Network Engineer/Network Specialist

Service Professional Backend Services

Job Title: Service Professional - Backend Services (Network Operations)

Location: Bangalore, India
Department: IT Backend Services
Reports To: Global Head SSC
Employment Type: Full-Time

Job Summary

We are seeking a skilled and proactive Network Specialist to support the design, implementation, and maintenance of our organization's network infrastructure. The role involves hands-on work with LAN, WAN, VPN, wireless, proxy, firewall, and cloud network systems, ensuring high availability, performance, and security across all network layers.

Key Responsibilities

Summary of Key Responsibilities

As a Network Specialist, you will:

• Design, implement, and maintain LAN, WLAN, WAN, VPN, wireless, proxy, firewall, and cloud network systems.
• Ensure secure, scalable, and high-performance network infrastructure across on-premises and cloud environments.
• Manage Cisco and Fortinet devices, including Cisco ISE integration for access control and policy enforcement.
• Monitor and troubleshoot network issues, ensuring minimal downtime and optimal user experience.
• Collaborate with cross-functional teams to support business continuity, security, and compliance initiatives.
• Provide Tier 2/3 support and participate in incident response and on-call rotations.

Network Operations

Local Area Network (LAN):

• Monitor and maintain internal network infrastructure including switches, access points, and structured cabling.
• Configure and manage VLANs, port security, and access control within the LAN environment.
• Design and implement LAN zoning and segmentation strategies to isolate traffic, enhance security, and optimize performance.
• Ensure optimal performance of wired and wireless LAN systems across office and data center locations.
• Management of network devices with Cisco Catalyst Center
• Troubleshoot LAN-related issues and coordinate with desktop support teams for resolution.

Wide Area Network (WAN):

• Support and maintain WAN connectivity between branch offices, data centers, and cloud environments.
• Configure and monitor routers, firewalls, and inter-site routing protocols.
• Collaborate with ISPs and vendors to manage bandwidth, SLAs, and troubleshoot external connectivity issues.
• Assist in implementing SD-WAN solutions and optimizing WAN traffic routing.
• Administer and troubleshoot Cisco network devices including routers and switches.

Virtual Private Network (VPN):

• Configure and maintain secure VPN tunnels for remote access and site-to-site connectivity.
• Monitor VPN performance and availability, ensuring secure and reliable access for users and systems.
• Troubleshoot VPN-related issues and support end-users with connectivity problems.
• Ensure VPN configurations comply with organizational security policies.

Wireless Network:

• Deploy and manage wireless access points and controllers across office and campus environments.
• Monitor wireless network performance, coverage, and interference.
• Implement wireless security protocols including WPA2/WPA3 and guest access controls.
• Conduct periodic site surveys and optimize wireless configurations for performance and reliability.
• Integrate wireless LAN with Cisco Identity Services Engine (ISE) for centralized authentication, policy enforcement, and device profiling.
• Ensure secure onboarding of users and devices through ISE-based access control and posture assessment.

Proxy Operations:

• Configure and manage proxy servers to control and monitor internet access.
• Implement URL filtering, content control, and user authentication policies.
• Analyze proxy logs for usage patterns, security threats, and performance issues.
• Ensure proxy services align with organizational compliance and security standards.

Firewall Operations:

• Administer firewall policies and rule sets to protect network boundaries.
• Monitor firewall logs and alerts suspicious activity and potential threats.
• Perform regular audits and updates to firewall configurations.
• Collaborate with security teams to implement intrusion prevention and detection systems.

Cloud Network Management:

• Manage and monitor cloud-based networking components across platforms such as AWS, Azure, and Google Cloud.
• Configure virtual networks, subnets, gateways, and security groups in cloud environments.
• Integrate on-premises networks with cloud infrastructure using VPNs and hybrid connectivity solutions.
• Ensure cloud network security, scalability, and compliance with organizational standards.
• Collaborate with cloud architects and DevOps teams to support cloud-native applications and services.

Configuration & Deployment

• Assist in deploying and configuring network devices including routers, switches, firewalls, proxy servers, and wireless controllers.
• Maintain accurate documentation of network topology, configurations, and changes.

Security & Compliance

• Implement network security measures such as ACLs, firewalls, and intrusion detection systems.
• Support compliance with internal security policies and external regulatory requirements.

Support & Collaboration

• Provide Tier 2/3 support for network-related incidents and service requests.
• Work closely with system administrators, cybersecurity teams, and external vendors.
• Participate in on-call rotations and incident response activities.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or related field.
• 5+ years of experience in network administration or support.
• Strong understanding of TCP/IP, DNS, DHCP, VLANs, and routing protocols.
• Experience with Cisco, Juniper, or similar network platforms.
• Familiarity with network monitoring tools (e.g., SolarWinds, PRTG).
• Certifications required/preferred:
• CCNA (Cisco Certified Network Associate) – required
• CCNP (Cisco Certified Network Professional) – preferred
• Fortinet NSE 4 (Network Security Professional) or higher – preferred for FortiGate firewall management
• Experience with Cisco ISE, SD-WAN, and cloud networking certifications (e.g., AWS Certified Advanced Networking, Azure Network Engineer Associate) is highly desirable.

Preferred Skills

• CLI configuration capability
• Experience with cloud networking (AWS, Azure, GCP).
• Knowledge of ITIL practices and service desk operations.

What We Offer

• Competitive compensation and benefits.
• Opportunities for professional growth and certification.
• A collaborative and supportive work environment.
• Flexible work arrangements.