Network Engineer

About the Company

Based in Denver, Colorado, Cologix is North America's leading network-neutral interconnection and hyperscale edge data center company. Our platform provides access to 45+ digital edge and Scalelogix

SM hyperscale edge data centers in 12 markets across the United States and Canada, with a carrier-dense ecosystem of 710+ networks, 360+ cloud providers, 30+ onramps and seven Internet exchanges. We serve nearly 2,000 customers with direct access to local operations teams, delivering strong partnerships and exceptional operational support. Cologix is backed by one of the largest North American infrastructure funds and emphasizes ESG initiatives, people, environment, and client service.

As a Network Engineer with Cologix you will be responsible for assisting in the engineering, design, and maintenance of a large datacenter network.

• Monitor network performance and proactively identify and resolve issues to ensure high availability and reliability.
• Tier III support for network related problems.
• Respond to escalated network incidents and participate in on-call rotations for critical support.
• Collaborate with internal teams and external vendors to support customer deployments and service delivery.
• Document network designs, configurations, and operational procedures for internal knowledge sharing and compliance.
• Perform configuration changes, firmware upgrades, and capacity planning across primarily Juniper platforms.
• Work from ticketing systems resolving customers and employees on resolving complex network issues as an escalated resource.
• Design, implement, and maintain data center network infrastructure using primarily Juniper routers and switches.
• Provision and troubleshoot Layer 2 services (e.g., VLANs, VPLS, EVPN) and IP bandwidth services for enterprise and carrier customers.

• Minimum 3–5+ years of experience in data center or service provider networking.
• Excellent oral and written communications skills and a strong customer centric aptitude.
• Hands-on experience with Juniper Networks equipment (MX, QFX, EX series).
• Strong understanding of Layer 2 and Layer 3 protocols.
• Strong analytical and effective problem-solving skills.
• Ability to work independently and with a team to manage multiple priorities in a fast-paced setting.
• Manage assigned tasks and projects with little supervision.
• Quick learner who can adapt to changing requirements.
• Proven experience working in a team-based environment.
• Self-starter with good time management skills.
• Must be punctual, reliable, and flexible to meet the demands of the organization.

Required:

• Routers and switches:
  Juniper, Cisco, Brocade CLI
• Strong understanding of Layer 2 protocols: VLAN, STP, LACP, VPLS, EVPN
• Strong understanding of Layer 3 protocols: BGP, OSPF, IS-IS, EIGRP
• Strong understanding and experience of Network monitoring tools (e.g., SNMP, telemetry, syslog)
• Ethernet and optical transport fundamentals
• Network automation basics (e.g., Python, Ansible, or Juniper PyEZ)

• Optical Engineering
• Virtualization: VMWare, Openstack, KVM, Puppet, Chef
• Understanding of DDoS mitigation and traffic filtering
• Juniper JNCIA Experience
• Strong network automation experience
• MPLS and traffic engineering

• JNCIA – Juniper Networks Certified Internet Associate
• CCNA – Cisco Certified Network Associate
• CCNP – Cisco Certified Network Professional

Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or transfer sponsorship of an employment visa at this time, including CPT/OPT.

Salary: $90,000 - $110,000 a year

• We offer a competitive benefit package for full-time employees that includes:
• Medical, dental, and vision insurance
• Flexible spending account options
• Non-accrued PTO
• Company paid holidays
• 401k Retirement Plan
• Short- and Long-Term Disability
• Employee Discount Marketplace
• Employee Recognition Platform
• Individual compensation will be commensurate with the candidate's experience. This position will also be eligible for an annual bonus.

NOTE:

This job description is not intended to be all-inclusive. Employee may perform other…