Network Architect - NRE

Job Summary

HCLTech is seeking a seasoned Network Reliability Engineer (NRE) with deep expertise in designing, operating, and optimizing hybrid & cloud network environments. You will focus on ensuring high availability, scalability, performance, and resilience of enterprise networks spanning on-premises data centers, SD-WAN, ACI, and major cloud platforms (AWS, Azure). This role combines network engineering with Reliability Engineering principle, emphasizing automation, observability, proactive incident prevention, and rapid recovery to meet stringent SLAs for mission-critical applications.

Responsibilities

• Design and implement highly reliable network infra.
• Define and track Service Level Objectives (SLOs), Service Level Indicators (SLIs) and error budgets.
• Lead major incident response, root cause analysis (RCA), and post-mortem reviews.
• Implement blameless post-mortems and drive corrective actions to prevent recurrence.
• Build automation scripts, tools, and self-healing mechanisms for network provisioning, configuration management, monitoring, and failover.
• Develop and maintain comprehensive dashboards, alerts, and logging using tools like Prometheus, Django, Grafana, Datadog, Splunk etc.
• Conduct network capacity planning, performance tuning, and chaos engineering to validate resilience.
• Collaborate on network security posture, zero-trust models, firewall policies, and compliance requirements.
• Work with DevOps, SRE, Cloud, Security, and Application teams to embed reliability into the development lifecycle.
• Guide junior engineers and contribute to knowledge sharing within the global team.

Requirements

• Bachelor Degree in Computer Science, Engineering, or related field (or equivalent experience).
• Preferred CCIE and/or CCNP certification Core Networking
• Deep expertise in Routing (BGP, OSPF, EIGRP), Switching (STP, VLANs, VXLAN), Firewalls, Load Balancers, VPNs, and SD-WAN.
• Strong troubleshooting of complex Layer 2/3/4 issues.
• Experience applying SRE principles (error budgets, toil reduction, automation).
• Proficiency in scripting (Python) and Infrastructure as Code (Terraform, Ansible, etc.).
• Prometheus, Grafana, Django, Datadog, etc.
• CI/CD & Automation - Jenkins, GitOps, Ansible.
• Packet analysis: Wireshark, tcpdump.
• Excellent problem-solving, communication, and stakeholder management
• Ability to work in a global, 24x7 on-call rotation.