Job Purpose

The SOC L3 acts as the Senior technical escalation point within the SOC, leading threat hunting, advanced incident investigations, security engineering improvements, and strategic cyber defence initiatives. Protect multi tenant GPU cloud with defense in depth, ensuring zero trust, auditability, and regulatory alignment.

Role Description

Key Responsibilities

Lead investigation of sophisticated cyber attacks and advanced persistent threats (APTs).
Perform proactive threat hunting across enterprise environments.
Develop advanced detection engineering use cases.
Design and optimize SIEM, SOAR, XDR, and cloud security monitoring capabilities.
Conduct forensic investigations across endpoints, networks, cloud, and identity platforms.
Develop incident response playbooks and automation workflows.
Lead post-incident reviews and lessons-learned sessions.
Provide security recommendations to architecture and engineering teams.
Mentor SOC L1/L2 analysts and support career development.
Coordinate with Threat Intelligence and Red Team functions.
Support security audits,



compliance, and executive reporting.
ON-CALL Support for L2/L1 support team.
Implementation

oEnforce IAM/RBAC, least privilege, and network micro segmentation; secrets/KMS integration.

oDefine secure baselines for OS, containers, CUDA drivers, and platform services; supply chain controls (image signing/SBOM).

oImplement and management experience of cloud network security controls such as security groups, firewalls, WAF, DDoS, micro-segmentation, EDR, DLP, PIM/PAM and secure connectivity etc

Operations

oContinuous vulnerability management, patch cadence, threat detection (EDR/XDR), and audit log integrity.

oPeriodic access reviews, key rotation, and compliance evidence packs.

Reliability & Incident

oIncident response (containment/forensics/eradication); purple team exercises; tabletop drills.

Data Protection

oEncryption in transit/at rest, tenant isolation boundaries, data retention, legal h

📌 Sr. SOC Engineer (Chennai)
🏢 Larsen and Toubro
📍 Chennai