Company: TCS
Skill : SIEM Engineering Specialist
Experience: 6 to 10 years
Location : Chennai

Job Description
- Design and maintain SIEM architecture across XSIAM, Sentinel and related log management platforms.
- Lead log source onboarding, parser development, field mapping, normalization, enrichment and data validation.
- Create and maintain correlation rules, detection use cases, dashboards and compliance reporting content.
- Define log source standards, naming conventions, parsing requirements, retention strategy and ingestion control.
- Monitor SIEM platform health, ingestion latency, EPS/GB volume, license utilization, parser errors and failed data sources.
- Align detection coverage to MITRE ATT&CK;, threat intelligence requirements, regulatory controls and business-critical assets.
- Manage change control, testing,



content promotion, rollback and documentation for SIEM engineering releases.
- Mentor SOC analysts on query development, log interpretation and investigation workflows.

Required Technical Skills
- SIEM architecture, data onboarding, parsing, normalization and correlation engineering.
- Expertise in XSIAM, Microsoft Sentinel, KQL, XQL and log source troubleshooting.
- Cloud, endpoint, identity, network, email, web proxy and firewall telemetry understanding.
- Detection engineering, MITRE ATT&CK; mapping and false-positive reduction.
- Scripting with Python or PowerShell, REST API integration and automation support.

📌 SIEM Engineering Specialist (Chennai)
🏢 Tata Consultancy Services
📍 Chennai