Senior Engineer - Security Engineering

CBTS; Chennai; On-site; INR 900,000 - 1,500,000; Full time

Job summary

CBTS in Chennai is seeking a Zscaler & Network Security Engineer to administer ZIA, ZCC, and VPN solutions, ensuring secure internet access and robust endpoint connectivity. You will monitor security incidents, perform changes through formal processes, and work with security teams to uphold policy baselines.

The role requires hands-on experience with ZIA, ZCC, and GlobalProtect, plus familiarity with vulnerability management tools like Qualys, and strong documentation skills.

Qualifications

• Hands-on experience administering Zscaler ZIA and ZCC.
• Strong understanding of web security concepts: SSL inspection, URL filtering.
• Experience troubleshooting ZCC, PAC files, proxy connectivity, and endpoint access.
• Familiar with VPN technologies, especially GlobalProtect.
• Experience with security incident management and SLA-driven operations.
• Knowledge of Change Management and Change Control processes.
• Experience using Qualys or similar vulnerability/asset-management platforms.
• Strong documentation skills: SOPs, runbooks, knowledge articles.

Responsibilities

• Administer and maintain ZIA policies, including SSL inspection, URL filtering, and application control.
• Manage ZCC deployments: installation, connectivity, authentication, policy enforcement, and endpoint issues.
• Oversee PAC file changes through controlled deployment processes and validation.
• Monitor security alerts and dashboards; investigate and resolve incidents within SLAs.
• Lead Change Control activities for security baseline deviations and approvals.
• Troubleshoot VPN/remote access solutions such as GlobalProtect and user connectivity.
• Utilize asset inventory and vulnerability tools (Qualys) for investigations and remediation.
• Review policy/whitelist requests and escalate high-risk items accordingly.
• Support audits with evidence and maintain SOPs/runbooks for consistency.

Skills

ZIA administration

ZCC administration

VPN technologies

Qualys

SLA monitoring

Change control

Documentation

Tools

Zscaler ZIA

Zscaler Client Connector

GlobalProtect

PAC files

Qualys

Job description

Job Description

Role Overview

We are seeking a Zscaler & Network Security Engineer responsible for administering, monitoring, troubleshooting, and continuously improving secure internet access, endpoint connectivity, remote access, and security controls. The role will work closely with security operations, network teams, and senior security stakeholders to maintain a strong security posture while ensuring reliable user connectivity.

Key Responsibilities

• Administer and maintain Zscaler Internet Access (ZIA) policies, including:
• SSL inspection
• Application control
• Sandbox policies
• URL filtering
• CASB controls
• Malware exceptions, blocks, and security policies
• Manage and troubleshoot Zscaler Client Connector (ZCC) deployments, including installation, connectivity, authentication, policy enforcement, and endpoint-related issues.
• Manage PAC file changes through a controlled, tested, peer-reviewed, and approved deployment process.
• Monitor security alerts and operational dashboards, investigate issues, and resolve day-to-day security incidents within defined SLAs.
• Raise, document, implement, and drive changes through formal Change Control processes, particularly where changes deviate from the approved security baseline.
• Manage and troubleshoot VPN/remote-access solutions, such as Palo Alto GlobalProtect, addressing connectivity, authentication, performance, and user-access issues.
• Use asset inventory and vulnerability-management tools, such as Qualys or similar platforms, to support troubleshooting, asset identification, security investigations, and vulnerability-management activities.
• Review and assess policy, URL, application, and whitelisting requests, escalating higher-risk requests to senior security stakeholders for appropriate risk assessment and approval.
• Apply least-privilege access principles across different user populations, including employees, contractors, privileged users, and executives.
• Support security audits and compliance reviews by collecting, validating, and providing appropriate control evidence and supporting documentation.
• Develop and maintain Standard Operating Procedures (SOPs), troubleshooting guides, and knowledge base articles to improve operational consistency and knowledge sharing.

Required Skills & Experience

• Hands-on experience administering Zscaler ZIA and Zscaler Client Connector.
• Strong understanding of web security concepts, including SSL inspection, URL filtering, application control, CASB, sandboxing, and malware protection.
• Experience troubleshooting ZCC, PAC files, proxy connectivity, and endpoint access issues.
• Experience with VPN technologies, preferably Palo Alto GlobalProtect.
• Familiarity with security incident management, alert monitoring, and SLA-driven operations.
• Understanding of Change Management and Change Control processes.
• Experience using Qualys or similar vulnerability/asset-management platforms.
• Strong understanding of least privilege, secure baselines, access control, and security governance.
• Ability to assess security risks and appropriately escalates exceptions or higher-risk requests.
• Strong documentation skills, including writing SOPs, runbooks, and knowledge articles.

Preferred Skills

• Experience working in an enterprise Security Operations or Network Security environment.
• Palo Alto Networks security technology experience.
• Familiarity with vulnerability-management and security-compliance frameworks.
• Experience supporting internal and external security audits.
• Relevant certifications such as Zscaler, Palo Alto Networks, Security+, or equivalent.

Key Competencies

• Strong analytical and troubleshooting skills
• Security-focused mindset
• Attention to detail and risk awareness
• Effective incident and change management
• Clear written and verbal communication
• Ability to work within defined SLAs and operational processes
• Strong stakeholder management and escalation skills