Jobs in the United States

25+ jobs

Save this search

Added 6 mins ago
Fabrication Wet Etch Engineer, Quantum AI
Google
Goleta, CA
Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, Physics, or a specialized field (e.g., Optics, Sensors, Audio/DSP, etc.), or equivalent practical…
Added 10 mins ago
Systems Engineer
HPE
All, MN
…companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive…
Added 10 mins ago
Site Reliability Engineer
HPE
Sunnyvale, CA
…companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive…
Added 10 mins ago
Mechanical Design Engineer
HPE
Roseville, CA
…companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive…
Added 10 mins ago
Lead, Software Engineer - Backend /Integration - TS/SCI
L3Harris Technologies
Patrick Air Force Base, FL
Job Title: Lead, Software Engineer - Backend/Integration
Added 16 mins ago
Sr. Model Engineer
SpaceXAI
Palo Alto, CA
…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…
Added 16 mins ago
Software Engineer, New Grad 2027
SpaceXAI
San Francisco, CA · New York, NY · Palo Alto, CA
…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…
Added 22 mins ago
District Engineer
Department of Transportation
Mecklenburg County, NC
…supervision in highway engineering. Serves as the District Engineer for Mecklenburg County. Will manage and coordinate construction and contract administration within the District. Directly…
Added 25 mins ago
CO
Senior Civil Engineer Supervisor (Transportation)
Commonwealth of Pennsylvania
Uniontown, PA
- $80,646 to $104,959 USD / year
Help shape the future of transportation projects across Pennsylvania! As a Senior Civil Engineer Supervisor (Transportation) with the Department of Transportation, you will lead complex…
Added 26 mins ago
Mechanical Engineer II (Product Improvement Engineering)
Life Fitness, LLC
Ramsey, MN
Are you a Mechanical Engineer, passionate about fitness, and looking to gain hands-on experience and grow your skills? Life Fitness / Hammer Strength is looking for a Mechanical Engineer II…
Added 26 mins ago
CONTINUOUS IMPROVEMENT ENGINEER
Wells Concrete Products, Inc.
Albany, MN
The Continuous Improvement (CI) Engineer leads and facilitates continuous improvement initiatives across the precast concrete manufacturing operation. This position drives operational…
Added 26 mins ago
Quality Engineer (Level DOE)
Doosan Bobcat North America, Inc.
Rogers, MN
The Quality Engineer position is responsible for monitoring and driving improvements to the quality of components or products produced in their area of responsibility, and may involve…
Added 26 mins ago
Senior Cloud Engineer
Eide Bailly
Minneapolis, MN
The Cloud Senior Engineer is responsible for supporting complex engineering initiatives across the Microsoft cloud environment, with a primary focus on Microsoft Dynamics 365 CRM, the Power…
Added 26 mins ago
Senior Cloud Engineer
Eide Bailly
Minneapolis, MN
The Cloud Senior Engineer is responsible for supporting complex engineering initiatives across the Microsoft cloud environment, with a primary focus on Microsoft Dynamics 365 CRM, the Power…
Added 32 mins ago
Hardware Engineer, Networking Switch Bring Up and Rack Level Performance Validation
Advanced Micro Devices, Inc
Santa Clara, CA
Bachelor’s or master’s degree in electrical engineering, Computer Engineering, or related field preferred.
Added 32 mins ago
Devops Platform Engineer
Advanced Micro Devices, Inc
San Jose, CA
We are seeking a hands-on Platform Engineer to build and operate the infrastructure foundations that enable engineering teams to deliver reliable, scalable, and secure products. This role…
Added 32 mins ago
Principal Semiconductor Packaging Technologist – Customer Solutions
Advanced Micro Devices, Inc
San Jose, CA
We are looking for a Principal Packaging Integration Engineer who can do two things exceptionally well: drive technically sound packaging architecture decisions and be the trusted…
Added 39 mins ago
Senior API & Integration Engineer
Vast Bank
Remote, United States
Vast Bank is looking to hire an Senior API & Integration Engineer!
Added 44 mins ago
Model Engineer
SpaceXAI
Palo Alto, CA
…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…
Added 44 mins ago
ASIC Design Engineer, Cloud TPU
Google
Sunnyvale, CA
Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, a related field, or equivalent practical experience.
Added 59 mins ago
ET
Machine Learning Data Engineer
EdgeQ Technologies Private Limited
Remote, United States
- $110,000 to $175,000 USD / year
We are seeking a skilled and experienced Machine Learning Data Engineer to join our growing AI and Data Engineering team in the United States. The ideal candidate will be responsible for…
Added 59 mins ago
ET
GIS Software Engineer
EdgeQ Technologies Private Limited
Remote, United States
- $75,000 to $135,000 USD / year
We are seeking a talented and detail-oriented GIS Software Engineer to join our technology team in the United States. The ideal candidate will be responsible for developing, implementing,…
Added 1 hour ago
Process Engineer 5
Lam Research
Tualatin
As a Process Engineer at Lam, you will operate on cutting-edge technology, harnessing atomic precision, material science, and surface engineering to push technical boundaries. Your role…
Added 1 hour ago
Lead Full Stack Java Engineer
Wells Fargo Bank, N. A.
CHARLOTTE, NC
Wells Fargo is seeking a highly skilled and hands-on Lead Engineer to drive the end-to-end delivery of strategic lending technology solutions supporting new product launches and feature…
Added 1 hour ago
Cloud Engineer SME
Ignite IT
Remote, United States
We are seeking a highly skilled Cloud Engineer Subject Matter Expert (SME) to join our team. The Senior Cloud Engineer (Cloud Engineer SME) is the senior technical implementation lead…

