Jobs in the United States

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Added 2 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 2 mins ago
UG
Senior Software Engineer
UnitedHealth Group
Eden Prairie, MN
- $91,700 to $163,700 USD / year
…outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers,…
Added 3 mins ago
Tech Consultant - Infrastructure Patch & Unix Engineer
NTT DATA Americas, Inc.
Jacksonville
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,…
Added 3 mins ago
Unix Engineer - Infrastructure Patch
NTT DATA Americas, Inc.
Jacksonville
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,…
Added 3 mins ago
Spring Migration Engineer
NTT DATA Americas, Inc.
Austin
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,…
Added 5 mins ago
TT
Frontend Engineer
True Talent Solutions Partners
New York, NY
- $185,000 to $300,000 USD / year
…You will own key frontend systems and turn real-time market data into intuitive tools for…
Added 5 mins ago
TT
Founding ML Research Engineer
True Talent Solutions Partners
San Francisco, CA
- $180,000 to $230,000 USD / year
- Develop evaluation tools, capture failure modes, and create data and fine-tuning loops that improve model quality.
Added 5 mins ago
Staff ML Engineer - Embodied AI Scaling Foundations
General Motors LLC
Remote, United States
As a Staff AI/ML Engineer in the Embodied AI Data Foundations organization, you will be an individual contributor developing data-centric AI solutions that directly improve autonomous…
Added 7 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 7 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 8 mins ago
AL
Senior Data Engineer
Absentia Labs
San Francisco, CA · Boston, MA · New York City, NY · Seattle, WA · San Jose, CA · Austin, TX
- $125,000 to $160,000 USD / year
As a Senior Data Engineer, you will own the design and evolution of Absentia Labs’ biomedical data platform. You will operate with a high degree of autonomy, making long-horizon…
Added 9 mins ago
Sr. Software Engineer, Linux Kernel
SpaceXSI
Seattle, WA
Added 12 mins ago
CB
Senior Data Engineer
Commercial Bank of California
United States
- $135,000 to $170,000 USD / year
The Senior Data Engineer is responsible for designing, building, and operating scalable, secure data platforms that power enterprise analytics, reporting, and advanced data use cases,…
Added 15 mins ago
F
Staff Security Engineer
fal
San Francisco, CA
- $180,000 to $250,000 USD / year
- Protect model weights, customer data, and inference endpoints with strong identity, encryption, and access controls
Added 16 mins ago
A
Strategic Business Development Lead, Private Equity
Aleph
Remote, United States
- $159,800 to $225,000 USD / year
…solve a problem many finance teams are super familiar with: data scattered across a million systems, endless spreadsheets and way too much time spent getting numbers to line up instead of…
Added 17 mins ago
Applications Development Sr Programmer Analyst
Citibank, N.A.
United States
We are seeking a highly motivated and experienced Senior Engineer to join our Retail and Wealth Risk Engineering team under the Enterprise Risk Technology platform. This is an…
Added 17 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 20 mins ago
AI Engineer
NCR VOYIX
ATLANTA, GA
NCR VOYIX Corporation is seeking a skilled Data Scientist (II) to join our innovative team. This role involves applying advanced analytical techniques, machine learning, and statistical…
Added 21 mins ago
Industry Solutions Engineer, Splunk - Energy and Utilities
Cisco
Chicago, IL
Scale & Standardize GTM Assets: Build and maintain a Standard Outcome based blueprint to develop a Solutions Engineer Kit containing (discovery guide, Energy and Utility use cases, demo…
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…
Added 22 mins ago
Jr./Mid-Level Software Engineer
Koniag Government Services
Annapolis, MD
Koniag IT Systems, LLC, a Koniag Government Services company, is seeking a Jr./Mid-Level Software Engineer to support KITS and our government customer. The position is hybrid, with partial…
Added 22 mins ago
Software Developer
Koniag Government Services
Huntsville, AL
KGS is currently seeking an accomplished Senior Full Stack Software Engineer/Developer to spearhead the engineering, enhancement, and architectural modernization of core Line of Business…
Added 22 mins ago
Junior Software Engineer
Koniag Government Services
Washington, DC
Koniag IT Solutions, a Koniag Government Services company, is seeking a Junior Software Engineer with a TS/SSBI SCI eligibility a to support KITS and our government customer in Washington,…
Added 22 mins ago
AI Security Engineer - Mid
Koniag Government Services
Washington, DC
Koniag Operations Services, LLC (KOS), a Koniag Government Services company, is seeking an experienced AI Security Engineer (Mid) to support a comprehensive enterprise cybersecurity…
Added 22 mins ago
Harness/Traceable Integration Engineer (Senior)
Koniag Government Services
Washington, DC
…company, is seeking an experienced Harness/Traceable Integration Engineer (Senior) to support enterprise DevSecOps operations, API security, and IT administrative and operational support…

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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