Sr Subject Matter Expert (Support&Ops)

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, and major cloud platforms (AWS, Azure).

This role combines network engineering with Reliability Engineering principles—emphasizing automation, observability, proactive incident prevention, and rapid recovery to meet stringent SLAs for mission-critical applications.

Key Responsibilities

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

Skill Requirements

Required Skills & Experience (15 Years Profile)

• Core Networking (10+ years hands-on):
• 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.
• SRE/NRE Practices:
• Experience applying SRE principles (error budgets, toil reduction, automation).
• Proficiency in scripting (Python) and Infrastructure as Code (Terraform, Ansible, etc.).
• Tools & Technologies:  
• Monitoring: Prometheus, Grafana, Datadog, etc.
• CI/CD & Automation: Jenkins, GitOps, Ansible.
• Packet analysis: Wireshark, tcpdump.
• Soft Skills: Excellent problem-solving, communication, and stakeholder management. Ability to work in a global, 24x7 on-call rotation.

Education: Bachelor’s or Master’s in Computer Science, Engineering, or related field (or equivalent experience).

Preferred Certifications:

• CCIE (Enterprise, Data Center, or Security)/CCNP (R&S)

Other Requirements