SpaceXAI

Sr. Model Engineer

Palo Alto, CA, United States

$220,000 - $357,000 USD

Apply About employer

Applications open in a new tab.

Job details

Pay: $220,000 - $357,000 USD
Posting language: English
Posted: Nov 9, 2026

Original 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.

Sr. Model Engineer

SpaceXSI is building Super Intelligence to help humanity understand the universe. We train frontier coding agents and scale RL on real user data to make them increasingly effective. We're looking for Research Scientists who can drive effective RL or mid-training research in a small-team setting. You'll own ambiguous, hard research problems end-to-end: forming hypotheses, designing experiments, building the training/eval/data needed to test them, and pushing results into the next model.

RESPONSIBILITIES:

Design and run rigorous experiments that turn research ideas into measurable gains in model capability
Improve data recipes through data quality, deduplication, and mixture experiments
Define what makes RL data and rewards good, including grader design and preventing reward hacking
Advance training science, from architecture and scaling experiments to post-training recipes for coding and computer-use agents
Build evals and targeted tasks that expose model weaknesses and guide where the team invests next
Partner with engineers to take promising results from small experiments to frontier-scale training runs

BASIC QUALIFICATIONS:

3+ years of hands-on experience training or post-training large neural networks (1B+ parameters), including work on pre-training, fine-tuning, or RL-based methods (e.g., RLHF, DPO).
Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++

PREFERRED SKILLS AND EXPERIENCE:

Able to handle ambiguous research tasks with little guidance, and to own a research direction end to end
Care an unusual amount about data quality, and can dive into the data when appropriate
Truth seeking, aiming to learn more about the science than to prove your ideas are correct
Experience with RL algorithms for language models, scaling laws, or building RL environments and evals
Experience with distributed training at scale and debugging problems that only show up at scale
Experience training frontier-scale models
Strong background in RL and machine learning fundamentals
An excellent programmer and software engineer, comfortable working across the research stack in Python and PyTorch or JAX
Hands-on experience training large models, through pretraining, post-training or RL
A track record of original work in ML, such as new methods or real improvements, shown through research, open source or production impact
MS or PhD in CS, ML, math, physics or a related field, or equivalent research experience

ADDITIONAL REQUIREMENTS:

Onsite role: must be able to work in person at the Palo Alto office

COMPENSATION AND BENEFITS:

The annual compensation range for this role is listed below.

Annual Salary:

$220,000 - $357,000 USD

Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

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.

Apply About employer

Report this job