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Senior Security Research Engineer - Microsoft Defender Experts Team

Costa Rica, San José, San José💼 Full-time🗓 2026-05-13 → 2026-09-26

Core

Design partner for senior leaders of customer security organizations on new cloud detection and response innovations, developing durable detection solutions by investigating security incidents and attackers.

Role type

Senior Security Research Engineer (Strategy & Product Innovation)

Builds

New security service offerings and detection strategies for Microsoft Defender Experts

Domain

Cybersecurity, Cloud Security, Threat Intelligence

Deliverable

production ML models | product features | dashboards & analysis

Required skills

Threat analysis, vulnerability research, anomaly detection, software development lifecycle, large-scale computing, cybersecurity, reverse engineering, digital forensics, incident response, machine learning models, offensive security, exploit development, OSINT, system administration, network administration, cloud administration

Preferred skills

Customer-centric mindset, stakeholder engagement, kill-chain model knowledge, ATT&CK framework, penetration testing, threat intelligence curation, data storytelling, Windows/Linux/Mac/Android/iOS internals, Sentinel data analysis

Technologies

Sentinel, Metasploit, Open Source Intelligence Gathering (OSINT)

Responsibilities

Work with senior leaders of customers' security organizations as design partners on new cloud detection and response innovations; Investigate, analyze, and learn from security researchers, attackers, and real incidents to develop durable detection solutions; Forge new and improve existing partnerships to mature products supporting Defender Experts service offerings; Provide technical leadership and influence the organization.

Seniority

Senior, hands-on IC with strategic influence

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