Jobs in the United States

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Added 18 mins ago
ASIC Design Verification Engineer, Google TPU
Google
Sunnyvale, CA
As an ASIC Design Verification Engineer, you will use design and verification expertise to perform direct verification in active projects using problem-solving skills.
Added 18 mins ago
Staff Software Engineer, Cloud ML Compute Services
Google
Kirkland, WA
5 years of experience building and developing large-scale infrastructure, distributed systems or networks, or experience with compute technologies, storage, or hardware architecture.
Added 19 mins ago
Senior Design Manager (Data Center)
Jacobs
Chandler, AZ
At Jacobs, we are helping clients deliver the next generation of AI, cloud, hyperscale, and high-performance computing infrastructure. We are seeking a Senior Design Manager - AI Data…
Added 19 mins ago
J
Lead Site Reliability Engineer
Jobgether
Remote, United States
- $150,000 to $175,000 USD / year
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Site Reliability Engineer based in the United States.
Added 19 mins ago
IG
Automation Engineer (Terraform)
Insight Global
Tucson, AZ
- $65 to $75 USD / hour
…high‑visibility initiative.We are seeking a hands‑on Cloud Automation & Infrastructure Engineer to join a small, highly technical platform team supporting enterprise‑scale infrastructure…
Added 20 mins ago
Watersheds & Stormwater Subdiscipline Leader Job Details | Black & Veatch Family of Companies
Black & Veatch
Phoenix, AZ
…ever-evolving world. With over 100 years of innovation in sustainable infrastructure and our expertise in engineering, procurement, consulting and construction, together we are building a…
Added 20 mins ago
Senior Test Engineer
Kelly Services
Phoenix, AZ
A growing communications technology organization is seeking a Senior Test Engineer to join its team in the Phoenix-area on a full-time basis. This onsite role focuses on testing and…
Added 20 mins ago
Consultant, Black & Veatch Corporation, Phoenix, AZ Job Details | Black & Veatch Family of Companies
Black & Veatch
Phoenix, AZ
…ever-evolving world. With over 100 years of innovation in sustainable infrastructure and our expertise in engineering, procurement, consulting and construction, together we are building a…
Added 24 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 24 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 24 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 24 mins ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 25 mins ago
Applications Engineer
Continuum Resource Network
Foster City, CA
We are helping an on-demand, autonomous ride-hailing company find an Applications Engineer to support the configuration, maintenance, and ongoing improvement of Application Lifecycle…
Added 25 mins ago
Applications Engineer
Continuum Resource Network
Foster City, CA
We are helping an on-demand, autonomous ride-hailing company find an Applications Engineer to support the configuration, maintenance, and ongoing improvement of Application Lifecycle…
Added 25 mins ago
Application Administrator - Engineering Applications
Continuum Resource Network
Foster City, CA
We are helping an on-demand, autonomous ride-hailing company find an Applications Engineer to support the configuration, maintenance, and ongoing improvement of Application Lifecycle…
Added 31 mins ago
SS
Windows Systems Engineer
Samsung SDS America
Plano, TX
- $135,000 to $147,000 USD / year
We are seeking a Senior Microsoft Exchange and Active Directory Engineer to design, implement, maintain, and optimize enterprise messaging and directory services to ensure secure, highly…
Added 31 mins ago
SS
VMWare Engineer
Samsung SDS America
Plano, TX
- $156,000 to $166,000 USD / year
We are seeking a VMware Engineer to manage, maintain, and optimize enterprise virtualized environments, including VMware ESXi, vCenter, Horizon View, and end-user virtual desktop…
Added 31 mins ago
SS
Linux Engineer
Samsung SDS America
Plano, TX
- $156,000 to $166,000 USD / year
We are seeking a Linux Infrastructure Engineer to manage, optimize, and secure enterprise Linux environments across on-premises data centers and public cloud platforms. This role focuses on…
Added 34 mins ago
ER
Systems Architect - Manning - Information Systems Systems
El Rio Community Health Center
Tucson, AZ
- $47.06 to $77.6 USD / hour
The Systems Architect will work across all technical specialties including, but not limited to, applications, servers, storage, network, security, or other infrastructure.
Added 44 mins ago
AW
IT Infrastructure Engineer II
ANDREW WOMMACK MINISTRIES INC
Woodland Park, CO
- $6,500 to $7,501 USD / month
The IT Operations Engineer II supports the planning, engineering, deployment, and maintenance of secure, scalable, and reliable technology solutions across multiple departments and…
Added 48 mins ago
Senior software engineer
Adept Scientific Inc.
Boston, MA
Our platform is built and in the hands of early customers. We need a senior engineer to take ownership of it and carry it through its next stage: hardening what exists, scaling to more…
Added 48 mins ago
Senior / Staff Software Engineer
Axella
Boston, MA
We’re hiring a foundational technical leader to own engineering execution end-to-end - architecture, AI systems design, infrastructure, and the engineering standards and culture we build…
Added 49 mins ago
Senior Infrastructure Engineer, Devops
caldera
Remote, United States
As a Senior Infrastructure Engineer at Caldera, you will:
Added 50 mins ago
O
Founding Full-Stack Software Engineer Who Has Applied for US Green Card / Visa
OpenGreenCard
San Francisco, CA
- $80,000 to $140,000 USD / year
Our founders are twin brothers. Peter worked as an engineer at Stripe and a consultant at McKinsey, and Harry as a product manager at Google. We’re an engineering and product-driven team:…
Added 50 mins ago
Full-Stack Mobile Software Engineer
Spirit AI
Alexandria, VA · Arlington, VA · Fairfax, VA · Tysons, VA · Washington, DC
We’re a lean, hands-on team where every engineer owns major pieces of the experience. You’ll work directly with founders and AI engineers to define how people emotionally connect with…

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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