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Senior Vehicle Power Electronics Engineer
Anduril Industries
Santa Ana, CA · Costa Mesa, CA
Experience with converter topology selection and efficiency optimization
Added 1 min ago
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Remote Design Engineer
GPAC
Houston, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
Dallas, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
Austin, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
El Paso, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
San Antonio, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
Lubbock, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
Killeen, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
Corpus Christi, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 1 min ago
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Remote Design Engineer
GPAC
McAllen, TX
- $70,000 to $130,000 USD / year
Job Summary: The Metal Building Design Engineer is responsible for the structural design, analysis, and optimization of pre-engineered metal buildings to ensure compliance with industry…
Added 9 mins ago
Distinguished Engineer, AI Security Systems (Remote)
CrowdStrike
Montpelier, VT
We are seeking a Distinguished Engineer who has built AI and security systems that operate in the real world and stop real adversaries.
Added 9 mins ago
Senior AWS Cloud Engineer
Serco
Montpelier, VT
Looking for a Senior Cloud Engineer opportunity in an environment where you can make an impact every day? Discover this great opportunity with the Center for Medicare and Medicaid Services…
Added 9 mins ago
Senior Network Engineer
Cognizant
Montpelier, VT
Cognizant is seeking a Senior Network Engineer to design, implement, secure, operate, and optimize enterprise datacenter, campus, branch, wireless, and hybrid-cloud networks. This role…
Added 20 mins ago
Distinguished Engineer, AI Security Systems (Remote)
CrowdStrike
Trenton, NJ
We are seeking a Distinguished Engineer who has built AI and security systems that operate in the real world and stop real adversaries.
Added 30 mins ago
Data Warehouse/Microsoft Fabric Engineer
Parsons Transportation Group
Remote, United States
We are seeking a Data Warehouse Engineer to design, develop, and maintain scalable data warehouse solutions that support analytics, reporting, and application development. This role will…
Added 37 mins ago
Senior AI Engineer, Banking Technology
Citi
JERSEY CITY, NJ · Jersey City, NJ · Jersey City
Citi’s Banking Technology organization is seeking a highly hands-on Senior AI Engineer to design, build, and deploy cutting‑edge AI solutions for Investment, Corporate, and Commercial…
Added 43 mins ago
Sr Mechanical Engineer
Leidos
Albuquerque, NM
Leidos Defense Systems is seeking a highly motivated Sr Mechanical Engineer who loves collaboration and being a part of something big, to join our team. This role drives the implementation…
Added 49 mins ago
Applications Architect (Enterprise Modernization & Cloud Migration) - (Active Top Secret/SCI Eligibility)
Akima, LLC
Alexandria, VA
Microsoft Azure certification (e.g.,Azure Developer Associate, Azure DevOps Engineer Expert, Power Platform App Maker, Power Platform Solution Architect Expert Azure Solutions Architect…
Added 49 mins ago
Automation Engineer (Top Secret Clearance Required)
Akima, LLC
North Charleston, SC
As Automation Engineer, you will provide senior-level technical leadership for the design, integration, sustainment, and optimization of networked systems supporting NIWC RDT&E mission…
Added 50 mins ago
Senior Software Engineer
Northrop Grumman
Newport News
The Senior Software Engineer leads the design, development, integration, and optimization of data-driven software capabilities supporting the modernization of the Global Command and Control…
Added 50 mins ago
Information Systems Engineer Manager 2
Northrop Grumman
Beale AFB
Northrop Grumman Aeronautics Systems has an opening for an Information Systems Engineer Manager 2 to join our team of qualified, diverse individuals within our Aircraft Solutions…
Added 52 mins ago
Senior Full Stack Engineer
Vizient
Irving
Apply indexing, query optimization, transaction management, and performance-tuning practices.
Added 57 mins ago
Sr. Software Engineer, Kernels/CUDA (C++)
SpaceXSI
Palo Alto, CA
Hands-on work with GPU kernel optimization (CUTLASS, custom kernels, Nsight profiling)
Added 58 mins ago
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Engineering Manager
GPAC
Carlinville, IL
- $100,000 to $135,000 USD / year
…CNC Manufacturing • CNC Programming • G-Code • Manufacturing Engineer • Process Engineering • Precision Machining • CNC Machining • Tooling Engineering • Cutting Tools • Tool Crib • Cycle…
Added 58 mins ago
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Engineering Manager
GPAC
Auburn, IL
- $100,000 to $135,000 USD / year
…CNC Manufacturing • CNC Programming • G-Code • Manufacturing Engineer • Process Engineering • Precision Machining • CNC Machining • Tooling Engineering • Cutting Tools • Tool Crib • Cycle…

SpaceXSI

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

Palo Alto, CA, United States

$220,000 - $357,000 USD

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Job details

Pay: $220,000 - $357,000 USD
Experience: 5+ years of experience with low-level system programming in C/C++
Posting language: English
Posted: Nov 5, 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:

$220,000 - $357,000 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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