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Co-Packaged Optics Packaging Process Development Engineer
MSI - (Marvell Semiconductor Inc.) US
Santa Clara, CA
Added 8 mins ago
Senior Full Stack Engineer
Vizient
Irving
Added 8 mins ago
AT
Network Infrastructure Engineer II
Akamai Technologies, Inc.
Des Moines, IA
- $83,200 to $149,800 USD / year
As a Network Infrastructure Engineer II, you will oversee operations in our global data centers. You will monitor and maintain our data centers, networks, and servers worldwide. You will…
Added 8 mins ago
AI Automation Architect - Manufacturing and MES processes- Remote
Cognizant
Des Moines, IA
…fundamentally connect people with processes. Within Cognizant IOT, we engineer industry-aligned, IoT-enabled products that merge industry needs with human drivers. Our intelligent products…
Added 8 mins ago
Software Engineer
Teradata
Des Moines, IA
This position is for a Software Engineer in the POD Services team within the TD Factory team. The position involves development, integration, functional and performance testing, and fault…
Added 8 mins ago
EG
Quality Assurance Engineer - PHP
Eliassen Group
Des Moines, IA
- $40 to $50 USD / hour
Our client seeks a results-driven Senior Quality Assurance Engineer to support Policyholder Portal applications. The role requires manual, automation, mobile, API, and database testing…
Added 8 mins ago
EG
Workday Adaptive Planning Engineer
Eliassen Group
Des Moines, IA
- $65 to $75 USD / hour
Our client is seeking a Workday Adaptive Planning Engineer to design, build, and maintain financial planning and forecasting solutions. The role partners with FP&A, Accounting, and Finance…
Added 10 mins ago
IT Network Engineer Sr.
Ann & Robert H. Lurie Children's Hospital of Chicago
Streeterville, IL
The IT Network Engineer, Senior is primarily responsible for the design, implementation and support of enterprise network infrastructure utilized by Lurie Children’s Hospital. This includes…
Added 12 mins ago
TT
Senior Forward Deployed Engineer
True Talent Solutions Partners
Redwood City, CA
- $215,000 to $290,000 USD / year
- Experience as a forward deployed or solutions engineer, technical product manager, founder, or in a comparable role.
Added 12 mins ago
TT
Research Engineer, Evals
True Talent Solutions Partners
San Francisco, CA
- $250,000 to $290,000 USD / year
Added 12 mins ago
TT
Software Engineer, C++ Systems
True Talent Solutions Partners
San Francisco, CA
- $250,000 to $325,000 USD / year
Added 13 mins ago
Sr. Software Engineer, Kernels/CUDA (C++)
SpaceXSI
Palo Alto, CA
Added 14 mins ago
M
Robotics Software Engineer, Teleoperation
Mecka
New York, NY
- $200,000 to $240,000 USD / year
- Work with a Teleop Platform Engineer on the end-to-end latency budget and on what we record, at what rate, in what format.
Added 14 mins ago
M
Teleop Platform Engineer, Real-Time Systems & UI
Mecka
New York, NY
- $200,000 to $240,000 USD / year
Added 15 mins ago
IT Manufacturing Data Solutions Engineer
Corning Incorporated
Newton, NC
The Manufacturing Data Solutions Engineer is responsible for transforming manufacturing and operational data into actionable business intelligence, analytics, and AI-enabled solutions. This…
Added 15 mins ago
IT Controls Engineer
Corning Incorporated
Newton, NC
The IT Controls Engineer supports the design, implementation, and continuous improvement of manufacturing control systems and operational technology across both Trivium manufacturing…
Added 15 mins ago
Principal Engineer, Automation Engineering -Aseptic Filling SME
J&J Family of Companies
Wilson, NC
The Automation Engineer will serve as the subject matter expert (SME) for the integrated aseptic vial and syringe filling lines for Project Eagle in Wilson, North Carolina. This role…
Added 15 mins ago
Technical Support Engineer - Second Shift
NetApp
Morrisville, NC
…support of that mission, we are seeking a Technical Support Engineer with Cloud Hyperscaler experience. We are looking for eager individuals who love debugging and solving technical…
Added 16 mins ago
Sr AI Information Security Engineer (REMOTE)
Insight Global
Cary, NC
A large software and gaming company is seeking a Senior Information Security Engineer with hands-on experience in both Security Engineering and AI technologies. This individual will help…
Added 16 mins ago
A
CERTFICATION ENGINEER- HYBRID
Actalent
Winston Salem, NC
- $85,000 to $100,000 USD / year
Added 16 mins ago
A
QUALITY ENGINEER LEAD
Actalent
Greensboro, NC
- $75,000 to $95,000 USD / year
Quality Engineer role focuses on implementing and maintaining robust quality systems and controls within a high-volume manufacturing environment. You will combine technical expertise in…
Added 16 mins ago
Field Applications Engineer
Broadcom
Raleigh, NC
Core Switching Group (CSG) Software Field Applications Engineer (FAE) will be supporting industry leading XGS-Tomahawk series of products in AI clusters for scale up, scale out, scale…
Added 16 mins ago
New College Grad - Process Engineer - Doctorate (Winter 2026)
Applied Materials
Santa Clara, CA · Santa Clara
As a Process Engineer, you'll play a crucial role in designing and optimizing manufacturing processes for display and semiconductor manufacturing technologies. You will collect and analyze…
Added 16 mins ago
New College Grad - Process Engineer - Doctorate (Winter 2026)
Applied Materials
Santa Clara, CA · Santa Clara
As a Process Engineer, you'll play a crucial role in designing and optimizing manufacturing processes for display and semiconductor manufacturing technologies. You will collect and analyze…
Added 16 mins ago
T
Arista Engineer
TEKsystems
Charlotte, NC
- $49.85 to $55 USD / hour

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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