Senior SOC Analyst - Cybersecurity Incident Response & Continuous Improvement

IDEMIA; France; Sur place; EUR 50 000 - 70 000; Plein temps

Résumé du poste

A leading technology provider is seeking a Senior SOC Analyst to detect, analyze, and respond to cybersecurity incidents globally. You will oversee incident response and improve SOC capabilities while contributing to a team working in a 24/7 environment. The ideal candidate has 3-7 years in SOC operations, experience with EDR/SIEM platforms, and strong analytical skills. Join us to shape a unique career while ensuring safety in digital transactions.

Qualifications

• 3-7 years of experience in SOC operations or incident response.
• Proven experience with Cortex XSIAM or similar platforms.
• Strong knowledge of cybersecurity frameworks.
• Experience in handling high-impact incidents.

Responsabilités

• Monitor and triage security alerts from multiple sources.
• Lead complex incident investigations, including APT scenarios.
• Perform in-depth forensic analysis on endpoints and network traffic.
• Drive external MSSPs for timely support during investigations.
• Contribute to post-incident reviews and corrective actions.

Connaissances

SOC operations

Incident response

Cortex XSIAM

Cybersecurity frameworks

Scripting (Python, PowerShell)

Log analysis

Threat hunting

Root cause analysis

Formation

Bachelor's or Master's degree in Cybersecurity or related field

Outils

EDR/SIEM/SOAR platforms

Description du poste

Overview

IDEMIA Secure Transactions, a division of IDEMIA Group, is the leading technology provider making it safer and easier to pay and connect. With unmatched expertise in cryptography and credential issuance, IST is trusted by over 2,000 financial institutions, mobile operators, automotive manufacturers, and IoT providers worldwide. Every day, IST secures billions of essential transactions, ensuring the highest levels of data protection and convenience.

Purpose
As a Senior SOC Analyst, you will play a key role in detecting, analyzing, and responding to cybersecurity incidents across IDEMIA's global environments (Office, R&D, Production, Cloud). You will also dedicate some time to improving detection, response, and automation capabilities, helping evolve our SOC into a proactive, automation-driven defense center.

Key Missions

Incident Detection & Response

• Monitor and triage security alerts from multiple sources including Cortex XSIAM, SIEM, EDR, and SOAR platforms, ensuring accurate prioritization and response.
• Lead complex incident investigations, including advanced persistent threats (APT), lateral movement, privilege escalation, and data exfiltration scenarios.
• Perform in-depth forensic analysis on endpoints, logs, and network traffic to identify root causes and attack vectors.
• Correlate multi-source telemetry (e.g., endpoint, cloud, identity, email) to reconstruct attack timelines and identify impacted assets.
• Coordinate incident response activities with internal stakeholders, including IT, business units, and legal/compliance teams.
• Drive and oversee external MSSPs (SOC, CTI, web monitoring, and third-party forensic providers) to ensure timely, high-quality support during investigations and threat monitoring.
• Ensure alignment and escalation processes between internal teams and MSSPs are well-defined, efficient, and continuously improved.
• Document and communicate incident findings, including impact assessments, containment actions, and lessons learned.
• Contribute to post-incident reviews and ensure implementation of corrective actions and detection improvements.

Continuous Improvement and projects

• Lead technical initiatives to enhance SOC capabilities, including development of advanced detection rules, enrichment pipelines, and automated response playbooks.
• Develop and refine detection logic using behavioral analytics, threat intelligence, and MITRE ATT&CK mapping.
• Drive end-to-end projects to optimize incident response workflows using Cortex XSIAM ensuring measurable improvements in response time and accuracy.
• Design and implement integrations between SOC tools (e.g., SIEM, EDR, CTI platforms, SIRP) to improve alert workflow and reduce latency.
• Conduct regular gap analyses on detection coverage and propose technical solutions to address blind spots across cloud, endpoint, and network layers.
• Develop and execute threat hunting campaigns based on MITRE ATT&CK and real-world threat intelligence, with documented hypotheses, findings, and remediation actions.
• Lead proof-of-concept (PoC) evaluations for new security technologies and orchestrators, including performance benchmarking and operational impact assessments.
• Automate repetitive SOC tasks using scripting (e.g., Python, PowerShell) and SOAR workflows to improve analyst efficiency and reduce MTTR.
• Work closely with business teams, IT, and project managers to align SOC improvements with operational needs, project timelines, and risk management priorities.
• Maintain technical documentation and change logs for all improvement initiatives, ensuring traceability and knowledge transfer across the team.

Profile & Other Information

Required Skills & Experience

• 3-7 years of experience in SOC operations or incident response.
• Proven experience with Cortex XSIAM, or strong hands-on with Cortex XDR/XSOAR, or equivalent EDR/SIEM/SOAR platforms.
• Strong knowledge of cybersecurity frameworks (e.g., MITRE ATT&CK, NIST).
• Experience in handling high-impact or rare incidents.
• Proficiency in log analysis, threat hunting, and root cause analysis.
• Familiarity with scripting (Python, PowerShell) and automation.

Qualifications

• Bachelor's or Master's degree in Cybersecurity, Computer Science, or related field (or equivalent experience).
• Relevant certifications (e.g., CEH, GCIA, GCIH, CySA+, CISSP, PCSAE) are a plus.

Scope & Conditions

• Geographical Scope: Global
• Work Schedule: 24/7 team with follow-the-sun model; on-call duty required during weekends.
• Language: Fluent in English, Native in French

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At IST, we believe in an inclusive environment where every talent can thrive. We welcome applicants from all backgrounds, identities, and abilities. If you require any accommodation during the process, let us know.

Join us to shape a career as unique as you are, where every day brings a new challenge and a new opportunity to learn.