Senior Threat Hunter - Specialist I - Information Security - Paris

We are looking for a Senior Threat Hunter with strong expertise in Python and Jupyter Notebooks to join our Managed Security Services team in Paris.

This role combines advanced threat hunting with engineering capabilities, focusing on building scalable, automated, and repeatable threat hunting frameworks across large datasets in enterprise environments.

Key Responsibilities

• Perform proactive, hypothesis-driven threat hunting aligned to MITRE ATT&CK
• Analyze and investigate security data across endpoint, network, and cloud environments
• Identify indicators of compromise, suspicious activity, and emerging threats
• Develop and maintain Jupyter Notebook-based hunting frameworks
• Build reusable Python modules, APIs, and automation tools
• Design and maintain data pipelines for telemetry and threat intelligence integration
• Automate hunting workflows using orchestration tools (e.g., Azure ML pipelines)
• Apply data normalization, validation, and correlation techniques
• Collaborate with SOC, Threat Intelligence, and Detection Engineering teams
• Produce clear and structured threat hunting reports and findings

• 5+ years of experience in Threat Hunting, Detection Engineering, or Incident Response
• Strong hands-on experience with:
• Python (Pandas preferred)
• Jupyter Notebooks
• Experience working with:
• SIEM / EDR / XDR platforms
• Large-scale security telemetry and data analysis
• Strong understanding of:
• MITRE ATT&CK framework and attacker TTPs
• Windows and Linux operating systems
• Network traffic and log analysis
• Experience in cloud threat hunting (AWS, Azure, GCP)
• Good understanding of:
• CI/CD pipelines, SDLC, and automation practices

• Experience with tools such as Microsoft Sentinel, Defender, CrowdStrike, Cybereason
• Experience building automation for detection validation, rule deployment, or telemetry pipelines
• Relevant certifications such as GIAC, OSCP, or CEH

• Hybrid role based in Paris
• Permanent position
• Collaboration with global teams

threat intelligence,incident response,mitre att&ck,penetration testing,