Fidelity Investments
Principal Network Engineer
Merrimack, NH
Aug 14, 2025
Full-time
Full Job Description

Job Description:

The Network Core and Site Engineering (NCSE) team is responsible for the architecture, engineering, deployment, and support of the Fidelity network across the globe under a two squad model. Campus LAN/WAN squad supporting U.S. regional campuses and Investor centers, international campuses and WAN backbone and Data Center squad supporting Data center network fabric (overlay and underlay), Data center interconnects, co-location network infrastructure supporting connectivity to the cloud service providers.

The Principal Network Engineer on the Network Core and Site Engineering team is responsible for the design, engineering, and implementation of Fidelity Investments' datacenter and co-location core network routing and switching with a focus on stability, automation, and innovation. Engineer and operate the VXLAN overlay and underlay network environments traversing multiple platforms, supporting Enterprise Infrastructure teams on projects including engineering and implementing new and upgrading existing network hardware, code certification as well as keeping the network secure through tactical change management. Additional duties include operational support and participation in on-call rotation.

The Expertise You Have and The Skills You Bring

  • Experienced in engineering and supporting large scale enterprise infrastructure technologies for compute infrastructure connectivity over EVPN-VXLAN overlay networks.

  • Expert knowledge configuring and supporting HPE and Cisco networking platforms.

  • Network Engineering and Troubleshooting skills:

    • Routing Protocols: BGP, OSPF, VRF, VPNs

    • Switched Protocols: PVST, RPVST, HSRP/VRRP

    • Monitoring Protocols: SNMP, Syslog, Telemetry

  • Datacenter design and support experience:

    • Overlay technologies - VXLAN

    • EVPN-BGP

  • Experience with EVPN-VXLAN configuration and troubleshooting.

  • Documentation of complex technologies and topologies using Visio.

  • Knowledge of common network services (DNS/DHCP/HTTP/SSH)

  • Infrastructure automation experience and familiarity of scripting languages (bash/python/ansible) and interacting with Rest APIs

  • Implement code upgrade/hot fixes from vendors.

  • Provide technical support and assistance troubleshooting during on-call period and for impacting issues.

  • Familiarity with network observability and monitoring systems

  • Focused Curiosity, Initiative, Logical Mindset, Inquisitive, Communication (listening, speaking, writing, presentation), Time Management, Results driven, Tactical Planning

  • Computer Science/Network Engineering Bachelor's degree or 5+ years of related experience

  • Cisco CCNA/CCNP/CCIE or other network engineer certifications preferred

Certifications:

Category:

Information Technology

Fidelity's hybrid working model blends the best of both onsite and offsite work experiences. Working onsite is important for our business strategy and our culture. We also value the benefits that working offsite offers associates. Most hybrid roles require associates to work onsite every other week (all business days, M-F) in a Fidelity office.

Please be advised that Fidelity's business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.

PDN-9fa114d4-18d3-4a53-8041-47b99d2718ed
Job Information
Job Category:
Information Technology
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Principal Network Engineer
Fidelity Investments
Merrimack, NH
Aug 14, 2025
Full-time
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