SIEM Engineer / Use Case Engineer - Contractor (Manager I - Information Security)

Overview

CyberProof – A UST Company. CyberProof, part of the UST Global family, is a world‑leading cyber security services and platform company. Our mission is simple: help customers detect, prioritize, and respond to threats faster and smarter. We build modern, automated, secure digital ecosystems that empower global enterprises to stay ahead of emerging threats.

Role Description

SIEM Engineer / Use Case Engineer

Contractor (Paris, France)

6 month contract

CyberProof – A UST Company. CyberProof is a world‑leading cyber security services and platform company within the UST Global family. We are expanding our Security Operations capability in Europe and seeking an experienced SIEM Engineer / Use Case Engineer to join our Use Case Management function, supporting key international customers and contributing to continuous threat detection innovation.

Role Overview

As a SIEM Engineer / Use Case Engineer, you will play a key role in the design, delivery, and optimization of next‑generation SIEM capabilities across platforms such as Sentinel, QRadar, and Splunk. You will work closely with global SOC teams, threat experts, and customer stakeholders to develop advanced detection content, improve visibility, and strengthen SIEM performance. This is a contractor position based in Paris, working with a multicultural CyberProof / UST Security Operations environment.

Key Responsibilities

• Advise customers on SIEM best practices, architecture recommendations, and platform usage (Sentinel / QRadar / Splunk).
• Provide consultative guidance on security principles, threat detection strategies, and operational improvements.
• Design, develop, and document SIEM use cases, detection logic, correlation rules, dashboards and threat‑focused content.
• Deploy and configure SIEM solutions aligned with vendor recommendations and industry best practices.
• Support customers with SIEM sizing, architecture planning, and technical workshops.
• Guide the integration of in‑scope log sources and ensure successful onboarding into the SIEM.
• Verify log collection and data quality, resolve ingestion gaps, and maintain log source reliability.
• Build and maintain parsers/DSMs for required log sources.
• Serve as a subject‑matter expert for SIEM technologies and detection content development.

What You Will Bring

• Minimum of 2+ years’ hands‑on experience in SIEM engineering or use‑case/detection content development.
• Practical experience with at least one major SIEM—Azure Sentinel, IBM QRadar, or Splunk (recent experience required).
• Proficiency in writing detection logic:
  • Sentinel KQL
  • QRadar AQL
  • Splunk SPL
• Strong understanding of attack vectors, threat behaviours, and defensive controls.
• Experience identifying, configuring and validating SIEM Engineer / Use Case Engineer
• Bachelor's degree in Information Security, Computer Science or equivalent experience.
• Strong analytical, troubleshooting and problem‑solving skills.
• Excellent communication and collaboration skills in a cross‑functional, global environment.
• Self‑starter; able to work independently and take ownership of deliverables.

Preferred Qualifications

• SIEM vendor certifications (Sentinel, QRadar, Splunk Administrator).
• Experience creating or maintaining custom parsers/DSMs.
• Exposure to enterprise SOC environments, MDR models or threat‑led detection frameworks.
• Experience with cloud‑native SIEM capabilities and log analytics pipelines.

Why CyberProof?

CyberProof is trusted by some of the world’s largest enterprises to secure their digital transformation initiatives. As part of UST, you will join a collaborative, innovative, and globally connected cybersecurity community. This is an opportunity to shape threat detection strategies, influence SIEM evolution, and work with cutting‑edge SecOps platforms in a high‑impact role.

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Skills

siem, sentinel, siem use case development, log source configuration