Senior Security Analyst

Department: Information Security / Security Operations Center (SOC)

Designation: L2 Information Security

Reporting To: SOC Manager

Experience: Minimum 5 years in a SOC / Security Operations environment

Work Pattern: Rotating shift model (24x7)

Work Location: Ambattur, Chennai

Role:

We are seeking an experienced Security Analyst (Tier 2) to join our Security Operations Center (SOC) team. The successful candidate will serve as a subject matter expert in enterprise security monitoring, responsible for the detection, investigation, and response to cybersecurity incidents and threats across a large-scale, complex enterprise environment.

Responsibilities:

• Manage and maintain the SIEM platform ensuring log ingestion health, data source onboarding, parser validation, and rule accuracy.
• Lead and coordinate Tier 2 incident response activities containing, eradicating, and recovering from security incidents in line with the SOC IR playbook and defined SLAs.
• Document all investigation steps, findings, evidence, and actions taken accurately within the ITSM / ticketing system (e.g. ServiceNow, Jira).
• Perform root cause analysis (RCA) on significant incidents and contribute lessons learned to post-incident review reports.
• Develop, tune, and maintain detection rules, correlation rules, and dashboards to improve coverage across the MITRE ATT&CK framework.
• Identify log source gaps and work with IT and infrastructure teams to onboard missing data sources into the SIEM.
• Automate repetitive triage tasks through SOAR playbooks (e.g. Cortex XSOAR, Sentinel Logic Apps) to improve analyst efficiency and reduce MTTD/MTTR.
• Monitor and investigate endpoint telemetry using EDR platforms (e.g. CrowdStrike Falcon, Microsoft Defender for Endpoint, SentinelOne) to detect malicious activity including malware, ransomware, and living off-the-land (LotL) attacks.
• Analyse firewall logs and network traffic data (Palo Alto, FortiGate, Cisco ASA, Check Point) to identify suspicious traffic patterns, policy violations, and network-based threats.
• Investigate alerts originating from IDS/IPS systems, web proxies, DNS security platforms, and network detection and response (NDR) solutions.
• Consume and operationalize threat intelligence feeds (commercial and open-source) triaging IOCs, enriching alerts, and updating blocking lists in SIEM, firewall, and EDR platforms.
• Track active threat campaigns, adversary groups, and CVEs relevant to the organization’s sector and technology stack.
• Collaborate with IT, infrastructure, and engineering teams on threat remediation

Qualification:

• Any degree in information technology specialization in Cyber Security/ Forensic, computer science, Information Technology
• 5 to 7 years of experience working in a 24x7 Security Operation Center (SOC) environment.
• Hands-on experience working with any of the SIEM tools (Splunk, Microsoft Sentinel, or QRadar)
• EDR expertise (CrowdStrike Falcon, Microsoft Defender, SentinelOne, or Cortex XDR)
• Relevant certifications such as CEH, CHFI, COMPTIA +, GCIA, GCIH, Splunk, Elastic, Microsoft Sentinel, QRadar, or equivalent.