Director, Silicon Logical Design

About the Position

Director, Silicon Logical Design

Bristol, UK; Cambridge, UK

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About Graphcore

At Graphcore, we’re building the future of AI compute.

We’re a team of semiconductor, software, and AI experts, with deep experience in creating the complete AI compute stack - from silicon and software to infrastructure at datacenter scale.

As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.

To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world.

We are bringing together the brightest minds to solve the toughest problems, in a place where everyone has the opportunity to make an impact on the company, our products, and the future of artificial intelligence.

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Job Summary

We are seeking a Director of Silicon Logical Design to lead and scale our Logical Design group within the Silicon department. This role is accountable for the overall strategy, technical direction, execution quality, and team development for Graphcore's microarchitecture and RTL design efforts.

The Director will be responsible for ensuring that our logical design methodologies, architectures, and RTL implementations meet world-class standards for performance, power, area, and schedule. This leader will partner closely with Architecture, Physical Design, Verification, DFT, and Program Management teams to ensure successful, predictable silicon delivery aligned with Graphcore's long-term product roadmap.

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Responsibilities and Duties

Leadership & Strategy

• Define and execute the strategic roadmap for Logical Design, ensuring alignment with Graphcore's silicon and product strategy.
• Lead, grow, and mentor a high-performing RTL/microarchitecture design organization.
• Establish and implement best-in-class design methodologies, documentation standards, and quality metrics.
• Drive continuous improvement across team structure, workflows, tooling, and design processes.

Technical Ownership

• Provide technical oversight of microarchitecture specification and RTL development across all major blocks and subsystems.
• Guide architectural feasibility studies, contribute to architectural trade-offs, and microarchitecture definition.
• Oversee the integration of third-party IP, complex application-specific blocks, and high-performance custom designs.
• Ensure robust design sign-off through high-quality linting, synthesis, CDC/RDC, timing closure, and coverage metrics.

Cross-Functional Collaboration

• Partner closely with Physical Design, Verification, DFT, Architecture, and Program Management teams to ensure cohesive planning and execution.
• Foster strong communication across teams and global sites, ensuring alignment on priorities, risks, and deliverables.
• Support silicon bring-up and debug efforts by providing expert guidance and deep understanding of RTL behavior and architecture.

Execution & Delivery

• Own the delivery of high-quality, on-schedule RTL for multiple parallel silicon programs.
• Establish scalable project planning and tracking practices, including resource planning and risk mitigation.
• Champion design automation and infrastructure improvements to accelerate productivity and improve design quality.

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Requirements

Essential Skills & Experience

• Degree in Computer Science, Electrical Engineering, or a related field; advanced degree preferred.
• Extensive experience in digital logical design, micro-architecture, and RTL development for large-scale, high-performance silicon projects.
• Proven success leading and developing technical teams in a semiconductor environment.
• Deep expertise in SystemVerilog or VHDL and familiarity with modern digital design flows.
• Strong ability to diagnose and resolve complex design issues, including via scripting/programming (Python, Tcl, etc.).
• Demonstrated excellence in cross-functional leadership and communication across global teams.
• Strong organizational skills with the ability to manage multiple priorities and drive execution in fast-paced environments.

Desirable Experience

• Processor or accelerator microarchitecture.
• High-speed serial interfaces and complex, high-bandwidth IP blocks.
• Arithmetic pipeline design and floating-point datapaths.
• Advanced synthesis, timing analysis, power analysis, and logical equivalence checking.
• Design-for-test methodologies.
• Power integrity and silicon device-level understanding.
• Experience with silicon bring-up and post-silicon validation.
• Program planning and multi-project execution leadership.

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We Offer

• Opportunity to work in a cutting-edge AI company.
• Be part of a team that is shaping the future of AI compute.
• Competitive compensation package.
• Collaborative and innovative work environment.

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About the Company

At Graphcore, we are dedicated to building the future of AI compute. Our team is composed of semiconductor, software, and AI experts who are passionate about creating the complete AI compute stack. As part of the SoftBank Group, we have the backing and resources to deliver key technology into the fast-growing SoftBank AI ecosystem. Join us in our mission to bring together the brightest minds to solve the toughest problems and make a significant impact on the future of artificial intelligence.