Jobs in the United States

25+ jobs

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Added 4 mins ago
Principal ASIC Engineer
Echodyne Corp
Kirkland, WA
…designed for autonomous vehicles, uncrewed aircraft & drones, and security of borders, critical infrastructure, and smart cities. The company combines the patented technology of…
Added 6 mins ago
UG
Principal Data Engineering - Remote
UnitedHealth Group
Minnetonka, MN
- $112,700 to $193,200 USD / year
The Principal Data Engineer is a senior individual contributor responsible for designing, building, and scaling enterprise data platforms and data pipelines. This role combines cloud-based…
Added 6 mins ago
UG
Senior Software Engineer
UnitedHealth Group
Eden Prairie, MN
- $91,700 to $163,700 USD / year
As a Senior Software Engineer on the OCPN Cloud Platform Team, you will drive the architecture, technical design, development, delivery, and operationalization of cloud-native, resilient,…
Added 7 mins ago
Tech Consultant - Infrastructure Patch & Unix Engineer
NTT DATA Americas, Inc.
Jacksonville
We are seeking a skilled Unix Engineer with experience supporting enterprise-scale Unix/Linux environments. This role will be responsible for designing, testing, validating, and deploying…
Added 7 mins ago
Unix Engineer - Infrastructure Patch
NTT DATA Americas, Inc.
Jacksonville
We are seeking a skilled Unix Engineer with experience supporting enterprise-scale Unix/Linux environments. This role will be responsible for designing, testing, validating, and deploying…
Added 7 mins ago
RU
Field Engineer
Randstad USA
Mendota, IL
- $60,000 to $75,000 USD / year
…configuration, and maintenance of voice communication systems. The Field Engineer will utilize company toolsets and diagnostic techniques to ensure optimal performance of both network and…
Added 8 mins ago
CB
Security Engineer II
Coinstar Brand
Remote, United States
- $117,308 to $146,635 USD / year
Coinstar’s Security Engineer II is responsible for the design, implementation and maintenance of security solutions to include email security, network security including firewall…
Added 8 mins ago
SO
IT System Administration - Senior/Specialist
State of Washington
Olympia, WA
- $8,522 to $11,460 USD / month
As a DevOps Engineer, you will help DCYF modernize and improve how technology is delivered by creating automation that makes systems more reliable, secure, and efficient. You will support…
Added 10 mins ago
Financial Manager - SES - Tysons, VA
M.C. Dean, Inc
Tysons, VA
…enterprises. The company’s capabilities include electrical, electronic security, telecommunications, life safety, automation and controls, audio visual, and IT systems. M.C. Dean is…
Added 11 mins ago
Telecommunications Engineer 4 - Tysons, VA
M.C. Dean, Inc
Tysons, VA
We are seeking a Telecommunications Engineer 4 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that…
Added 11 mins ago
Telecommunications Engineer 2 - San Antonio, TX
M.C. Dean, Inc
San Antonio, TX
We are seeking a Telecommunications Engineer 2 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that…
Added 11 mins ago
Telecommunications Engineer 3 - Tysons, VA
M.C. Dean, Inc
Tysons, VA
We are seeking a Telecommunications Engineer 3 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that…
Added 11 mins ago
Telecommunications Engineer 2 - Tysons, VA
M.C. Dean, Inc
Tysons, VA
We are seeking a Telecommunications Engineer 2 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that…
Added 11 mins ago
Deployment Network Engineer 4
M.C. Dean, Inc
Springfield, VA
We are seeking a Deployment Network Engineer 4 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that…
Added 11 mins ago
MD
Project Administrator, Staff
M.C. Dean, Inc
Frederick, MD
- $26.77 to $30.11 USD / hour
…company’s capabilities include electrical power systems, electronic security, telecommunications, life safety, automation and controls, audio visual, and IT systems. M.C. Dean is…
Added 11 mins ago
Senior Design Engineer (Engineer 5)
M.C. Dean, Inc
Tysons, VA
We are seeking a Senior Design Engineer to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that designs,…
Added 11 mins ago
Design Engineer Staff
M.C. Dean, Inc
Caroline County, VA
…7,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons,…
Added 11 mins ago
Telecommunications Specialist 2 (Technical Specialist 2) - Tysons, VA
M.C. Dean, Inc
Tysons, VA
…9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons,…
Added 11 mins ago
Telecommunications Specialist 4 (Technical Specialist 4) - Tysons, VA
M.C. Dean, Inc
Tysons, VA
…9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons,…
Added 11 mins ago
Telecommunications Specialist 2 (Technical Specialist 2) - San Antonio, TX
M.C. Dean, Inc
San Antonio, TX
…9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons,…
Added 12 mins ago
Sr. Software Engineer, Linux Kernel
SpaceXSI
Seattle, WA
Experience with product security, OS/system hardening, and secure boot schemes
Added 20 mins ago
DO
Senior Systems Administrator - Hybrid Telework
Department of State Hospitals
CA
- $8,625 to $11,557 USD / month
…Engineering and Cloud domains. Elements include architecture, security, design, development, testing, operation, configuration, and maintenance of systems. System elements include Server,…
Added 23 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 25 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 25 mins ago
Recruiting Coordinator
Fortastra Corporation
Torrance, CA
…demanding mission requirements. Our work directly supports the security and resilience of the United States and its allies, and we approach that mission with urgency, innovation, and a deep…

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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