Principal High-Speed I/O Architect (PCIe, CXL, UA Link)

Arm; San Jose (CA); On-site; USD 262,700 - 355,400; Full time

Benefits offered by this job

Partner and Customer Focus

Team and Personal Development

Creativity and Innovation

Job summary

Arm is seeking a High-Speed I/O Architect in San Jose, California, to define and design innovative on-chip interconnect architectures for scalable SoC platforms. This role includes responsibilities such as architecting high-speed interconnect subsystems like PCIe and CXL and collaborating with various teams to optimize performance and efficiency.

The ideal candidate has over 8 years of experience in the field, deep expertise in protocols, and a strong educational background in engineering. The position offers a competitive salary range and a focus on collaboration and innovation.

Qualifications

• 8+ years of experience with coherency protocols and system-level coherency architectures.
• Deep expertise in PCIe, CXL, and UA Link protocols and their functionalities.
• Strong knowledge in security, caching, and memory systems.

Responsibilities

• Architect high-speed interconnect subsystems including PCIe, CXL, and UA Link.
• Define IP and subsystem roadmaps for high-speed I/O technologies.
• Collaborate with performance, power, and physical design teams.

Skills

Coherency protocols

PCIe

CXL

UA Link

Heterogeneous compute

Education

Bachelor’s or Master’s degree in Electrical or Computer Engineering

Job description

Job Overview

At Arm, the High-Speed I/O Architect defines and designs innovative on-chip interconnect architectures—coherent and non‑coherent—for scalable SoC platforms. You will work across markets including mobile, automotive, datacenter, networking, and IoT, contributing to production‑quality silicon with top‑tier performance and efficiency. Collaborating with multi‑functional teams, you’ll shape the interconnect infrastructure that powers next‑generation SoCs.

Responsibilities

• Architect high‑speed interconnect subsystems—including PCIe, CXL, and UA Link—and define coherent and non‑coherent communication architectures across a range of silicon products.
• Define IP and subsystem roadmaps for high‑speed I/O and interconnect technologies in close partnership with SoC architecture and core technology teams.
• Lead early architecture engagements with customers, shaping system requirements and delivering clear, implementation‑ready specifications.
• Collaborate with performance, power, and physical design teams to optimize PCIe/CXL/UA Link subsystem behavior, bandwidth, latency, and overall system efficiency.
• Develop SoC architecture integrating Arm IP and high‑speed I/O subsystems to meet compute, memory, and interconnect performance targets.
• Partner with software, firmware, and platform teams to optimize end‑to‑end solutions spanning hardware, drivers, and system software.
• Support detailed use‑case exploration, workload analysis, and performance modeling to guide architectural decisions.

Required Skills and Experience

• 8+ years of experience with coherency protocols, hierarchical cache design, and system‑level coherency architectures.
• Deep expertise in PCIe, CXL, and UA Link protocols, including link‑level behavior, transaction flows, ordering models, memory expansion/pooling, die‑to‑die or chiplet connectivity, and host/device integration.
• Consistent track record collaborating with performance, power, and physical design teams on the PCIe, CXL, and UA Link stack.
• Strong knowledge in areas such as heterogeneous compute, PCIe/CXL/UA Link subsystem design, security, caching, memory systems.
• Demonstrated communication and leadership skills with the ability to influence executive stakeholders and multi‑functional teams.
• Bachelor’s or Master’s degree (or equivalent) in Electrical or Computer Engineering with 10+ years of experience in semiconductor architecture, design, or related roles.

Nice to Have Skills and Experience

• Ability to thrive in dynamic environments with shifting priorities.
• Constructive, strategic approach to challenge and improve status‑quo.
• Track record of delivering complex projects on time and to spec.

Benefits

• Partner and Customer Focus
• Collaboration and Communication
• Creativity and Innovation
• Team and Personal Development
• Impact and Influence
• Deliver on Your Promises

Salary Range

$262,700-$355,400 per year

Equal Opportunities

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.