Open to opportunities

Sivaranjani Natarajan

@sivaranjaninatarajan

Message

PKI and vulnerability management-focused cybersecurity analyst.

India

Message

What I'm looking for

I am looking for a mid-level security role focused on PKI, SIEM or vulnerability management where I can apply technical PKI expertise, drive incident detection/remediation, collaborate across teams, and grow in cloud and enterprise security environments.

I am a cybersecurity analyst specializing in PKI, SIEM, and vulnerability management with hands-on experience implementing and managing MS-PKI (Windows Server 2007/2016/2019), OpenSSL/JKS key stores, OCSP, NDES/SCEP, and third-party CA certificate provisioning.

I manage SIEM operations, meet SLAs, and conduct cloud-based vulnerability management using Tenable.io/Nessus SaaS and Qualys; I authored SOPs for CSR creation and PKI processes and supported certificate issuance, renewal and revocation activities.

I am detail-oriented, proactive, and a strong technical contributor recognized with internal awards and subject-matter expertise in PKI; I collaborate across teams to remediate vulnerabilities and ensure security compliance.

Experience

Work history, roles, and key accomplishments

Cybersecurity Analyst

Tata Consultancy Services

Dec 2021 - Apr 2024 (2 years 4 months)

Specialized in PKI, SIEM, and vulnerability management; managed MS-PKI deployments, certificate lifecycle (issuance, renewal, revocation) and OCSP/NDES, and operated SIEM to meet SLAs while driving vulnerability remediation using Tenable/Qualys.