Jobs in the United States

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Added 2 mins ago
Mechanical Engineer - PM
Old Dominion University
Norfolk, VA
Master’s degree in mechanical engineering, construction management or a related discipline. Professional Engineer registration and/or Project Management Professional (PMP). Some experience…
Added 2 mins ago
CAPITAL PROJECT MANAGER
Old Dominion University
Norfolk, VA
- Professional Engineer or Registered Architect credentials.
Added 3 mins ago
Spring Migration Engineer
NTT DATA Americas, Inc.
Austin
We are currently seeking a Spring Migration Engineer to join our team in Austin, Texas (US-TX), United States (US).
Added 4 mins ago
SO
IT System Administration - Senior/Specialist
State of Washington
Olympia, WA
- $8,522 to $11,460 USD / month
This DevOps Engineer reports to the DevOps Architect and provides technical guidance to other DevOps engineers, with a focus on Linux systems and automation. The position works closely with…
Added 6 mins ago
Software Engineer II - Argo Applications
Frost Bank
San Antonio, TX
…autonomy to build new solutions from the ground up? If so, being a Software Engineer II at Frost could be the job for…
Added 6 mins ago
Product Support Engineer
Samsung Electronics America, Inc.
Plano, TX
Position Objective: The DA Product Support Engineer is responsible for managing New Product Introduction (NPI) product quality evaluations, post-launch field quality support, and service…
Added 6 mins ago
Product Support Senior Engineer
Samsung Electronics America, Inc.
Plano, TX
The DA Product Support Senior Engineer is responsible for leading all DA Product engineers and controls each product engineers’ tasks. This senior role ensures New Product Introduction…
Added 7 mins ago
MD
Project Administrator, Staff
M.C. Dean, Inc
Frederick, MD
- $26.77 to $30.11 USD / hour
…Tysons, Virginia and employs more than 9,000 professionals who engineer and deploy automated, secure, and resilient power and technology systems; and deliver the management platforms…
Added 7 mins ago
Senior Software Engineer, Ads Measurement
Roblox
San Mateo, CA
As a Senior Software Engineer on our Ads Measurement team, you will architect and build foundational ads systems that are capable of reliably serving Roblox’s massive scale. You will drive…
Added 8 mins ago
Sr. Software Engineer, Linux Kernel
SpaceXSI
Seattle, WA
…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…
Added 8 mins ago
RTL Engineer – Physical AI Solutions
Altera
San Jose, CA
As an RTL Engineer, you will be responsible for designing, implementing, and verifying high-performance digital logic that powers AI and accelerated computing solutions. You will…
Added 10 mins ago
Senior Civil Engineer
Arcadis
Highlands Ranch · Phoenix · Salt Lake City
Arcadis is seeking a Senior Civil Engineer to join our team in one of the following areas: Denver, Colorado; Phoenix, Arizona; or Salt Lake City, Utah. This position will provide senior…
Added 15 mins ago
F
Staff Security Engineer
fal
San Francisco, CA
- $180,000 to $250,000 USD / year
- Harden cloud, Kubernetes, CI/CD, and the software supply chain
Added 16 mins ago
Applications Support Sr Analyst
Citibank, N.A.
United States
The Observability Engineer will support the organization's observability transformation initiatives by helping onboard applications to modern observability platforms and OpenTelemetry…
Added 19 mins ago
Platform Engineer (TS/SCI CI Poly)
Seamless Migration
Reston · Alexandria · Washington · Colorado Springs
Seamless Migration is seeking a career and customer-oriented Platform Engineer to join our team.
Added 21 mins ago
G
Mechanical / Plumbing Design Engineer
GPAC
Saint Louis, MO
- $75,000 to $150,000 USD / year
…engineering firm seeking an experienced Mechanical / Plumbing Design Engineer to join its growing team. This is an excellent opportunity for a motivated professional who enjoys designing…
Added 21 mins ago
Recruiting Coordinator
Fortastra Corporation
Torrance, CA
A high-performing startup is built on dense talent, not organizational bloat. A single exceptional engineer designs, tests, and delivers faster than a bloated committee. We intentionally…
Added 22 mins ago
Systems Engineer
Koniag Government Services
Fort Lee, VA
Koniag Management Services, a Koniag Government Services company, is seeking a Systems Engineer to support KMS and our government customer at Fort Lee, VA. This position requires the…
Added 22 mins ago
Test Engineer
Koniag Government Services
Vienna, VA
Kadiak, LLC, a Koniag Government Services company, is seeking a Test Engineer with a TS security clearance to support Kadiak and our government customer in Vienna, VA.
Added 22 mins ago
Network Engineer
Koniag Government Services
Washington, DC · Arlington, VA
Koniag IT Systems LLC, a Koniag Government Services company, is seeking a Network Engineer to support KITS and our government customer in Washington, DC. This position requires daily…
Added 22 mins ago
AWS Engineer
Koniag Government Services
Vienna, VA
Kadiak, LLC, a Koniag Government Services company, is seeking an AWS Engineer with a TS/SCI security clearance to support Kadiak and our government customer in Vienna, VA. This position…
Added 22 mins ago
VTC Engineer
Koniag Government Services
Huntsville, AL
Koniag Information Technology Systems (KITS), a Koniag Government Services company, is seeking a VTC Engineer with a secret clearance to support our Army customer in Alabama. This position…
Added 22 mins ago
Java/.net Modernization Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC, a Koniag Government Services company, is seeking a Java/.net Modernization Engineer with a Secret security clearance to support TGS in supporting our…
Added 22 mins ago
QA Test Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC, a Koniag Government Services company, is seeking a QA Test Engineer with a Secret security clearance to support TGS in supporting our government customer in…
Added 22 mins ago
Generative AI Software Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC a Koniag Government Services company, is seeking a Generative AI Software Engineer with a Secret security clearance to support TGS in supporting our…

SpaceXSI

Sr. Software Engineer, Linux Kernel

Seattle, WA, United States

$180,000 - $330,000 USD

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Job details

Pay: $180,000 - $330,000 USD
Experience: 5+ years of hands-on systems programming experience in C or 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, 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:

$180,000 - $330,000 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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More about this job

Skills

Linux
Debugging
BASIC
C
C++
Scheduling
Communication skills
Wireshark
Tcpdump

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