Verification Engineer

Fractile is building silicon, systems and software which will redefine the frontier of AI: running the world's most advanced models at radically higher speed and lower cost. We have an exceptional team across hardware and software capable of bringing about this change, and we are growing fast to meet demand and deliver our product at scale.

Our ideal candidate could have 0-3 years' experience, including recent graduates. This is a unique opportunity to accelerate your development, working with an experienced and collaborative team and gaining exposure to a broad range of disciplines. At Fractile, we value ideas from everyone, regardless of title or tenure, and we believe the best engineering happens when people share, question, and learn together. You'll be joining a culture where your curiosity is encouraged, your input matters, and there's real room to grow.

As a Silicon Verification Engineer, you will be reporting to the Director of Frontend Silicon and will be based in either our Bristol or London office in the UK. We are looking for you to take an active role in building world-class ML/AI IC products for scale-out to data centre applications. We are looking for someone who is passionate about verification – not someone content to go through the motions, but rather looking to push the field further forwards. If you get excited about bringing software concepts to hardware workflows, and enjoy improving established practices to increase tape-out quality and bring down costs, then this is the role for you.

You'll work closely with colleagues across modelling, system architecture, and RTL design to ensure our RTL releases meet the highest standards of functional quality. That includes contributing to discussions around specification, architecture, and the workflows that connect them. Your work will be integral to delivering our highly disruptive and ambitious product.

We look for engineers with the following mindset:

• Software mindset for solving hardware problems
• The desire to be in a high impact role in a small team
• A disrupter of the "status quo" of hardware development
• Eagerness to contribute to and improve working practices and help build connections between hardware and software teams
• Detail-focused, with rigour as the baseline for all work
• Humility, desire to learn
• Happy to be part of a fast-paced, open and collaborative environment

Required skills and experience:

• Strong software skills
  • Python preferred, other languages acceptable
• Understanding of digital hardware concepts
  • Ability to read and debug RTL in SystemVerilog
  • Familiarity with debugging waveforms

Desirable skills and experience:

• Pre-silicon RTL verification
  • Verification planning and execution from specification
  • Building testbenches
  • Stimulus creation
  • Functional modelling of hardware blocks
  • Checker creation
  • Coverage definition/closure
• Transaction-Level Modelling
  • Whether in UVM, SystemC or another methodology
• SystemVerilog Assertions (SVA)
• Software fluency in multiple languages
• Open source tools for silicon development
  • Cocotb (used for all our testbench collateral), Verilator, Icarus Verilog
• Commercial EDA tools
• Formal verification
• Working in a monorepo environment alongside software
  • Bazel is our chosen tool, familiarity is not expected
• Contributing to architecture discussion

How we work

• Ownership and execution: you will have full agency to drive your work forward
• Rapid iteration: we all work directly with top leadership to move from idea to hardware on ambitious timelines
• Full-stack engagement: hardware, software, silicon, and modelling teams all work closely together to create a product with generational impact
• Optimistic and pragmatic: we possess the will to win, and to do the hard work to get us there
• Team player mentality: the mission is bigger than any of us, and we have the curiosity and technical focus to see the best idea shipped, no matter who's it is

About us

• Founded in 2022, team of 70+ which is expanding rapidly
• Modern, open offices in London and Bristol
• Collaborative, problem-solving culture built on deep curiosity, entrepreneurial initiative and technical fluency

Export control and security clearance

Certain roles may involve working on technologies subject to export restrictions. Applicants may be required to undergo additional eligibility checks to ensure compliance with applicable law.