Jobs in the United States

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UAM Everfox Tool Engineer - Mid-level
System One
Lorton, VA
- $77 to $80 USD / hour
Experience with technical planning, system hardware-software-network design, development and integration, verification and validation, and fielding.
Added just now
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UAM Everfox Tool Engineer - Senior Level
System One
Lorton, VA
- $96 to $100 USD / hour
Experience with technical planning, system hardware-software-network design, development and integration, verification and validation, and fielding.
Added 1 min ago
RS
Senior Mechanical Designer, Field Service Technician
Retech Systems LLC
Buffalo, NY
- $30 to $43 USD / hour
/ Checks design and drafting work prior to Project Engineer approval to ensure requirements are satisfied.
Added 6 mins ago
Software Systems Engineer - HP IQ
HP
San Francisco, CA
HP IQ’s System Software team enables on-device experiences to take full advantage of our hardware capabilities. We collaborate with internal and external partners in a high-leverage…
Added 6 mins ago
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Storage Engineer
TEKsystems
San Diego, CA
- $65 to $80 USD / hour
DescriptionClient is seeking a hands-on Storage Engineer to design, integrate, validate, and support enterprise storage solutions for Data platforms. The role spans storage hardware,…
Added 13 mins ago
Junior Design Verification Engineer, Amazon Leo
Amazon Kuiper Manufacturing Enterprises LLC
Austin, TX · Sunnyvale, CA
· Work with the design and communication systems team and participate in system level verification using test benches constructed using UVM
Added 13 mins ago
Software Dev Engineer
Amazon.com Services LLC
Sunnyvale, CA
Design, develop, and optimize device OS frameworks and system services that power connectivity on Amazon devices, including cellular, location, and related wireless experiences. You'll own…
Added 14 mins ago
Turbine Engine Engineer
Avion Solutions
Huntsville, AL
Experience writing and reviewing AWIS, SSRAs, System Safety Management Plans, FMECA/FEMA, and Safety Design Requirements Definition.
Added 14 mins ago
Systems Engineer/MBSE
Avion Solutions
Huntsville, AL
Avion Solutions Inc., a 100% employee-owned company, is seeking candidates for a Systems Engineer/MBSE to support an Army Aviation Capability Program Executive (CPE). This position is…
Added 14 mins ago
Safety Engineer
Avion Solutions
Huntsville, AL
Provide system and safety engineering expertise to SMDC during the development of Army Laser Weapon technologies and systems during design, fabrication, and testing. This includes field…
Added 14 mins ago
Range Safety & Flight Termination Engineer
Avion Solutions
Huntsville, AL
Avion Solutions Inc., a 100% employee-owned company, is seeking candidates for a Range Safety & Flight Termination Engineer to support the Missile Defense Agency. This position is located…
Added 14 mins ago
Missile Flight Test Engineer
Avion Solutions
Huntsville, AL
Avion Solutions Inc., a 100% employee-owned company, is seeking candidates for a Missile Flight Test Engineer to support the US Army Space and Missile Defense Command. This position is…
Added 14 mins ago
Engineer
Avion Solutions
Huntsville, AL
Avion Solutions Inc., a 100% employee-owned company, is seeking candidates for an Engineer to support the Army Aviation Sustainment Division. This position is located in Huntsville, AL.
Added 14 mins ago
Architecture Engineer
Avion Solutions
Huntsville, AL
Utilize model-based environments for OEM CDRL reviews, encompassing requirements, verification, hazard assessments, system safety, architecture, maintenance analysis, and interface design.
Added 14 mins ago
Senior Test Systems Engineer – LabVIEW / HMI / Data Acquisition
Vidac Solutions
Fenton, MO
Vidac Solutions is a growing engineering and systems integration company based in Fenton, Missouri. We design and build custom industrial test systems, data acquisition systems,…
Added 14 mins ago
Controls Engineer (LabVIEW Specialist)
Vidac Solutions
Fenton, MO
…systems for manufacturing customers (Systems Integration and Design). Our team thrives on solving tough problems, delivering high-quality systems, and building lasting customer…
Added 14 mins ago
Senior Test Systems Engineer – LabVIEW / HMI / Data Acquisition
Priority Talent Partners
Fenton, MO
Vidac Solutions is a growing engineering and systems integration company based in Fenton, Missouri. We design and build custom industrial test systems, data acquisition systems,…
Added 14 mins ago
Controls Engineer (LabVIEW Specialist)
Priority Talent Partners
Fenton, MO
…systems for manufacturing customers (Systems Integration and Design). Our team thrives on solving tough problems, delivering high-quality systems, and building lasting customer…
Added 14 mins ago
Electrical Engineer – Arc Flash Studies
PowerTec Distribution & Motor Control Corporation
Tucson, AZ
We are seeking a motivated and experienced Electrical Engineer – Arc Flash Studies to join our manufacturing team in Arizona.
Added 14 mins ago
Project Engineer
Apex Companies
Oak Brook, IL
…customers, offering expertise in warehouse and industrial facility design, integration of material handling solutions, and optimization of efficiency. We also source and service forklifts,…
Added 14 mins ago
Project Engineer
Apex Companies
Charlotte, NC
…customers, offering expertise in warehouse and industrial facility design, integration of material handling solutions, and optimization of efficiency. We also source and service forklifts,…
Added 14 mins ago
Senior Full Stack Developer
Tru Treasury
United States
Collaborate with other engineers on system architecture and feature design
Added 15 mins ago
Staff Machine Learning Engineer - Mapping
General Motors
Bismarck, ND
We are looking for a Staff Machine Learning Engineer to serve as a technical leader for automated map reconstruction within our Mapping Engineering team.
Added 15 mins ago
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Principal Platform Software Engineer - JOIN OCI NASHVILLE!
Oracle
Bismarck, ND
- $104,500 to $234,600 USD / year
We are seeking a Principal Platform Software Engineer to help shape the architecture, query language, and distributed execution platform behind these capabilities. In this role, you will…
Added 15 mins ago
Software Engineer II
Amentum
Bismarck, ND
The Software Engineer II will perform full stack development with C# program, ReactJS, MVC, Linq, and rest API development in NET Core platform. This position is US remote teleworking…

