Jobs in the United States

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Added 2 mins ago
M
Software Engineer
Mecka
New York, NY · San Francisco, CA
- $165,000 to $200,000 CAD / year
We're hiring Software Engineers who own problems end to end - not a
Added 2 mins ago
Senior Staff Software Engineer, Site Reliability Engineering
Google
Mountain View, CA
8 years of experience with software development in one or more programming languages.
Added 2 mins ago
Senior Software Architect - Platform
Fiserv Solutions LLC
Alpharetta, GA · Berkeley Heights, NJ
Added 3 mins ago
Senior Software Engineer, Services - VALORANT, Player Dynamics
Riot Games
Los Angeles, CA
…opportunity to work in a variety of broader domains. As a Senior Software Engineer, you’ll also dive into projects that focus on team cohesiveness and cross-team objectives. You’ll lead…
Added 4 mins ago
Software Development Engineer II, Customer Terminal Aviation Quality
Amazon Kuiper Manufacturing Enterprises LLC
Redmond, WA
Added 5 mins ago
ME
Software Architect
Mitsubishi Electric US, Inc.
Suwanee, GA
- $111,200 to $152,900 USD / year
This position will architect, design, develop, debug, test and maintain software programs for a variety of environments, with a focus on AWS cloud, firmware and mobile applications.
Added 10 mins ago
Software Engineer 3/Sr/Principal
BHE
Des Moines, IA · Reno, NV · Las Vegas, NV
The software engineer provides advanced technical expertise and guidance in the architecture, design, programming, testing, documentation and implementation of complex computer applications…
Added 11 mins ago
AD
Software Engineer II (Hybrid - 2x/week)
Avery Dennison
Little Rock, AR
- $75,000 to $111,000 USD / year
Added 12 mins ago
Infrastructure Software Engineer II (Remote - US)
BNSF Railway
United States
Added 15 mins ago
Software Engineer III
Yum!
Irvine, CA
Added 17 mins ago
Software Engineer Internship - Winter 2027
DataVisor
Mountain View, CA
…them from the ever-increasing risk of fraud. Our award-winning software is powered by a…
Added 18 mins ago
Integrated Control Systems Engineer (Software)
Rolls-Royce
United States
"Launch" into Integrated Control Systems Engineer (Software)
Added 18 mins ago
Staff Software Engineer, Cortex AI Functions
Snowflake
Bellevue, WA
Added 19 mins ago
Principal Software Engineer
Partners Capital
Boston, MA
Added 21 mins ago
Lead Software Engineer-Marketing Technology
AAPC
Remote, United States
AAPC seeks a hands-on lead software engineer to help build and evolve the customer-facing digital products, e-commerce experiences, and marketing technology that take people from discovery…
Added 22 mins ago
IG
Mainframe Software Engineer
Insight Global
Plano, TX
- $75,000 to $110,000 USD / year
Added 21 mins ago
Software Architect
Thales Group
austin
Added 23 mins ago
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Senior Software Engineer
LanceDB
San Francisco, CA
- $180,000 to $250,000 USD / year
Added 23 mins ago
Compute Systems Architect - Expeditionary AI/HPC Data Centers
Anduril Industries
Mountain View, CA · Costa Mesa, CA
Added 23 mins ago
UG
Software Engineer (Full Stack Developer) - Remote
UnitedHealth Group
Austin, TX
- $72,800 to $130,000 USD / year
Added 23 mins ago
Senior Software Engineer - Golang
Credit Acceptance Corporation
WA
Added 25 mins ago
Senior Software Engineer
FanDuel
Jersey City, NJ
As a Senior Software Engineer within FanDuel’s Risk and Trading Technology team, you will be an essential part of a cross functional agile team that directly impacts our business. You will…
Added 25 mins ago
Quantitative Software Engineer
FanDuel
Jersey City, NJ
As a Software Engineer within FanDuel’s Trading Solutions team, you will be an essential part of a cross functional agile team that directly impacts our business. You will work…
Added 25 mins ago
Software Development Engineer Intern
Boston Scientific
Waltham, MA
Added 26 mins ago
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Flight Software Engineer
Long Wall
Long Beach, CA
- $115,000 to $250,000 USD / year

SpaceXSI

Sr. Software Engineer, Linux Kernel

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 hands-on systems programming experience in C or 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, LINUX KERNEL

At SpaceXSI, we design, build, and operate the largest AI supercomputers in the world, from the ground up. As a member of the Platform Core team, you will be responsible for the lowest layers of the software stack on the devices setting the pace for how fast we can push the frontier of AI. Our team’s software interfaces directly with the core hardware of the supercomputer and its network fabric. Our mission is to expose the full capability of that hardware - limited only by physics - to the rest of the stack, all while retaining the smallest, most robust footprint possible.

RESPONSIBILITIES:

Build and maintain the lean, high-reliability Linux-based operating system that underpins our supercomputer network fabric
Write (or rewrite) high-performance device drivers to extract the maximum physical capability from our network and compute hardware
Manage deployment, operation, and debugging of our platform in production, including: rigorous resolution and root-causing of anomalies to ensure the system is constantly improving in reliability and developing and constantly improving our tools for observability and configuration management
Collaborate with our hardware teams and external partners to design the next generation of supercomputer hardware – and then bring up our OS and software stack on it

BASIC QUALIFICATIONS:

5+ years of hands-on systems programming experience in C or C++

PREFERRED SKILLS AND EXPERIENCE:

Strong operating systems fundamentals (scheduling, memory management, I/O) - you must be able to articulate in extreme detail how a computer works, from the hardware all the way up to high-level applications
Understanding of computer networking, both in the host (OS stack) as well as common network devices like switches and routers
Excellent written and verbal communication skills
Deep knowledge of the Linux kernel and its networking stack - transferable experience with another production-grade kernel is okay, too!
Proficiency with debugging tools spanning kernel, network, and userspace (e.g., ftrace, perf, Wireshark/tcpdump, eBPF, gdb, and more)
Experience bringing up new hardware from scratch - you have flashed bare-metal software on a microcontroller with JTAG, or bootstrapped a Linux kernel and rootfs on new hardware
Demonstrated track record of developing and optimizing device/peripheral drivers - ideally for high-speed interfaces, or with advanced considerations like DMA and cache coherency
Understanding of major peripheral hardware interface standards (Ethernet, PCIe, I2C, SPI, etc.) - you can critically review a schematic, and debug these interfaces if needed
Experience with product security, OS/system hardening, and secure boot schemes

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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