RAJU C A
Guadalajara
Summary
Vulnerability & Network Engineer with enterprise experience managing vulnerability lifecycles, Qualys VMDR, and CVE analysis across 40,000+ devices. Proven track record in core network operations, including change management, router/switch configurations, asset management, and data center decommission and power-down activities. Prioritizes remediation using EPSS, CISA KEV, SSVC, and asset criticality, while driving lifecycle tracking and closure validation via JIRA. Actively bridges the gap between security compliance and infrastructure teams to smoothly execute risk reduction and hardware lifecycle projects.
Overview
3
3
Certifications
12
12
years of professional experience
Work History
Vulnerability Analyst
Tata Consultancy Services
Guadalajara, Mexico
12.2022 - Current
- Vulnerability Analyst focused on vulnerability assessment, prioritization, remediation tracking, and closure validation across enterprise assets.
- Performed authenticated vulnerability scans using Qualys VMDR across 40,000+ devices, analyzing CVEs, vendor advisories, CVSS, exploitability, and asset criticality to prioritize remediation actions.
- Applied risk-based frameworks including EPSS, CISA KEV, and SSVC to strengthen remediation planning and focus on the highest-risk vulnerabilities.
- Managed and led crisis response operations for zero-day and super-critical vulnerabilities from initial invocation through to final closure.
- Conducted vulnerability and configuration assessments using Qualys, NIST, CIS Benchmarks, and STIG guidelines to identify vulnerabilities, security misconfigurations, and compliance gaps.
- Utilized Power BI to author and deliver visual vulnerability compliance reports and strategic risk updates for senior leadership and auditing purposes.
- Managed the end-to-end vulnerability remediation lifecycle, including finding analysis, remediation follow-ups, exception tracking, aging reviews, and closure validation across the enterprise environment.
- Maintained vulnerability records and remediation status in JIRA to support reporting, audit readiness, and stakeholder visibility.
- Partnered with infrastructure, application, and asset-owner teams to drive remediation progress and improve the organization's overall security posture.
- Leveraged Microsoft Copilot and AI tools to accelerate vulnerability analysis, research, reporting, and remediation workflows, reducing manual effort and turnaround time.
Implementation Engineer/Asset Management
Tata Consultancy Services
Bangalore
01.2019 - 11.2022
- Supported network implementation and validation across APAC, EMEA, and North America for more than 60k network assets in a BFSI environment.
- Implemented and migrated Cisco network solutions to improve high availability, performance, and business continuity.
- Executed router, switch, TOR/BOR, and IOS upgrade changes, then completed post-change validation and decommissioning.
- Coordinated planned changes with Change Management and CAB teams to minimize service disruption in a global enterprise setting.
- Managed configuration backups, restoration testing, and inventory records across NMDB, DSDB, and AQDB systems.
- Performed routine inventory audits and reconciled CMDB and asset repository discrepancies to support compliance and audit readiness.
- Tracked hardware models, end-of-life and end-of-support status, and IOS firmware versions to reduce operational and security risk.
Network Administrator
ASAP Solutions
Bangalore
06.2017 - 12.2018
- Completed 100% of scheduled maintenance checks per month across routers, switches, and access controls.
- Configured and maintained routers, switches, VLANs, ACLs, and network access controls to support secure connectivity.
- Monitored ISP links, troubleshot connectivity issues, and coordinated with providers to reduce downtime.
- Resolved network incidents, performed root cause analysis, and completed service requests within SLA targets.
- Validated network changes after maintenance to confirm stable performance and consistent device connectivity.
L1 Engineer
Wipro Infotech
Mysore
06.2014 - 12.2016
- Coordinated vendor activities for link installations, router configurations, and service improvement initiatives using ServiceNow and JIRA.
- Conducted device health checks on switches, routers, and access points to identify interface errors, packet loss, latency, and connectivity issues.
- Escalated complex network problems to L2/L3 teams with clear troubleshooting notes and issue impact details.
- Troubleshot routers, switches, and WAN/LAN connectivity issues to restore access and reduce repeated disruptions.
- Analyzed interface errors, packet loss, and latency trends to support root-cause identification and faster remediation.
Education
Diploma - Computer Science & Engineering
Govt Polytechnic College, K R Pet
K R Pet01-2013
Skills
- Vulnerability Management
- CVE Analysis
- Patch Validation
- CVSS v3/v4
- Remediation Lifecycle Management
- Qualys VMDR
- Nessus
- JIRA
- ServiceNow
- DNS
- DHCP
- SSH
- HTTP/HTTPS
- Linux
- Windows
- Microsoft Azure
- CIS Benchmarks
- STIG assessment
- Asset criticality analysis
- Vendor advisory analysis
Certification
Qualys VMDR Certification
Personal Information
Raju C A
Current Location: Guadalajara, Mexico
Nationality: Indian
Languages: English
LinkedIn: www.linkedin.com/raju-ca
Timeline
Vulnerability Analyst
Tata Consultancy Services
12.2022 - Current
Implementation Engineer/Asset Management
Tata Consultancy Services
01.2019 - 11.2022
Network Administrator
ASAP Solutions
06.2017 - 12.2018
L1 Engineer
Wipro Infotech
06.2014 - 12.2016
Diploma - Computer Science & Engineering
Govt Polytechnic College, K R Pet