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Added 2 mins ago
Network Engineer
Project Renewal
New York, NY
The Network Engineer will play a critical role in maintaining and advancing Project Renewal’s network infrastructure, spanning cloud services, servers, workstations, VoIP systems, Internet…
Added 4 mins ago
Information Systems Unix Engineering Unix System Engineer 3
B&H Photo
New York, NY
Proficient with complete integration of server systems within an enterprise network
Added 15 mins ago
RU
Field Engineer
Randstad USA
Mendota, IL
- $60,000 to $75,000 USD / year
Responsible for maintaining and troubleshooting both network and voice communication systems. This hybrid role combines the duties of managing network infrastructure with the installation,…
Added 19 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 19 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 19 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 19 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 19 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 19 mins ago
Telecommunications Specialist 2 (Technical Specialist 2) - Tysons, VA
M.C. Dean, Inc
Tysons, VA
…connector types, system topology, and device locations, with network engineering, mechanical, electrical, cybersecurity, and other…
Added 19 mins ago
Telecommunications Specialist 4 (Technical Specialist 4) - Tysons, VA
M.C. Dean, Inc
Tysons, VA
…engineering deliverables before they go to the project's lead engineer for Government submittal. The specialist is a primary technical interface to the Government program office, base…
Added 19 mins ago
Telecommunications Specialist 2 (Technical Specialist 2) - San Antonio, TX
M.C. Dean, Inc
San Antonio, TX
…connector types, system topology, and device locations, with network engineering, mechanical, electrical, cybersecurity, and other…
Added 19 mins ago
Sr. Engineer, Network Engineering(R-140263)
Mastercard Incorporated
O'Fallon, MO
Added 20 mins ago
Sr. Software Engineer, Linux Kernel
SpaceXSI
Seattle, WA
…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…
Added 29 mins ago
2027 Summer Intern: Wireless Engineer I
Spectrum
Greenwood Village, CO
This experience is designed to help you explore your interests, expand your network and leave with a deeper understanding of both your field and the impact of our business.
Added 29 mins ago
2027 Summer Intern: Software Engineer - P&T
Spectrum
Maryland Heights, MO
This experience is designed to help you explore your interests, expand your network and leave with a deeper understanding of both your field and the impact of our business.
Added 33 mins ago
Industry Solutions Engineer, Splunk - Energy and Utilities
Cisco
Chicago, IL
Join a team of Splunk Solutions Engineers! The Energy and Utilities Industry Solutions Engineer leads targeted, business-outcomes. Accelerates GTM by developing repeatable use cases and the…
Added 34 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 34 mins ago
Senior Systems Administrator
Koniag Government Services
Fort Belvoir, VA
…problems while guiding administrators and coordinating with network and cybersecurity…
Added 34 mins ago
Cloud Engineer Architect
Koniag Government Services
Washington, DC
Koniag Technology Solutions, Inc a Koniag Government Services company, is seeking a Cloud Engineer Architect with a Secret security clearance to support KTS and our government customer in…
Added 34 mins ago
L2 Enterprise Operations Engineer
Koniag Government Services
Washington, DC
Koniag Technology Solutions, Inc a Koniag Government Services company, is seeking a L2 Enterprise Operations Engineer with a Secret security clearance to support KTS and our government…
Added 34 mins ago
Tier 1 Help Desk Engineer
Koniag Government Services
Washington, DC
Koniag IT Systems LLC, a Koniag Government Services company, is seeking a self-motivated Tier 1 Help Desk Engineer to support KITS and our government customer in downtown Washington, DC.…
Added 34 mins ago
L1 Enterprise Operations Engineer
Koniag Government Services
Beltsville, MD
Koniag Technology Solutions, Inc a Koniag Government Services company, is seeking a L1 Enterprise Operations Engineer with a Secret security clearance to support KTS and our government…
Added 34 mins ago
L1 Enterprise Operations Engineer
Koniag Government Services
Denver, CO
Koniag Technology Solutions, Inc a Koniag Government Services company, is seeking a L1 Enterprise Operations Engineer with a Secret security clearance to support KTS and our government…
Added 34 mins ago
Unified Communications Engineer
Koniag Government Services
Huntsville, AL
The Unified Communications Engineer I will be responsible for supporting the global UC/VTC network that provides Telepresence, videoconferencing, and teleconference services to Army…
Added 34 mins ago
VTC Engineer & Support Services
Koniag Government Services
Washington, DC
Koniag Data Solutions, LLC a Koniag Government Services company, is seeking a VTC Engineer & Support Services to support KDS and our government customer in Washington, DC.

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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Skills

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

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