Information Security – Senior Threat Detection & Response Engineer

About the role
A hands-on, individual-contributor role in a lean airline security team. Your core job is to proactively find where we are blind or exposed missing telemetry, missing detections, weak or unvalidated controls across on-prem, endpoint and multicloud (AWS, GCP, Azure) environments, and to close those gaps methodically, with evidence that each one is closed. You also take part in incident response: the gaps you find come from real incidents, and the fixes you build get tested by them.

How you'll work: find → define → fix

• Find. Map current telemetry and detections against MITRE ATT&CK (Navigator/DeTT&CT), including the cloud matrices (IaaS, SaaS, Identity Provider) for AWS, GCP and Azure; run adversary emulation and breach-and-attack-simulation tests; mine incidents, hunts, pentests and threat intel for techniques we couldn't see or stop; audit log-source health and asset coverage.
• Define. Turn each gap into a written item: technique, affected assets, risk, required telemetry, detection logic, mitigation, owner and acceptance test. Prioritise into a single backlog against the threats most relevant to aviation.
• Fix. Onboard and normalise log sources; build detections as code (Sigma as the source of truth, converted to KQL, SPL or Elastic/OpenSearch queries; version-controlled and tested in CI); tune to an agreed false-positive budget; work with platform owners to implement and verify preventive controls (hardening, EDR policy, identity and conditional access, cloud guardrails); re-test to prove closure; update the coverage map.

What you'll do

• Own detection and visibility across AWS, GCP and Azure control planes and identity: audit-log ingestion, native security-service alerts, and misconfiguration/exposure findings feeding the gap backlog.
• Run purple-team exercises with red-team/pentest partners and convert findings into detections and mitigations.
• Hunt proactively for techniques the coverage map shows as uncovered.
• Lead containment, eradication and recovery during incidents; perform forensic analysis; feed lessons straight back into the gap backlog.
• Automate enrichment, triage and response (SOAR, Python, PowerShell) where it removes manual toil.
• Use LLM assistants and agentic coding tools (Claude Code, OpenCode) to speed up rule authoring, backend conversion, test-case generation, parser/automation code and triage, validating outputs before anything reaches production.
• Produce coverage and performance metrics directly from the work (ATT&CK coverage %, gap closure rate, validation pass rate, MTTD/MTTR) for leadership.

Must have

• 6+ years hands-on in detection engineering, senior SOC analyst or incident response.
• Deep hands-on SIEM skills: Microsoft Sentinel, Splunk, Elastic (ELK) or OpenSearch, including their query languages (KQL, SPL, ES|QL/Lucene).
• Hands-on EDR: Microsoft Defender, SentinelOne or CrowdStrike, including their hunting query interfaces and custom detection rules.
• Sigma, including converting and testing rules against each backend.
• Multicloud security across AWS, GCP and Azure: audit and security telemetry (CloudTrail/GuardDuty, Cloud Audit Logs/Security Command Center, Azure Activity + Entra ID logs/Defender for Cloud), IAM and identity attack paths, and cloud-specific detection use cases.
• Proven track record of finding and closing detection or visibility gaps, with examples of your methodology.
• Practical MITRE ATT&CK use for coverage assessment, not just tagging.
• Adversary emulation / breach-and-attack-simulation experience.
• Strong Python or PowerShell; comfortable with Git and CI for detection-as-code.
• Effective daily use of LLM assistants and agentic coding tools (e.g., Claude Code, OpenCode) for detection-as-code, automation and analysis, with critical validation of output and within approved data-handling boundaries.
• Clear communication under incident pressure.

Nice to have

• Aviation, logistics or other regulated-sector experience; NIS2 / EASA Part-IS.
• SOAR platform experience.
• Elastic Security detection rules and OpenSearch Security Analytics (Sigma-native).
• Container/Kubernetes telemetry (EKS, GKE, AKS) and CSPM/CNAPP tooling.
• Certifications: GDAT, GCIH, GCFA, GCIA, AZ-500, AWS Security Specialty, Google Professional Cloud Security Engineer.
• Threat modelling / adversary profiling; exposure-management or attack-path tooling.
• AI security: MITRE ATLAS, OWASP Top 10 for LLM Applications; agentic security automation with LLM agents.

Benefits & form of employment

Contract of employment (permanent contract after trial period)

• Staff travel benefits from day one
• Multisport card
• Private health care
• Group insurance scheme

Other benefits:

• Possibility of taking part in trainings and certifications
• Great chance to meet your colleagues in other offices
• Annual events (i.e. St. Patrick’s Day 🍀)
• Regular social meetings 🍻
• Paid referral system
• New office building surrounded by great dinettes right in the city centre 🌆