Sr Principal Systems Engineer - Avionics Network Architect (Hybrid)

Date Posted: 2026-08-24 Country: United States of America Location: US-IA-CEDAR RAPIDS-131 ~ 5450 C Ave NE ~ BLDG 131 Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here. https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62 Security Clearance Type: None/Not Required Security Clearance Status: Not Required At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense. Architect the Next Generation of Avionics Networking The Computing Products Department (CPD) at Collins Aerospace   is building a next‑generation family of safety‑critical avionics Ethernet switches—and   we’re   looking for a Sr Principal Systems Engineer who wants to shape the networking architecture that future   aircraft   will rely on for decades. This role sits at the center of systems architecture, embedded networking, silicon strategy, firmware, software, safety, and cybersecurity. If you want to help define what comes after today’s AFDX‑based networks, this is the opportunity.   What You Will   Do: Architect the Next Generation of Avionics Networking Products   You will lead the architecture for a scalable family of deterministic avionics Ethernet switches—defining the technical roadmap, reusable building blocks, interfaces, configuration strategy, and engineering principles guiding multiple future platforms.   You’ll   drive architectural decisions across:   Port count, topology, bandwidth, latency, jitter, buffering   Redundancy and availability strategies   Switch silicon, processors, memory, PHY/SerDes technologies   Copper/fiber interfaces, packaging, power, and thermal constraints   Hardware/software/firmware partitioning and growth paths    Lead the Evolution from AFDX to Deterministic Ethernet & TSN   You will define architectures that integrate today’s ARINC 664 Part 7 / AFDX with emerging deterministic Ethernet technologies such as TSN, IEEE 802.1DP/SAE AS6675, advanced time synchronization, QoS, mixed ‑ criticality traffic, and network health monitoring .   Engineer Deterministic Performance   You will lead analyses to prove the architecture delivers deterministic performance:   End ‑ to ‑ end latency, worst ‑ case timing, traffic flow   Buffer/queue behaviors, packet loss, burst analysis   Multicast load, congestion behavior   Failure detection, network recovery timing   Synchronization accuracy, scalability, capacity   Technical Leadership Across Disciplines   This role requires coordinating hardware, software, firmware, systems, test, safety, and cybersecurity engineering—guiding how all disciplines contribute to one coherent networking architecture. You will mentor networking engineers, shape design patterns, lead major reviews, and engage across customer, supplier, and cross ‑ functional teams.   Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field The strongest candidates will have   significant experience   in several of the following areas:   Avionics network architecture and deterministic networking   Ethernet switching, bridging, Layer 2/3, IP networking   VLANs, QoS, priority management, multicast   Traffic policing/shaping, redundancy, sync   Switch/router/NIC/gateway configuration   Network performance analysis, packet capture, troubleshooting   Network simulation and automated testing   Embedded HW/SW integration   Requirements development, system architecture, interface definition   Integration, verification & validation, trade studies, root‑cause analysis   Qualifications We Prefer: Particularly relevant experience includes:   ARINC 664 Part 7 / AFDX   IEEE 802.1 TSN, aerospace TSN (IEEE 802.1DP / SAE AS6675)   Precision time synchronization   Fault ‑ tolerant   Ethernet,   mixed ‑ criticality   networking   Gigabit/multi ‑ Gigabit   embedded Ethernet   Network switch ASICs, network processors, FPGA packet processing   PHY/SerDes architecture   Network configuration/management architectures   Network telemetry, diagnostics, Wireshark   Traffic ‑ generation   and   performance ‑ test   equipment   Hardware ‑ in ‑ the ‑ loop   and systems integration labs   DO ‑ 178C, DO ‑ 254/AC 20 ‑ 152A, ARP4754A/B, DO ‑ 326A Reusable   safety ‑ critical   platform development   What We Offer Benefits Some of our competitive benefits package includes:    Medical, dental, and vision insurance   Three weeks of vacation for newly hired employees   Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option   Tuition reimbursement program  Student Loan Repayment Pr