Summary
Work History
Education
Skills
Certification
Software
Timeline
CustomerServiceRepresentative
Nambikkai Maharajan S

Nambikkai Maharajan S

Senior Security Consultant
Chennai,TN

Summary

Certified Penetration Tester and Cloud Security Specialist with over 14 years of expertise in offensive security, cloud infrastructure, and application testing. Proven track record in conducting web, network, and API penetration tests, securing AWS cloud environments, and leading red team exercises following frameworks like MITRE ATT&CK and NIST CSF. Experienced in delivering risk assessments, collaborating with development teams, and managing secure cloud migrations in corporate environments.

Work History

Senior Information Security Consultant

Quadruple Automation Pvt Ltd
03.2023 - Current
  • Monitoring and analysing network traffic data to identify potential security threats.
  • Skilled in malicious activity by analysing packet captures using Wireshark, Nmap, Splunk (SIEM) and Qualys (VMDR).
  • Carried out penetration testing for network and web using OWASP, Burp Suite, SQL Map, XSS, and other tools
  • Experience in different web application security testing tools like Acunetix, Metasploit, Burp suite, Nessus and Nmap.
  • Proficient in understanding application-level vulnerabilities like XSS, SQL Injection, CSRF and authentication flaws.
  • Performed vulnerability assessments including physical, social engineering, application, and network exploitation.

IT Service Desk Analyst III

Arrow Electronics Inc
08.2022 - 12.2022
  • Built and customised SIEM dashboards to monitor logs for APAC from various sources, including Windows servers, firewalls, and web applications.
  • Wrote custom correlation rules and alert logic to flag suspicious activity like brute-force attempts and unauthorised access.
  • Investigated alerts daily, identified real threats, and worked with the team to contain and mitigate them.
  • Used regular expressions to parse unstructured log data and improve the accuracy of correlation logic.
  • Deep understanding of OWASP top 10, MITRE ATT&CK framework and CVSS Scoring.

Team Lead – Cybersecurity &Vendor Management

Prodapt Solutions Pvt Ltd
01.2021 - 05.2022


  • Engaged in internal ISO 27001 audit cycles, contributing evidence, control mappings, and remediation plans in coordination with compliance teams.
  • Investigated alerts daily, identified real threats, and worked with the team to contain and mitigate them.
  • Mentored L1 and L2 teams, improving triage efficiency and incident management.
  • Achieved significant cost savings by renewing only critical assets and software licenses, and leveraging strategic vendor negotiations to optimise Capex and Opex Expenditure.

Team Lead -Cyber Security

Geosafe Firesafety Pvt Ltd
01.2019 - 01.2021
  • Company Overview: (Supporting Singapore Operations)
  • Managed vulnerability scanning operations and oversaw in-house penetration testing to validate critical CVEs, reducing false positives and strengthening patch prioritisation workflows.
  • Worked with compliance teams during internal ISO 27001 audits, providing evidence and addressing technical control gaps.
  • Built and customised SIEM dashboards to monitor logs for APAC from various sources, including Windows servers, firewalls, and web applications.
  • Generated in-depth security posture reports using custom dashboards for cybersecurity leadership and executive briefings.
  • Developed SOPs covering incident triage, severity classification, root cause analysis, and risk-based vulnerability remediation with post-fix validation.
  • (Supporting Singapore Operations)

Network Security Administrator

Lexus Computers Pvt Ltd
03.2015 - 12.2018
  • Configured and managed Cisco routers, ASA firewalls, and Windows servers to ensure robust network security.
  • Conducted routine network vulnerability scans and addressed identified risks.
  • Provided on-site technical support, including installation, configuration, and troubleshooting of desktops, laptops, and printers for various clients.

Senior Officer - DSL NOC

Bharti Airtel India Ltd
06.2008 - 06.2010
  • Company Overview: (Alcatel Lucent for Network Services)
  • Monitored network performance to ensure service availability and quick diagnosis of hardware failures, Zabbix, SolarWinds, PRTG, and WhatsUp Gold.
  • Provided 24/7 on-call support for escalated network issues.
  • Diagnosed hardware failures quickly by leveraging vendor support resources.
  • Analyse logs, alarms, and performance reports to detect anomalies and potential threats.
  • (Alcatel Lucent for Network Services)

Senior Officer - L2 Tech Support

Bharti Airtel Services Ltd
03.2006 - 06.2008
  • Provided 24/7 on-call support for network and application issues, including IoT-related concerns.
  • Developed innovative solutions to resolve customer issues through problem-solving.
  • Responded to customer complaints with empathy, patience, and understanding.

Education

Bachelor of Computer Applications -

University of Madras
Chennai, India
04.2000 - 01.2003

Skills

Penetration Testing

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Certification

Certified Ethical Hacker (CEH), EC-Council, ECC:3894207165

Software

Burp Suite, OWASP ZAP, Metasploit, SQLMap,Wireshark

OWASP ZAP – Dynamic application security testing

Postman – API testing

Qualys – Vulnerability management and compliance reporting

Cloud Security (AWS)

SIEM & Monitoring - Splunk

Programming / Scripting - Java

ISO 27001, NIST CSF, MITRE ATT&CK – Security frameworks and standards

Timeline

Senior Information Security Consultant

Quadruple Automation Pvt Ltd
03.2023 - Current

IT Service Desk Analyst III

Arrow Electronics Inc
08.2022 - 12.2022

Team Lead – Cybersecurity &Vendor Management

Prodapt Solutions Pvt Ltd
01.2021 - 05.2022

Team Lead -Cyber Security

Geosafe Firesafety Pvt Ltd
01.2019 - 01.2021

Network Security Administrator

Lexus Computers Pvt Ltd
03.2015 - 12.2018

Senior Officer - DSL NOC

Bharti Airtel India Ltd
06.2008 - 06.2010

Senior Officer - L2 Tech Support

Bharti Airtel Services Ltd
03.2006 - 06.2008

Bachelor of Computer Applications -

University of Madras
04.2000 - 01.2003

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