OLIX · 21 hours ago
Staff Performance Modelling Engineer
San Francisco, CA
Full-time
Onsite
Senior Level, Lead/Staff
$279K/yr - $341K/yr
7+ years expOLIX is building the next paradigm in AI technology with their Optical Tensor Processing Unit (OTPU). They are seeking a Staff Performance Modelling Engineer to create and own analytical and simulation models that guide OTPU architecture and software evolution, ensuring performance goals are met through collaboration and data-driven decision-making.
Semiconductors
Responsibilities
Ownership: Define and deliver the technical vision and roadmap for your team that unlocks key strategic technical and business goals that are essential to the success of Olix
Collaboration: Partner closely with all engineering teams to help shape our overall system architecture and delivery while ensuring models reflect reality and reality meets performance goals
Champion Modelling: Educate peers on modelling methodology and champion data-driven design culture
Functional Simulator: Design, build, and maintain a functional simulator of the OPTU subsystem and full pipeline
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
Workload Analysis & Bottleneck Hunting: Instrument benchmarks (LLMs, diffusion, graph workloads) to collect detailed traces
Design-Space Exploration: Run massive parameter sweeps with your functional and to understand tradeoffs and guide the software, hardware, and optical teams
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
Qualification
Required
7+ years building performance or power models for CPUs, GPUs, ASICs, or accelerators
Proven track record providing technical leadership to a team of 5~10 engineers, resulting in significant business impact
Strong coding ability in C++ and Python; experience with discrete-event or cycle-accurate simulators (e.g., gem5, SystemC, custom in-house)
Strong 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
Preferred
Advanced degree preferred but not required
Personal or open-source projects in simulators, ML kernels, or performance analysis are a significant plus
Benefits
Equity & Ownership: Meaningful stock options. You’re not just joining the mission; you’re owning a piece of it.
$36k annual Living-Local Bonus if your residence is within 20 minutes of the office.
33 days of paid time off (PTO), including US federal holidays.
Healthcare Coverage: Multiple high-quality medical plan options, including family coverage.
Health Savings Account: A high-deductible medical option with a company-funded health savings account (HSA).
Dental & Vision: Dental and vision coverage.
Additional Coverage: Life insurance, plus short- and long-term disability.
Wellbeing Support: Mental health resources, fertility and family-building support.
Commuter Benefits: Pre-tax commuter and parking benefits.
401(k): Access to a 401(k) retirement plan with a 4% employer match, with both traditional and Roth contribution options. Employees also have access to a dedicated financial advisor to support portfolio selection and long-term planning.
Chef-prepared meals: if you need to work late.
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.
Company
OLIX
OLIX is building the infrastructure for Frontier AI. (Formerly operating as Flux)
51-200 employees
Funding
Current Stage
Growth StageCompany data provided by crunchbase