Sr. Principal Network Architecture Engineer

Comcast•Philadelphia, PA

4d•$196,030 - $294,045•Hybrid

About The Position

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.) Job Summary We are seeking a highly experienced Network Architect/Engineer to lead the design, development, and evolution of Comcast’s next‑generation core and regional IP network architectures. This position is a Sr. Director equivalent on the individual contributor path. This role requires deep expertise across routing, transport, automation, and large‑scale service provider backbone design. The ideal candidate brings proven experience driving complex network architecture programs, cross‑functional technical leadership, and hands-on engineering depth across multiple routing platforms and protocols Job Description Summary Strong preference for candidates located in or able to work from our Bishops Gate or CTC (Philadelphia) office. Individuals in these roles are technical leaders with deep knowledge in their domain and are focused on executing and advancing the technical strategy of the organization. Highly senior Network Architect/Engineer role responsible for leading the design, development, and evolution of next‑generation core and regional IP network architectures. Drives major national backbone initiatives, including software‑driven core networks, Segment Routing, and controller‑based traffic‑engineering solutions. Leads definition, validation, and deployment of CLOS‑based architectures, multi‑plane designs, and disaggregated routing platforms. Develops end‑to‑end IP architectures supporting services such as CRAN, Cloud DVR, VOD, multicast distribution, and commercial backhaul solutions. Guides high‑capacity transport integrations including DWDM, 100G/400G optics, and ZR+ technologies. Provides cross‑functional technical leadership across product, engineering, operations, and vendor teams while shaping long‑term technology roadmaps. Oversees automation frameworks leveraging OpenConfig, YANG, and modern telemetry pipelines to standardize configuration and simplify large‑scale provisioning. Serves as Tier‑4 escalation and SME for complex network issues, migrations, traffic shifts, M&A integrations, and large‑scale operational programs. Mentors engineers at all levels, delivering internal training on routing technologies, automation, and tooling. Lead highly technical, hands on engineering projects from concept through execution. Collaborate effectively across a wide range of stakeholders, including senior leadership, peer architects, and downstream engineering teams. Present complex technical and architectural concepts to senior leaders with clarity and confidence. Translate high-level architectural strategies into actionable guidance for engineering teams at varying technical levels. Operate seamlessly in multiple roles, shifting between executive level communication, peer collaboration, and deep dive engineering work. Work closely with other senior engineers to ensure alignment, knowledge sharing, and collaborative problem solving. Blend architectural vision with hands on engineering delivery to support end-to-end solution implementation.

Requirements

18 - 20+ years of experience in large‑scale service provider or backbone network engineering.
Deep expertise with OSPF, ISIS, BGP, MPLS, Segment Routing, RSVP, and multicast protocols.
Hands‑on experience with major routing platforms including Cisco NCS/ASR/CRS, Juniper PTX/MX/QFX, Arista, white‑box solutions, and DriveNets.
Strong understanding of DWDM, 100G/400G optical transport, and ZR+ systems.
Proficiency with IOS, IOS‑XR, JunOS, and Arista EOS.
Strong programming and automation skills using Python, Perl, MySQL, InfluxDB, and telemetry stacks.
Experience building automation workflows leveraging OpenConfig and YANG models.
Deep operational understanding of production environments and the ability to diagnose issues under pressure.
Proven ability to lead multi‑year, multi‑site network architecture initiatives.
Demonstrated success in influencing vendor software/hardware roadmaps.
Strong technical depth with the ability to troubleshoot complex issues and immediately engage when something goes wrong.
Creative thinker capable of approaching problems from unconventional angles and designing innovative solutions.
Strong executive presence with polished communication skills suitable for senior‑level discussions.
Ability to learn quickly and adapt to new technologies and team processes.
Unique hybrid of architecture‑level strategy and engineering‑level technical execution.
Bachelor’s degree in Engineering, Computer Science, Information Systems, or related field (Master’s preferred).

Nice To Haves

CCIE, JNCIE, or equivalent expert‑level certification (active or inactive).
Prior publications, patents, RFC contributions, or industry speaking engagements (e.g., NANOG, SCTE).
Demonstrated ability to independently take architecture solutions from concept through production.

Responsibilities

Drives major national backbone initiatives, including software‑driven core networks, Segment Routing, and controller‑based traffic‑engineering solutions.
Leads definition, validation, and deployment of CLOS‑based architectures, multi‑plane designs, and disaggregated routing platforms.
Develops end‑to‑end IP architectures supporting services such as CRAN, Cloud DVR, VOD, multicast distribution, and commercial backhaul solutions.
Guides high‑capacity transport integrations including DWDM, 100G/400G optics, and ZR+ technologies.
Provides cross‑functional technical leadership across product, engineering, operations, and vendor teams while shaping long‑term technology roadmaps.
Oversees automation frameworks leveraging OpenConfig, YANG, and modern telemetry pipelines to standardize configuration and simplify large‑scale provisioning.
Serves as Tier‑4 escalation and SME for complex network issues, migrations, traffic shifts, M&A integrations, and large‑scale operational programs.
Mentors engineers at all levels, delivering internal training on routing technologies, automation, and tooling.
Lead highly technical, hands on engineering projects from concept through execution.
Collaborate effectively across a wide range of stakeholders, including senior leadership, peer architects, and downstream engineering teams.
Present complex technical and architectural concepts to senior leaders with clarity and confidence.
Translate high-level architectural strategies into actionable guidance for engineering teams at varying technical levels.
Operate seamlessly in multiple roles, shifting between executive level communication, peer collaboration, and deep dive engineering work.
Work closely with other senior engineers to ensure alignment, knowledge sharing, and collaborative problem solving.
Blend architectural vision with hands on engineering delivery to support end-to-end solution implementation.