Senior Security Engineer (Detection & Response)
Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Aug 29, 2026. Justworks scores B on the Alion truth index.
Join Justworks, a fast-growing company that simplifies the complexities of running a business. As a Senior Security Engineer (Detection & Response), you will design, build, and maintain the detection logic that powers our platform, conduct proactive threat hunting, and drive continuous improvements across our detection and incident handling workflows. You will collaborate closely with various teams, lead security event and incident handling, build automation and tooling, and explore AI-assisted detection and response capabilities. This position offers a range of benefits, including paid volunteer work, parental leave, work from home opportunities, and extensive learning and development opportunities.
Missions
- Concevoir, construire et maintenir la logique de détection qui alimente la plateforme de l'entreprise, en développant et en affinant les détections à l'aide de la télémétrie.
- Collaborer étroitement avec les équipes IT, d'ingénierie et de sécurité pour identifier les comportements des attaquants et renforcer les défenses.
- Diriger la gestion des événements et des incidents de sécurité, y compris le triage, l'enquête, les conseils en matière de confinement et les améliorations post-incident.
Profil recherché
- Justworks is looking for an experienced security engineer skilled in detection and response, who can help enhance and mature Justworks’ Security- Strong understanding of attacker behaviors, malware techniques, and modern threat landscapes
- Strong communication skills and comfort working cross-functionally in a fast-paced environment
- Hands-on experience with EDR platforms (event analysis, detections, hunting)
- Proficiency with AWS security and logging services (CloudTrail, GuardDuty, IAM, VPC Flow Logs, Lambda, etc.)
- Interest in how AI/ML can enhance detection, hunting, and response workflows
- Experience designing and conducting attack & defend (table-top) exercises
- Demonstrated ability to improve processes, reduce friction, and automate repetitive tasks
- 5+ years of hands-on experience in detection engineering, threat hunting, security event analysis, and incident response