CSIRT Analyst_Security Technician

Fujitsu Limited; Chennai District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Fujitsu is seeking a CSIRT Analyst to detect, analyze, and contain cybersecurity incidents across its IT landscape, including on-prem and cloud environments. You will lead investigations, coordinate with SOC and infrastructure teams, and drive improvements in detection and response capabilities.

Ideal candidates have 5+ years in cybersecurity, hands-on malware analysis, and strong experience with MITRE ATT&CK, SIEM platforms, and threat hunting.

Qualifications

• 5+ years of cybersecurity experience.
• Experience leading major security incidents and deep investigations.
• Experience handling malware, phishing, endpoint compromise, and network-based incidents.
• Strong knowledge of threat intelligence, threat hunting, and incident coordination.

Responsibilities

• Detect, analyze, and respond to cybersecurity incidents across systems, apps, networks, and cloud.
• Coordinate with SOC, Infra, and business teams to minimize impact.
• Develop and refine incident detection use cases and playbooks.
• Prepare incident reports and post-incident reviews.
• Track incident trends and response metrics.

Skills

Incident Response

SIEM Platforms

Network Security Analysis

MITRE ATT&CK

Malware Analysis

Windows/Linux Security

Log Analysis

Scripting (PowerShell)

Python

Education

GCFA / GCFE

CHFI

CISSP

Security+

Microsoft Security Certifications

CEH

Tools

Microsoft Sentinel

Splunk

PowerShell

Python

Bash

Job description

Location Flexibility: Multiple Locations in Country

Posting Start Date: 9/25/26

At Fujitsu, our purpose is to make the world more sustainable by building trust in society through innovation. Founded in Japan in 1935, Fujitsu has been a pioneer in technology and innovation for decades. Today, as a world-leading digital transformation partner, we are committed to transforming business and society in the digital age.

With approximately 130,000 employees across over 50 countries, Fujitsu offers a broad range of products, services, and solutions. We collaborate with our customers to co-create solutions that drive enterprise-wide digitalization while actively working to address social issues and contribute to the United Nations Sustainable Development Goals (SDGs).

Job Summary

The CSIRT Analyst is responsible for detecting, analyzing, investigating, containing, eradicating, and recovering from cybersecurity incidents affecting the organization's systems, applications, networks, cloud environments, and information assets. The role requires close collaboration with SOC teams, infrastructure teams, application owners, and business stakeholders to minimize business impact and improve the organization's security posture. Responsibilities align with the CSIRT lifecycle, including Preparation, Detection & Analysis, Containment, Eradication & Recovery, and Post-Incident Activities.

Key Responsibilities

Incident Response & Handling

• Monitor, validate, and investigate security incidents escalated from SOC and other sources.
• Perform incident triage, classification, prioritization, and impact assessment.
• Lead technical investigations and coordinate incident response activities.
• Execute containment, eradication, and recovery activities.
• Track incidents through their entire lifecycle until closure.
• Ensure incidents are handled within defined SLAs.
• Perform host, network, and log-based forensic investigations.
• Collect, preserve, and analyze digital evidence.
• Identify root causes and attack vectors.
• Document investigation findings for management and audit requirements.
• Analyze Indicators of Compromise (IOCs), TTPs, and threat actor activities.
• Correlate threat intelligence from internal and external sources.
• Recommend preventive and detective security controls.
• Conduct proactive threat hunting activities.
• Develop detection use cases and improve monitoring capabilities.
• Prepare incident reports, executive summaries, and root cause analysis documents.
• Conduct post-incident review meetings.
• Track and report incident trends and response metrics.
• Maintain incident response playbooks and SOPs.

Stakeholder Coordination

• Coordinate with Infrastructure, Network, Application, Cloud, and Business teams during incidents.
• Support crisis management and major incident response activities.
• Provide security recommendations and remediation guidance.
• Participate in tabletop exercises and cyber simulations.
• Enhance incident response procedures and knowledge base.
• Contribute to security awareness and incident response training programs.

Required Technical Skills

• Incident Response & Incident Handling
• SIEM Platforms (Microsoft Sentinel, Splunk.)
• Network Security Analysis
• MITRE ATT&CK Framework
• Malware Analysis (basic to intermediate)
• Windows, Linux, and Cloud Security
• Log Analysis and Event Correlation
• Scripting knowledge (PowerShell, Python, Bash) preferred

Required Certifications (Preferred)

• GCFA / GCFE
• CHFI
• CISSP
• Security+
• Microsoft Security Certifications
• CEH

Experience Requirements

CSIRT Analyst

• 5+ years of cybersecurity experience.
• Experience leading major security incidents and deep investigations.
• Experience handling malware, phishing, endpoint compromise, and network-based incidents
• Strong knowledge of threat intelligence, threat hunting, and incident coordination

At Fujitsu, we are committed to an inclusive recruitment process that values the diverse backgrounds and experiences of all applicants. We believe that hiring people from a wide variety of backgrounds makes us stronger, not because it's the right thing to do, but because it allows us to draw on a wider range of perspectives and life experiences.