Deepak Narayanan S

Senior Cybersecurity Engineer

Securing Digital Frontiers with Innovation & Excellence

Deepak Narayanan S

About Me

With over 10 years of total experience, including 5+ years in Information Security Management and CIRT Management, I specialize in driving end-to-end security operations and managing complex technical, analytical, and strategic projects from initiation through successful deployment.

My core strengths include technical leadership, documentation management, project coordination, and cross-functional collaboration, with a proven track record of enhancing team and organizational performance.

I am passionate about improving security posture, streamlining processes, and delivering impactful results within defined timelines.

10+ Years Experience
5+ Awards Won
100% Dedication
SPLUNK CERTIFIED CYBERSECURITY DEFENSE ANALYST GITHUB PULL SHARK BADGE RANGEFORCE NEWBIE & BLUE TEAM BADGES TRYHACKME BLUE TEAMING TRYHACKME RED TEAMING TRYHACKME FOUNDATIONS HACKERRANK 30 DAYS OF CODE (PYTHON)

Technical Expertise

🔐

IAM & PAM

  • One Identity (SPP, SPS)
  • Thycotic Secret Server
  • Thales SSO
🛡️

Endpoint Security

  • Palo Alto Cortex XDR
  • Trellix
  • Ivanti MDM
🔍

SIEM & Threat Intel

  • Splunk
  • VirusTotal
  • AlienVault OTX
  • MISP
⚠️

Vulnerability Management

  • Qualys
  • Nessus
🔧

DevSecOps

  • SonarQube
  • Trivy
  • Gitleaks
  • Snyk
  • OWASP ZAP
🤖

AI & Automation

  • Python
  • CrewAI
  • LangChain
  • PowerShell
  • Bash
☁️

Cloud Security

  • AWS GuardDuty
  • CloudTrail
  • Athena
  • S3 & EC2
🎯

Penetration Testing

  • Kali Linux
  • Reconnaissance
  • Threat Hunting

Professional Journey

July 2025 - December 2025

Senior Cybersecurity Engineer – CIRT

Valeo India Private Limited

  • Managed security incidents and alerts using Cortex XDR and Splunk, coordinating with regional cybersecurity officers
  • Implemented alert tuning and whitelisting in XDR to reduce false positives and improve detection quality
  • Monitored log source integrity in Splunk, ensuring no data gaps during critical incident investigations
  • Conducted threat hunting by creating custom XDR queries and automated ticketing workflow using Google Apps Script
  • Managed vulnerabilities using Qualys, automating Jira ticket creation for site and app-specific tracking
  • Performed penetration testing on PAM project using Kali Linux, identifying critical vulnerabilities
  • Executed reconnaissance assessments to identify organization-owned assets and strengthen perimeter security
  • Expanded cybersecurity expertise through AI-driven security automation, developing multiple AI-based projects
October 2023 - June 2025

Senior Cybersecurity Engineer – InfoSec

Valeo India Private Limited

  • Managed One Identity PAM solution (SPP and SPS) end-to-end from initiation to deployment and user onboarding
  • Coordinated with implementation teams and vendor across all project phases, including LDAP, DNS, SMTP integration
  • Handled appliance licensing, SSL certificate management, version upgrades, patching, and hotfix deployments
  • Designed dedicated PAM project site with admin guides, architecture diagrams, user guides, and KT videos
  • Conducted Disaster Recovery Plan (DRP) testing and collected user feedback for continuous improvement
  • Configured AWS S3 buckets for PAM session videos and backups via EC2 Linux intermediary instance
  • Led PAM team and conducted live knowledge transfer sessions for effective product management
  • Developed automation scripts using Google Apps Script, Bash, PowerShell, and Python to streamline workflows
March 2022 - October 2023

Senior Cybersecurity Engineer – InfoSec

Valeo India Private Limited

  • Expanded ESSO responsibilities, managing application integrations and access provisioning
  • Performed IDM console operations including bulk onboarding of external companies and auditing
  • Enhanced MDM management with advanced technical audits and OU management
  • Managed Lookout antimalware console, alerting users of high-risk threats and providing mitigation guidance
  • Administered PKI certificate lifecycle and Secret Server tasks including access management and auditing
  • Managed PGP SSL certificate monitoring and upgrades, coordinating with COE team and vendor support
  • Managed External Connection Validation Tool, reviewing external user access prior to firewall implementation
  • Mentored junior analysts and created comprehensive documentation for knowledge transfer
October 2020 - February 2022

Cybersecurity Analyst – InfoSec

Valeo India Private Limited

  • Managed Identity & Access Management (IAM) including user provisioning and authentication troubleshooting
  • Handled Mobile Device Management (MDM) via Ivanti with advanced troubleshooting support
  • Conducted Network Access Control (NAC) validation and Trellix manual OU movements
  • Maintained 100% security score for Infrastructure Quality Control Tool through proactive issue resolution
  • Administered Enterprise Single Sign-On (ESSO) via smartcards including PIN resets
  • Managed Symantec PGP console for encrypted email communication with configuration and troubleshooting
February 2019 - July 2020

Technical Support Engineer

Inspirisys Solutions Limited

June 2017 - February 2019

System Engineer

Shibsi Technologies Private Limited

July 2015 - April 2017

Senior Technician

Mahindra Motors

July 2014 - June 2015

Technician

TVS Motor Company

Awards & Recognition

🏆

Employee of the Month

June 2024

Awarded for successfully managing PAM Project end-to-end with innovative automation initiatives

Long Service Award

October 2023

Recognition of loyalty, dedication, and long-term commitment

🎖️

Individual Contributor Award

March 2022

Outstanding individual performance and contribution to team success

🏅

Employee of the Month

November 2021

Exceptional performance and dedication

📜

Certificate of Appreciation

April 2020

Top performer during COVID-19 lockdown with exceptional dedication

🎓

Splunk Certified

Cybersecurity Defense Analyst

Investigating with Splunk certification

Let's Connect

I'm always open to discussing cybersecurity projects, collaboration opportunities, or just connecting with fellow security professionals.

📍 Chennai, India
✉️ deepak@dnsec.in