Network Operations Engineer III

Astreya • Denver, CO

4d • Onsite

About The Position

Our Tier 3 NOC Engineer is responsible for advanced troubleshooting, fault isolation, incident escalation, and network optimization within a globally distributed backbone network. This role requires deep expertise in network infrastructure, routing, switching, troubleshooting, and operational support. The Tier 3 Engineer serves as the primary escalation point for Tier 2 engineers, taking ownership of complex cases and driving them to resolution. This position also contributes to process improvements, automation, and monitoring system enhancements to optimize network operations.

Requirements

• Expertise in Data Center networking, including rack installations, routers, switches, VLANs, and routing protocols (BGP, OSPF, MPLS, etc.).
• Strong experience troubleshooting Layer 1–3 network issues in a large-scale production environment.
• Hands-on experience with network monitoring tools (e.g., SolarWinds, Nagios, PRTG, or similar).
• Advanced knowledge of troubleshooting IP transport/transmission networks and transceivers.
• Experience capturing and analyzing network traffic for troubleshooting.
• Proficiency with ticketing systems (e.g., ServiceNow, Jira, or equivalent).
• Strong analytical skills, problem-solving mindset, and ability to work autonomously.
• Excellent communication and documentation skills for incident tracking and resolution.
• Proven ability to work in a fast-paced, mission-critical environment.
• Strong sense of ownership, urgency, and drive in troubleshooting and resolving network issues.
• Bachelor’s degree in Computer Science, Networking, or a related field (or equivalent experience).
• 8+ years of network operations experience, with a focus on Optical networks.

Responsibilities

• Operate and troubleshoot a globally based Data Center network, including routing and switching devices.
• Perform fault isolation and resolution, diagnosing Layer 1–3 network issues.
• Take ownership of escalated cases from other engineers, ensuring a successful resolution.
• Manage and escalate critical events, communicating clearly and concisely with stakeholders.
• Support network circuit and hardware troubleshooting, including patch panels, optics, and cabling.
• Detect and diagnose various error/failure conditions across an array of network device types.
• Provide hands-on support for network incidents, collaborating with engineering teams when required.
• Provide Tier 3 support for all Backbone Network Repair issues, assisting other team members with advanced troubleshooting.
• Serve as the escalation point-of-contact during business hours, handling troubleshooting, tooling, and process issues.
• Coordinate with DC facilities teams on maintenance activities impacting network infrastructure.
• Own incident response processes, including escalations to higher-level support teams when necessary.
• Rapidly respond to major network incidents, supporting SEV initiation and resolution processes.
• Monitor the respective BackBone infrastructure ticket queues, ensuring timely and accurate responses to alerts.
• Track and document incident resolution steps, maintaining accurate logs in ticketing systems.
• Proactively identify and resolve network performance issues, optimizing existing configurations.
• Develop and maintain network change documentation, including VLAN, subnet, and DNS modifications.
• Contribute to the creation of monitors, alerts, dashboards, and performance metrics to drive continuous improvements.
• Identify areas for automation to improve efficiency.
• Provide feedback on recurring network issues, refining troubleshooting procedures and SOPs.
• Support network optimization efforts, participating in capacity planning and scaling initiatives.
• Document and optimize operational processes and procedures, ensuring alignment with best practices.
• Follow Return Merchandise Authorization (RMA) processes and coordinate with vendors for hardware replacements.
• Ensure accurate inventory and documentation in collaboration with audit and asset management teams.
• Monitor tickets for adherence to SLAs, ensuring prompt issue resolution.

Benefits

• Medical provided through UHC (PPO, HSA, Surest options) / Medical provided through Kaiser (HMO option only) for California employees only
• Dental provided through UHC Nationwide
• Vision provided by UHC
• Flexible Spending Account for Health & Dependent Care
• Pre-Tax Account for Commuter Benefit/Parking & Transit (location-specific)
• Continuing Education and Professional Development via various integrated platforms, e.g. Udemy and Coursera
• Corporate Wellness Program provided by Goomi Group
• Employee Assistance Program
• Wellness Days
• 401k Plan
• Basic and Supplemental Life Insurance
• Short Term & Long Term Disability
• Critical Illness, Critical Hospital, and Voluntary Accident Insurance
• Tuition Reimbursement (available 6 months after start date, capped)
• Paid Time Off (accrued and prorated, maximum of 120 hours annually)
• Paid Holidays
• Any other statutory leaves, paid time, or other ancillary benefits required under state and federal law

What This Job Offers

• Job Type: Full-time
• Career Level: Senior