Hybrid Senior Security Engineer – Defence

Posted last month

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About the role

  • Triage, scope, contain, and eradicate across cloud, SaaS, identity, and endpoint; maintain runbooks, evidence, and concise stakeholder updates
  • Hypothesis/ATT&CK-driven hunts; baseline behavior; author/tune detections (e.g. Zeek, YARA, etc.); automate workflows (Python/PowerShell/SOAR)
  • Transform IOCs/TTPs into hunts & detections; track actors/campaigns, produce short intel notes, and drive requirements; curate indicators in Malware Information Sharing Platform & Threat Sharing/OpenCTI where applicable
  • Partner with platform/IAM on hardening (logging/retention, least privilege, secrets/key lifecycle)
  • Contribute post-incident improvements and metrics.

Requirements

  • 3–6+ years in IR/CSIRT with hands-on threat intel and threat hunting experience. Deep OS knowledge: Windows, macOS, Linux internals/artifacts and endpoint telemetry
  • Understanding of networks & firewalls: TCP/IP, UDP, ICMP, HTTP/S, SMTP, DNS; packet/flow analysis; firewall/WAF/proxy rule review. SaaS security: Okta/Entra ID/Google Workspace, Salesforce, Slack, GitHub (audit, auth, OAuth investigations)
  • Cloud IR: AWS/Azure/GCP audit sources and identity/OAuth pivots
  • Tooling: EDR (CrowdStrike/SentinelOne/Defender), SIEM (Splunk/Elastic/Chronicle)
  • Detection & Automation: Zeek/YARA/SQL; Bash/Python/PowerShell
  • Understanding in container and exposure to Kubernetes and Docker.
  • Proven experience in HIPAA and SOC 2 Type II environments.
  • Excellent English
  • Interpersonal skills: clear, structured communicator for technical and executive audiences. Calm, decisive leadership under pressure; ownership and follow-through. Customer-minded; explains risk/trade-offs and shares knowledge

Benefits

  • Amazing working space with a running track on its roof
  • Flexible time off, 5 weeks of vacation, and 5 annual sick days
  • 4% employer supplemental pension monthly contribution
  • Private medical care for employee and spouse with Program Health Plus
  • Life insurance at 2x annual salary
  • 5.000 CZK monthly allowance for meal vouchers, flexipasses and other personal expenses
  • 16 weeks of annual top up maternity leave pay or 8 weeks of fully paid paternity leave
  • Opportunity to be part of company success via the RSU program
  • Diversity and inclusion programs that promote employee resource groups like OWN+ (Outreach Women's Network), Adelante (Latinx community), OBX (Outreach Black Connection), Mosaic (AAPI community), Pride (LGBTQIA+), Gender+, Disability Community, and Veterans/Military
  • Employee referral bonuses to encourage the addition of great new people to the team
  • Fun company and team outings because we play just as hard as we work

Job title

Senior Security Engineer – Defence

Job type

Experience level

Senior

Salary

Not specified

Degree requirement

No Education Requirement

Location requirements

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