Jobs in the United States

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Added just now
CMC Mechanical Analysis Lead Engineer
GE Aerospace
Minnetonka, MN
The Lead Engineer will be responsible for supporting and leading mechanical analysis projects for CMC hot section hardware and/or interfacing metallic components with specific focus on…
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GA
Director, Architecture and Data
GE Aerospace
Minnetonka, MN
- $152,000 to $202,000 USD / year
…and owns the foundation for how Defense & Systems architects software environments and delivers a data fabric that enables the use of…
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CM
Quality Engineer II
Cirtec Medical Corporation
Brooklyn Park, MN
- $80,000 to $95,000 USD / year
Training or equivalent experience in computer use and software-Microsoft Word, Excel, Power Point and Access.
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Embedded Systems Engineer - ATL / Eagan MN
Lockheed Martin
Eagan, MN
This role involves software, firmware, gateware, and/or hardware design to support the development of radio-frequency (RF), photonic, and/or advanced computing systems. Your key…
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Senior .NET Full Stack Engineer with C#
Cognizant
Saint Paul, MN
- $86,000 to $99,000 USD / year
As a Senior .NET Full Stack Engineer with C#, you will make an impact by designing and developing scalable enterprise applications that support healthcare payer operations, including…
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Senior Full Stack Engineer – .NET & C#
Cognizant
Saint Paul, MN
- $86,000 to $99,000 USD / year
As a Senior Full Stack Engineer – .NET & C#, you will make an impact by designing and developing scalable enterprise applications that support healthcare payer operations, including…
Added just now
C
Senior Java Full Stack Engineer – Spring Boot & AWS
Cognizant
Saint Paul, MN
- $86,000 to $99,000 USD / year
As a Senior Java Full Stack Engineer – Spring Boot & AWS , you will make an impact by designing and delivering scalable, secure, cloud-based applications using Java, Spring Boot, React, and…
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Senior Network Engineer
Cognizant
Saint Paul, MN
We are seeking an experienced Senior Network Engineer to design, implement, secure, operate, and optimize enterprise data-center, campus, branch, wireless, and hybrid-cloud networks. The…
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Senior Workday Security Engineer
CVS Health
Saint Paul, MN
CVS Health is seeking an experienced Senior Workday Security Engineer to join the HR Technology Workday Security team. This role designs, supports, governs, and optimizes security across…
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Gemini Enterprise for CX Sr. Engineer
Accenture
Minneapolis, MN
- $94,400 to $266,300 USD / year
A hands-on Senior Engineer with strong experience in Google’s Gemini Enterprise for Customer Experience (GECX) Solutions - now building deep expertise in Google Cloud Platform (GCP). You…
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Internship - Geotechnical Engineer (Hybrid)
Barr Engineering Co.
Minneapolis, MN
- $22.66 to $30.46 USD / hour
Software: Microsoft Windows OS and Microsoft Office software.
Added just now
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Internship - Geotechnical Engineer - 6 Month (Hybrid)
Barr Engineering Co.
Minneapolis, MN
- $22.66 to $30.46 USD / hour
Barr is seeking a geotechnical engineer intern to join our innovative and collaborative team of over 90 geotechnical engineers and geologists. In this hybrid role, you will support the…
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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 just now
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 1 min ago
Engineer II, Google Cloud
PwC
Minneapolis, MN
As a Engineer II, Google Cloud you will contribute to the design, build, testing, and optimization of cloud-native applications on Google Cloud, supporting work across the full software…
Added 1 min ago
EG
Front End React Engineer
Eliassen Group
Saint Paul, MN
- $80 to $90 USD / hour
Our client seeks an experienced Front End React Engineer to join a small, focused team building features across three SaaS products in consumer goods retail. Global brands and retailers…
Added 5 mins ago
SI
Forward Deployed Engineer Specialists (FDE) (Mid/Senior Level)
Salesforce, Inc.
NY
- $148,500 to $285,800 USD / year
You have 3+ years (6-10 years for Senior levels) of software engineering or technical delivery experience, with at least one production system you'd be proud to walk us through - ideally in…
Added 18 mins ago
Software Engineer, Bugbot
SpaceXAI
New York, NY · San Francisco, CA
We're hiring a Software Engineer to work on Bugbot. Bugbot reviews pull requests, catches bugs, suggests improvements, and is becoming a critical part of how engineering teams ship…
Added 18 mins ago
Model Engineer
SpaceXAI
Palo Alto, CA
- An excellent programmer and software engineer, comfortable working across the research stack in Python and PyTorch or JAX
Added 18 mins ago
Software Engineer, Compute Infra
SpaceXAI
San Francisco, CA · New York, NY
As a Software Engineer on Compute Infra at SpaceXSI, you'll build the sandbox infrastructure that gives every agent its own VM. These VMs power coding agents, Grok Bot, reinforcement…
Added 18 mins ago
Software Engineer, Client Infrastructure
SpaceXAI
San Francisco, CA
As an Engineer on the Client Infrastructure team at SpaceXSI, you'll design and build the systems that make our desktop experience performant and stable for millions of developers. You'll…
Added 18 mins ago
Software Engineer, Billing
SpaceXAI
San Francisco, CA · New York, NY
We're hiring a Software Engineer, Billing to evolve the systems that power how Cursor charges and reconciles revenue across millions of developers and enterprise teams. You will work across…
Added 21 mins ago
EG
Front End React Engineer
Eliassen Group
Dover, DE
- $80 to $90 USD / hour
Our client seeks an experienced Front End React Engineer to join a small, focused team building features across three SaaS products in consumer goods retail. Global brands and retailers…
Added 25 mins ago
Sr Engineering Manager
MED Medtronic Inc
Tempe, AZ
…standing as the world’s top medical device company. Help us engineer the extraordinary! Do meaningful work, make a difference, and improve lives - starting with your…
Added 33 mins ago
Senior Data Engineer - MongoDB and PostgreSQL
CVS Health
Remote, United States
Senior Data Engineer will design, build, and support a near real-time transactional cache platform that enables APIs, digital experiences, and downstream services to consume operational…

SpaceXAI

Model Engineer

Palo Alto, CA, United States

$160,000 - $250,000 USD

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Job details

Pay: $160,000 - $250,000 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.

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:

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:

$160,000 - $250,000 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.

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