Principal Network Engineer

Job Title:

Principal Network Engineer – Network Segmentation

Note:

Fidelity is not providing immigration sponsorship for this position.

We are seeking an experienced Network Engineer to support a data center network segmentation initiative focused on implementing micro segmentation and Zero Trust architecture. The role involves designing, deploying, and optimizing segmentation policies using Segmentation platforms. You will be part of the team that leads the strategic shift from traditional flat networks to highly secure, micro‑segmented environments across on‑premises data centers, global offices, and multi‑cloud infrastructure.

You will work closely with security, infrastructure, and application teams to improve east‑west traffic visibility, reduce attack surface, and enforce least‑privilege communication.

Westlake, Texas (Onsite)

• Design and implement network segmentation and micro segmentation strategies across data center environments
• Develop Zero Trust network architectures aligned with enterprise security policies
• Define segmentation models (application-centric, environment-based, etc.)

• Deploy and configure segmentation platforms across on‑prem and cloud data centers
• Create and enforce security policies for east‑west traffic
• Integrate segmentation tooling with firewalls, SIEM/SOAR platforms, and CMDB / asset inventory systems

• Analyze application dependencies and traffic flows
• Build and validate allow/deny rules and segmentation policies
• Support policy simulation, testing, and enforcement phases

• Monitor segmentation effectiveness and tune policies
• Troubleshoot connectivity issues related to segmentation enforcement
• Ensure high availability and scalability of segmentation deployments

• Partner with application owners, security teams, infrastructure/cloud teams
• Drive workshops and onboarding sessions for segmentation adoption

• 7–10+ years of experience in network engineering, data center networking, and prior segmentation or migration projects
• Hands‑on experience with segmentation platforms (Illumio, Guardicore (Akamai), Cisco Secure Workload/Tetration)
• Strong understanding of networking (Cisco, HP, Arista, Palo Alto, Check Point, Juniper), TCP/IP, routing, switching, firewalls and ACLs, network security principles
• Experience with application dependency mapping, east‑west traffic inspection
• Strong understanding of Zero‑Trust Network Access (ZTNA), Secure Access Service Edge (SASE), and stateful firewalling
• Experience with cloud platforms (AWS, Azure, GCP), Kubernetes/container networking, scripting/automation (Python, Power Shell, or APIs), CMDB tools (Service Now), Linux and Windows server environments
• Experience working in financial services or highly regulated environments

Category:
Information Technology

Fidelity is transitioning to a full‑time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.

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.