fidelity.
• Security standards, playbooks, and enforcement: develop, document, and operationalise organisation-wide security standards, runbooks, and playbooks; partner with engineering teams to drive adoption.
• Threat-informed defensive engineering: apply threat modeling and adversary-focused testing to guide controls, detection, and resilient designs.
• AI security and emerging technology risk: help define controls and guardrails for AI-enabled tools, internal automation, and product capabilities; assess risks around data access, model usage, prompt injection, and secure adoption of AI across engineering environments.
• Cross-functional and external communication: communicate clearly with engineering teams, leadership, external researchers, and customers; lead vulnerability disclosure and researcher engagement.
• Mentorship and prioritisation: mentor junior engineers, prioritise security projects based on risk and business impact, and drive continuous improvement of infrastructure security posture.
• Familiarity with frameworks and common weaknesses: working knowledge of CIS, NIST, common security libraries and controls, and typical flaws exploited in infrastructure and web applications.

Skills and qualifications:

• AWS Certified Security
• Google Professional Cloud Security Engineer
• Splunk Certified Admin or Splunk Certified Enterprise Security Admin
• CISSP (Certified Information Systems Security Professional)
• Certified Cloud Security Professional (CCSP)
• Cloud Security Alliance CCSK
• Experience with AI security, AI governance, or securing AI-enabled products and workflows is a strong plus

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