Performance Modeling Engineer

MatX

$120K — $500K+*
US-AnywhereRemote in United States
Technical Services
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years in performance modeling
  • Expertise in LLM model architectures
  • Experience with AI accelerator computer architecture
  • Strong technical collaboration skills
  • Proficiency in automation and tool creation

Responsibilities

  • Translate AI accelerator architecture into performance models
  • Maintain and update modeling framework capabilities
  • Automate detailed tensor layout creation for LLMs
  • Develop tools and compilers to enhance organizational tech integration
  • Collaborate across teams to support machine learning workflows

Benefits

  • 4 weeks accrued PTO + 12 company holidays + remote work
  • Company-subsidized health insurance for employees and dependents
  • Up to 5% company contribution to retirement plans
  • $1500 annual professional development budget
  • Onsite meals provided Monday - Friday
  • 100% reimbursement for daily commute expenses
  • $50 monthly perk allowance
  • Cell and internet reimbursement of $75/month combined
  • Up to $1000 for remote home office setup
  • 100% paid mental health benefits
  • 12 weeks paid parental leave and flexible return-to-work options
Full Job Description
What You'll Do Here:
  • Translate AI accelerator architecture into performance models
  • Maintain modeling framework capabilities and releases
  • Automate creation of detailed tensor layouts for frontier LLMs
  • Create tools, compilers, and automations to integrate with the broader organization tech stack
  • Collaborate with ML, Software, and Architecture teams to support experiments and workflows
Who You Are:
  • Strong background in performance modeling
  • Strong working knowledge of latest LLM model architectures
  • Experience with computer architecture, particularly AI accelerators
Compensation

The US base salary for this full-time position is determined based on a variety of factors including role, experience, location, job related skills, and relevant education and training. Career length is only a guideline for compensation.
  • Early Career - $120,000 - $275,000 + equity
  • Mid Career - $175,000 - $450,000 + equity
  • Senior Career - $275,000 - $600,000 + equity

What We Offer
  • Time off: 4 weeks PTO (accrued) + 12 company Holidays + up to 3 weeks remote work
  • Health: Company-subsidized Medical (Kaiser or Anthem) for employees & dependents, Guardian Dental and Vision insurances for employee & dependents, and life insurance (employee only), plus HSA and FSA offerings via Lively.
  • Financial Wellbeing: Choose from Roth IRA or 401K (or both) retirement plans with up to 5% company contribution to 401K (even if you don't contribute). Also, 100% company-paid life insurance (up to $300K) and long-term disability insurances.
  • Professional Development: $1500 Professional Development Budget (per year)
  • Team Meals: MatX provides onsite team lunch & dinner Monday - Friday, with your choice of ordering via WeBox, Specialty's or via our reimbursement system
  • Commute on Us: Commute on our company Uber account, or reimburse your train rides. Either way, we pay 100% for your daily commute.
  • MatX E[x]tras: $50/mo to use on the perk you value most
  • Cell & Internet Reimbursement: $35/mo for cellular and $40/mo for wifi
  • Remote Home Setup: Use our Amazon business account for up to $1000 in office setup purchases.
  • Mental Wellbeing: 100% paid mental health benefit via SpringHealth and Guardian EAP.
  • Support to Parents: Up to 12 weeks paid parental leave regardless of path to parenthood, 10 weeks pregnancy disability leave, flexible return-to-work hours, and Benepass reproductive health & parental benefit.

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