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Tata Communications Redefines Connectivity with Innovation and IntelligenceDriving the next level of intelligence powered by Cloud, Mobility, Internet of Things, Collaboration, Security, Media services and Network services, we at Tata Communications are envisaging a New World of Communications

Job Description

Network Operations & Support - Linux firewall engineer

Experience: 6-8 Years Location: Chennai/Bangalore

Role Summary

We are looking for a skilled Distributed Perimeter (Linux Firewall Engineer) to design, build and operate secure Linux-based perimeter controls. The role requires strong hands-on experience with NixOS, nftables, and proxy technologies, along with contemporary networking, container networking, and security observability tools such as Cilium, Suricata, and Zeek. The engineer will be responsible for implementing declarative, scalable, and security-focused Linux infrastructure. Additionally, the ideal candidate should possess advanced-level expertise in Red Hat Enterprise Linux (RHEL), including system administration, hardening, performance tuning,



automation, and security management. The candidate should have proven experience managing large-scale RHEL deployments, integrating security controls, and ensuring high availability and compliance across distributed infrastructures.

Key Responsibilities

• Install, configure, and maintain Linux systems in production environments
• Design and implement distributed perimeter security using Linux firewall and proxy technologies
• Build and manage systems using NixOS (MUST) with declarative configuration principles
• Implement and troubleshoot Linux firewall rules using nftables (MUST)
• Deploy, configure, and manage proxy solutions, including: o Squid Proxy (MUST) o Sproxy
• Enforce inbound and outbound traffic control using firewall and proxy policies
• Deploy and support Cilium for container networking, security, and observability
• Configure and operate network security and visibility t

📌 Assistant Manager (Bengaluru)
🏢 Tata Communications
📍 Bengaluru