Network Reliability Engineer L3/L4 at HCLTech Network Reliability Engineer L3/L4 at HCLTech in Croydon, Pennsylvania Posted in 2 days ago.

Type:

full-time Network Reliability Engineer L3/L4 Experience 10 + years of experience supporting enterprise network environments across LAN, WAN, WLAN, Security, and Data Center technologies. Key Responsibilities Develop backend and full-stack features using Python, Django, and PostgreSQL . Build and maintain REST / GraphQL APIs . Create automation workflows for network operations and approvals. Work with MongoDB, Redis, Celery, and RabbitMQ for data handling and background tasks. Deploy and manage applications using Docker and Kubernetes . Support automation using Terraform and Ansible . Build CI/CD pipelines using GitLab CI, Jenkins, or GitHub Actions . Integrate with tools such as ServiceNow, Git, and network vendor APIs . UI full stack experience for JS and HTML catalogs creations. Technical Skills Experience in network engineering / NOC / NRE / NetDevOps roles.

Core Networking:

Strong in Routing & Switching (BGP, OSPF, EIGRP, STP, VLANs, VRFs, HSRP/VRRP, etc.).

Network Domains:

Hands-on in one or more areas - Enterprise LAN/WAN, SD-WAN, Data Center (Nexus/ACI), WLAN, firewalls, or load balancers.

Automation & NetDevOps:

Design, build, and maintain network automation using Python, Ansible, Terraform, Git, CI/CD. Implement Infrastructure as Code (IaC) for configuration and lifecycle management. Integrate workflows with Source of Truth (NetBox/Nautobot) and ITSM tools (ServiceNow). Develop reusable modules, playbooks, and pipelines for provisioning, upgrades, backups, and compliance. Use Python with network libraries (Netmiko, NAPALM, pyATS, etc. as a plus).

Git & CI/CD:

Comfortable with Git (branches, merge requests) and basic CI/CD pipelines.

Observability:

Experience with at least one monitoring stack (SolarWinds, Cisco DNAC, ThousandEyes, Prometheus/Grafana, Splunk/ELK, etc.).

Protocols & Troubleshooting:

Strong understanding of TCP/IP, DNS, DHCP, VPNs, QoS, and proven ability to troubleshoot complex network issues under pressure.

Collaboration & Design:

Work closely with network architects, operations, SRE, and application teams to embed reliability by design. Contribute to network design reviews focusing on resilience, failure domains, capacity, and automation readiness.

Documentation & Mentoring:

Create and maintain runbooks, playbooks, and documentation for ops teams. Mentor engineers on NetDevOps, automation, and reliability best practices. Disclaimer HCL is an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, color, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, or any other protected classification, in accordance with federal, state, and/or local law. Should any applicant have concerns about discrimination in the hiring process, they should provide a detailed report of those concerns to secure@hcltech.com for investigation. Compensation and Benefits A candidate's pay within the range will depend on their skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year