IT Network & Security Engineer

Job Description – IT Network & Security Engineer

Position Title : IT Network & Security Engineer

Location :  Chennai

Reports To : IT Manager / Head of Infrastructure

Position Purpose

We are seeking a highly skilled and experienced IT Network & Security Engineer to manage and secure enterprise-wide network infrastructure. The role involves handling L1–L3 support tickets, designing and implementing secure network solutions, and ensuring compliance with organizational and industry standards. The engineer will be responsible for LAN / WAN, Wi-Fi, Data Center, and hybrid cloud environments, along with managing firewalls, VPNs, and NAC systems.

Key Responsibilities

Design, implement, and maintain secure LAN, WAN, Wi-Fi, and Data Center networks.

Develop scalable, resilient, and compliant network security architectures.

Configure and manage next-generation firewalls (Cisco ASA, Palo Alto, Fortinet, Check Point).

Maintain access control, VPN configurations, and network segmentation policies.

Resolve L1, L2, and L3 support tickets related to network and security issues.

Troubleshoot performance, connectivity, and security concerns across enterprise systems.

Deploy and manage IPSec, SSL, DMVPN, and Remote Access VPNs.

Implement and manage NAC solutions (Cisco ISE, Aruba ClearPass).

Ensure role-based, identity-driven access for enhanced security.

Design and enforce security controls in Azure and AWS environments.

Implement and manage NSGs, WAFs, CASBs, and SASE architectures.

Use tools such as ManageEngine, SolarWinds, and PRTG for proactive monitoring.

Conduct periodic audits, risk assessments, and maintain compliance documentation.

Configure and manage Cisco Access, Core, and Nexus switches.

Oversee lifecycle management of switching infrastructure.

Work with IT operations, compliance, and DevOps teams to improve security posture.

Recommend and review emerging network security solutions.

Scope & Decision-Making Authority

No direct reports.

Authority to recommend and implement network & security solutions in consultation with the IT leadership.

Internal & External Relationships

Daily interaction with direct manager and cross-functional units.

Ad-hoc interaction with clients, vendors, and technology partners.

Job-Specific Knowledge & Soft Skills

Strong knowledge of enterprise IT operations.

Analytical and problem-solving mindset.

Ability to prioritize tasks in a fast-paced, diverse environment.

Strong written and verbal communication skills.

Proficiency in Microsoft Office tools.

Experience liaising across different business functions and levels of seniority.

Qualifications & Experience

Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience).

8+ years of experience in IT network and security engineering.

Strong expertise in TCP / IP, routing protocols, segmentation, and security principles.

Hands-on experience with Cisco IOS / NX-OS, firewall configurations, VPN technologies, and NAC deployments.

Proven experience in hybrid / multi-cloud security.

Industry certifications preferred :

Fortinet NSE 4–8

Palo Alto Networks PCNSE

Cisco CCNP Security

Functional Competencies

Ability to design and operate enterprise-wide IAM platforms.

Skilled in designing, configuring, and securing enterprise networks.

Knowledge of IaaS, PaaS, SaaS, and cloud integration security.

Ability to manage vendor relationships and negotiate effectively.