SpaceXSI

Sr. Software Engineer, Kernels/CUDA (C++)

Palo Alto, CA, United States
Seattle, WA, United States

$200,000 - $375,000 USD

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Job details

Pay: $200,000 - $375,000 USD
Experience: 5+ years of experience with low-level system programming in C/C++
Posting language: English
Posted: Nov 4, 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. SOFTWARE ENGINEER, KERNELS/CUDA (C++)

We are building one of the world’s largest AI supercomputers from the ground up. As part of the Compute Infrastructure team, you will own both the raw GPU supercomputer and the platform layer that runs on top of it. You will work across the full stack - from low-level GPU kernel optimizations and Linux kernel internals to massive-scale orchestration and virtualization - to make training and inference at SpaceXSI as fast, reliable, and scalable as possible. This is a broad, high-impact role that combines hardcore supercompute and compute infrastructure work. Your contributions will directly accelerate Grok’s training speed and overall AI progress.

RESPONSIBILITIES:

Design, build, and optimize massive GPU clusters for extreme-scale training and inference workloads
Develop and tune low-level CUDA kernels (GeMM, Attention, etc.), using CUTLASS, Tensor Cores, and Nsight for maximum performance
Profile, debug, and eliminate bottlenecks across GPU memory hierarchy, networking fabric, filesystems, and multi-GPU operation
Collaborate closely with AI research teams to deliver production-grade performance and scalability

BASIC QUALIFICATIONS:

5+ years of experience with low-level system programming in C/C++

PREFERRED SKILLS AND EXPERIENCE:

Deep low-level systems programming (C/C++/PTX/SASS)
Strong experience with large-scale GPU clusters or distributed compute infrastructure at production scale
Hands-on work with GPU kernel optimization (CUTLASS, custom kernels, Nsight profiling)
Track record of building or running high-performance infrastructure for AI workloads (training or inference platforms)
Ability to reason from first principles and optimize for both memory-bound and compute-bound scenarios

COMPENSATION AND BENEFITS:

$200,000 - $375,000 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. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

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