Principal -Speed I​/O Architect; PCIe, CXL, UA Link

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

This will be a fast paced and exciting environment with opportunities to demonstrate your strategic and innovative thinking while directly chipping in to current projects.

Arm is proud to have a set of behaviors that reflect our culture and guide our decisions, defining how we work collaboratively to defy ordinary and shape extraordinary!

Partner and Customer Focus Collaboration and Communication Creativity and Innovation Team and Personal Development Impact and Influence Deliver on Your Promises We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

Our 10x mindset guides how we engineer, collaborate, and grow. Understand what it means and how to reflect 10x in your work: #LI-MS1 Salary Range:$262,700-$355,400 per year

We value people as individuals and our dedication is to reward people competitively and equitably for the work they do and the skills and experience they bring to Arm. Salary is only one component of Arm's offering. The total reward package will be shared with candidates during the recruitment and selection process.

Our 10x Mindset At Arm, we believe progress happens when people are empowered to think bigger and push beyond what seems possible. Our 10x mindset is about curiosity, ambition and creating impact that will be used by millions. We learn fast, prioritise collaboration and turn bold ideas into real technology. We look for people who are inspired by this way of working and want to grow in an environment where bold ideas are welcomed.

Discover how the 10x mindset shapes life at Arm:
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