JSOC - Senior Detection Engineer (Rosario)

Senior Detection Engineer Questrade Financial Group (QFG) offers innovative fintech solutions and is looking for a Senior Detection Engineer to join our security team.

Benefits
- Health & wellbeing resources and programs
- Paid vacation, personal, and sick days for work-life balance
- Competitive compensation and benefits packages
- Career growth and development opportunities
- Opportunities to contribute to community causes
- Work with diverse team members in an inclusive and collaborative environment

Responsibilities
- Own the quality and effectiveness of the detection portfolio – create, tune, validate, and retire alerts that drive organizational security outcomes.
- Author, test, and deploy detection rules aligned to MITRE ATT&CK; coverage gaps.
- Maintain the detection portfolio: track coverage, false‑positive rates, alert fidelity, and relevance.
- Validate alerts through purple‑team exercises and real‑world scenario testing.
- Tune detection logic to reduce false‑positive rates and improve signal‑to‑noise ratio.
- Document detection rationale, expected behavior, and run‑book references for each alert.
- Build and maintain alert severity frameworks and prioritization logic.
- Retire stale or redundant detections with documented justification and communication.
- Produce monthly detection metrics: coverage by ATT&CK; tactic, false‑positive trends, new vs. retired rules.
- Perform threat modeling to identify gaps in current detection coverage.
- Collaborate with SIEM Engineer on platform optimization and detection rule infrastructure.
- Work with CTI Specialists to translate threat intelligence into detection requirements.
- Conduct log analysis and data exploration to validate detection logic and identify edge cases.
- Author SIGMA rules to ensure detection portability and cross‑platform compatibility.
- Participate in alert tuning and optimization based on SOC analyst feedback and operational experience.
- Maintain runbooks and escalation procedures aligned wi Postúlate en Kit Empleo: kitempleo.com.ar/empleo/pxi2g