OLIX - Staff Performance Modelling Engineer
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Requirements
• 5+ years building performance or power models for CPUs, GPUs, ASICs, or accelerators. • Strong coding ability in C++ and Python; experience with discrete-event or cycle-accurate simulators (e.g., gem5, SystemC, custom in-house). • Solid grasp of computer-architecture fundamentals: memory systems, interconnects, queuing theory, Amdahl/Gustafson analysis. • Familiarity with machine-learning workloads and common frameworks (PyTorch, TensorFlow, JAX). • Comfort reading RTL or schematics and discussing micro-architectural trade-offs with hardware designers. • Excellent data-visualisation and communication skills: able to turn millions of simulation samples into one decisive slide. • Bachelor’s+ in EE, CS, Physics, Applied Maths or related; advanced degree preferred but not required. • Personal or open-source projects in simulators, ML kernels, or performance analysis are a significant plus.
Responsibilities
• Project Ownership: Own and deliver projects on your team's roadmap that unlock key high-impact technical and business milestones that drive the success of Olix. • Project Ownership: • Collaboration: Work shoulder-to-shoulder with hardware, compiler and ML framework teams to ensure models reflect reality and reality meets performance goals. • Collaboration: • Functional Simulator: Design, build, and maintain a functional simulator of the OPTU subsystem and full pipeline. • Functional Simulator: • Performance Simulator: Design and maintain architectural & cycle-accurate models of the OPTU subsystems and pipeline. Identify throughput, latency and utilisation hot-spots; propose architectural, or scheduling fixes. • Performance Simulator: • Workload Analysis & Bottleneck Hunting: Instrument benchmarks (LLMs, diffusion, graph workloads) to collect detailed traces. • Workload Analysis & Bottleneck Hunting: • Design-Space Exploration: Run massive parameter sweeps with your functional and to understand tradeoffs and guide the software, hardware, and optical teams. Package results into clear, quantitative analyses and design recommendations. • Design-Space Exploration: • Tooling & Automation: Develop Python/C++ tooling for trace parsing, statistical analysis and visualisation. Integrate models into CI so that every RTL commit gets a performance smoke test. • Tooling & Automation:
Benefits
• Competitive Salary, commensurate with your experience, skills, and location. • Equity & Ownership: Meaningful stock options. You’re not just joining the mission; you’re owning a piece of it. • Proximity Bonus: We value your time. To minimise your commute and maximise your life, we offer a $42k CAD annual Living-Local Bonus if your residence is within 20 minutes of the office (Downtown Core Toronto) • Health & Wellbeing • Health & Wellbeing • Premium Healthcare: Comprehensive medical and dental cover • Time Off: 25 days of annual leave, plus all the Ontario bank holidays. • The Workspace & Tech • Elite Hardware: M4 Macs come as standard, with M4 Pro upgrades for our engineering team. We will provide whatever you need to do your best work. • Optimal Environment: High-spec noise-cancelling headphones and a fully ergonomic workstation designed for deep focus. • Life at the Office • Life at the Office • Chef-prepared meals: if you need to work late. • Relocation & Global Mobility • Visa Sponsorship: We hire the best in the world. We offer full UK and international visa sponsorship. • Seamless Relocation: Whether you’re moving across the country or across the globe, our dedicated relocation partner provides funding and concierge support to get you settled. • Due to U.S. export control regulations, candidates’ eligibility to work at OLIX depends on their most recent citizenship or permanent residency status. We are generally unable to consider applicants whose most recent citizenship or permanent residence is in certain restricted countries (currently including Iran, North Korea, Syria, Cuba, Russia, Belarus, China, Hong Kong, Macau, and Venezuela). Applicants who have subsequently obtained citizenship or permanent residency in another country not subject to these restrictions may still be eligible.
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