Sr. Model Engineer, Model Training

SpaceX Super Intelligence; Austin (TX); On-site; USD 180,000 - 600,000; Full time

Benefits offered by this job

Equity

Medical insurance

Dental insurance

401(k)

Disability insurance

Life insurance

Discounts and perks

Job summary

SpaceXSI is building a Super Intelligence stack to help humanity understand the universe. We seek engineers with production-grade Python, PyTorch, JAX, Rust, or C++ experience and the ability to train very large models (1B+ parameters).

The role offers a highly meritocratic environment and the chance to contribute to models used by millions of users. Compensation ranges from $180,000 to $600,000 USD, plus equity and a full benefits package including medical, dental, 401(k), disability, and life

Qualifications

• Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++.
• Experience training large models (1B+ parameters)

Skills

Python

PyTorch

JAX

Rust

C++

Job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.
SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.

BASIC QUALIFICATIONS:

• Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++
• Experience training large models (e.g., pretraining, post-training, fine-tuning, or RL training of neural networks with 1B+ parameters)

PREFERRED SKILLS AND EXPERIENCE:

• Experience training models used by millions of users
• Power user of AI models
• You believe truth-seeking AI is the most important and challenging problem
• You take pride in your work and thrive in meritocratic environments
• You are obsessed about building incredibly useful models

COMPENSATION AND BENEFITS:

$180,000 - $600,000 USD

Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.

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