Senior Principal Network Engineer

PURPOSE AND SCOPE:

Determines network strategies and competence by planning delivery of solutions; answering technical and procedural questions for less experienced team members; teaching improved processes; mentoring team members. Determines network requirements by evaluating business strategies and requirements; researching information network standards; conducting system network and vulnerability analyses and risk assessments; studying architecture/platform; identifying integration issues; preparing cost estimates. Plans network systems by evaluating network and network technologies; developing requirements for local area networks (LANs), wide area networks (WANs), virtual private networks (VPNs), routers, load balancers. Wireless LANS, and related network and network devices; designs IP Address Management infrastructures (IPAMs), including use of DHCP and DNS that adhere to industry standards.

PRINCIPAL DUTIES AND RESPONSIBILITIES:

• Design, implement, and support end-to-end network architecture across data center, cloud, campus, and WAN environments
• Assist in establishing reference architectures, design standards, and guardrails used across the organization
• Ensure network designs align with business strategy, application needs, security posture, and scalability goals
• Evaluate emerging technologies, platforms, and vendors; influence investment and platform selection decisions
• Provide hands-on expertise during major incidents, architectural failures, or executive-visible outages
• Lead deep technical investigations involving performance, resilience, or security failures
• Ensure network architectures meet availability, resiliency, compliance, and security requirements
• Identify systemic risks and drive preventative architectural improvements

Additional responsibilities may include focus on one or more departments or locations. See applicable addendum for department or location specific functions.

PHYSICAL DEMANDS AND WORKING CONDITIONS:

The physical demands and work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

EDUCATION:

• Bachelor's Degree preferred; Advanced Degree preferred
• A degree in Computer Science or MIS a plus.
• MIS or Computer Science course work at the graduate level a plus
• Certification in a Network role (e.g. CCNA) is highly desirable.

EXPERIENCE AND REQUIRED SKILLS:

• Minimum of 12 years' related experience of which at least 8 years should be in a network role
• Deep expertise in routing and switching (BGP, OSPF, IS-IS, EVPN/VXLAN)
• Strong experience with data center and WAN architectures (MPLS, SD-WAN)
• Advanced knowledge of network security concepts (firewalls, segmentation, zero trust, SASE)
• Experience with cloud networking (AWS, Azure, or Google Cloud Platform): VPC/VNet design, hybrid connectivity
• Hands-on experience with monitoring, telemetry, and performance optimization
• Expert working level with switches, routers, wireless LANs, load balancing, DNS

The rate of pay for this position will depend on the successful candidate's work location and qualifications, including relevant education, work experience, skills, and competencies. Rate: $131,900 - $197,800 for Waltham, MA.

Benefit Overview: This position offers a comprehensive benefits package including medical, dental, and vision insurance, a 401(k) with company match, paid time off, parental leave and potential for performance-based bonuses depending on company and individual performance.

Fresenius Medical Care maintains a drug-free workplace in accordance with applicable federal and state laws.
Fresenius Medical Care is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sexual orientation, gender identity, parental status, national origin, age, disability, military service, or other non-merit-based factors