Jobs in the United States

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RH
Automation Developer
Robert Half
Remote, United States
- $90,000 to $110,000 USD / year
We are looking for an Automation Engineer to help advance workflow efficiency and the design and deployment of applications for a healthcare organization. This role partners with…
Added 1 min ago
RH
Sr. Data Engineer
Robert Half
Minneapolis, MN
- $115,000 to $144,000 USD / year
We are looking for a Senior Data Engineer to strengthen our data foundation and help deliver reliable, scalable information solutions across Minneapolis, Minnesota. In this role, you will…
Added 3 mins ago
V
Sr Software Engineer
Vontier
Virtual
- $112,300 to $140,000 USD / year
Provide support to and partner with Front-End software engineer(s) on solutions, problem-solving, and setting processes and standards.
Added 3 mins ago
PCBA Manufacturing Engineer
Rocket EMS
San Jose, CA
The Manufacturing Engineer is responsible for supporting and improving printed circuit board assembly manufacturing processes in a high-mix, fast-paced electronics manufacturing…
Added 4 mins ago
Staff Process Development Engineer
Dexcom
San Diego, CA · San Diego
…broadening our vision beyond diabetes to empower people to take control of health. That means personalized, actionable insights aimed at solving important health challenges. To continue…
Added 4 mins ago
Systems Engineer
PPT Solutions, LLC
Huntsville, AL
…Operational Views, System/Service Views, Standard Views and Data and Information Views. Candidate will work across multiple organizations to identify and define future capability and…
Added 5 mins ago
Process Engineer
Olin Corporation
US-MO-Independence
Focus: We are seeking a skilled Process Engineer to join our dynamic team. The successful candidate will be responsible for developing and optimizing manufacturing processes to improve…
Added 5 mins ago
Engineer - Vehicle Flight Control & Inertial Navigation Systems
The Pennsylvania State University
United States
We are searching for a Dynamics and Controls Engineer to join our Vehicle Control and Dynamics Department within the Undersea Systems Office (USO) at the Applied Research Laboratory (ARL)…
Added 5 mins ago
Electrical Integration and Test Engineer II
Voyager Technologies, Inc.
Pittsburgh, PA
The Electrical Integration & Test Engineer for Voyager Lunar Systems is responsible for test operations, ownership of test electrical systems, and development of integration and test…
Added 6 mins ago
Acquisition Decision Support and Data Analytics Specialist
KBR Wyle Services, LLC
Tampa, FL
KBR is seeking a Senior Modeling & Simulation Engineer to join a dynamic, high-performing, multi-disciplinary team consisting of operational military and intelligence subject matter experts…
Added 6 mins ago
^DevOps Harness Engineer 6586844
Accenture Flex LLC Company
United States
Experience with Git GitHub and modern source control practices
Added 7 mins ago
Engineer II, Field Software
ASM
United States
As a Field Software Engineer, you help bring ASM's semiconductor equipment to life by supporting the software that drives robotics, valve systems, temperature controllers, and other…
Added 7 mins ago
Senior Supplier Quality Engineer
ZMC-US MA ZOLL Medical Corporation
Chelmsford, MA
The Senior Supplier Quality Engineer will be a leader on the Supplier Quality team, expected to be subject matter expert with regard to Supplier Quality processes and provide guidance and…
Added 8 mins ago
Senior Process Mechanical Engineer, Power
AtkinsRealis USA Inc.
United States
We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together,…
Added 8 mins ago
Process Mechanical Engineer, Power
AtkinsRealis USA Inc.
United States
We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together,…
Added 8 mins ago
AU
Process and Mechanical Drafter
AtkinsRealis USA Inc.
United States
- $35 to $55 USD / hour
We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together,…
Added 10 mins ago
Test Engineer II
Arcfield
Home, NY
We are seeking a detail-oriented and proactive Test Engineer II to join our engineering team. In this role, you will be responsible for designing, developing, and executing both manual and…
Added 10 mins ago
W
Systems and Infrastructure Engineer III (Vulnerability Management)
Walmart
BENTONVILLE, AR
- $80,000 to $155,000 USD / year
The Systems and Infrastructure Engineer III maintains and improves the systems that keep Walmart’s Mac and Windows devices and managed applications patched and secure. This role uses…
Added 10 mins ago
W
Staff, Systems and Infrastructure Engineer (Vulnerability Management) | Bentonville, Arkansas
Walmart
BENTONVILLE, AR
- $90,000 to $180,000 USD / year
As a Staff Systems and Infrastructure Engineer on APEX Vulnerability Management, you will be the team’s technical lead for keeping the technology Walmart associates use secure. You will…
Added 12 mins ago
UO
Engineer II, Autonomous Systems - Missouri Institute for Defense & Energy
University of Missouri System
MO
- $75,000 to $80,000 USD / year
The Engineer II - Autonomous Systems will support the development, integration, and testing of software for autonomous drone navigation and mission execution. The position will build…
Added 13 mins ago
MS
Part-Time Mission Analysis Engineer - Millennium Space Systems
Millennium Space Systems
El Segundo, CA
- $21.15 to $30.77 USD / hour
- Part-time
…system-of-systems; and (c) design and integration of mission data processing algorithms, such as EO/IR image processing or inertial tracking. They are key stakeholders in the design and…
Added 13 mins ago
Controls Engineer
Camaco LLC
United States
The purpose of the Controls Engineer is to support, improve, develop, research and test electrical components, equipment, and systems on the plant floor in order to meet production needs.
Added 14 mins ago
US
Mechanical Engineer II, Imaging Payloads
Urban Sky
Denver, CO
- $115,000 to $130,000 USD / year
…build, operate, and sell stratospheric balloon systems. The data we collect supports a wide range of applications, from real-time wildfire monitoring to urban mapping. Our technology is…
Added 15 mins ago
Piping/Mechanical Field Engineer - Sparks, NV
Military Spouse Jobs & VetJobs
United States
Salary Range: 91,000- 138,800 annually (salary range is based on market data; final salary offered is determined by education, experience, and qualifications of the applicant.)
Added 17 mins ago
Senior Digital Design Verification Engineer
Renesas Electronics
Austin, TX
Renesas is seeking a Senior Digital Design Verification Engineer to join our team developing complex power management SoCs. These products integrate digital control, telemetry, fault…

SpaceXSI

Sr. Software Engineer, Network (C++)

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 professional software development experience in lieu of a degree
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, NETWORK (C++)

At SpaceXSI, we design, build, and operate Colossus from the ground up. This includes the massive GPU clusters, high-speed interconnect fabric, and the software that makes it all work at unprecedented scale. Colossus powers Grok and our frontier AI models with a custom, high-performance datacenter network that delivers ultra-low latency and massive bandwidth across hundreds of thousands of GPUs.

As a Software Engineer on the Colossus Networking team, you will develop the core networking software that maximizes the performance and reliability of our datacenter fabric. Your work will directly impact training efficiency, model convergence, and the speed at which we can push the frontier of AI.

Our engineers own the full lifecycle of their software - from design and implementation to deployment, monitoring, and iteration based on real-world performance at scale. You will solve hard problems in distributed systems, high-performance networking, and real-time control of one of the largest AI supercomputers on Earth.

RESPONSIBILITIES:

Develop routing and traffic-engineering algorithms for the Colossus high-performance datacenter network
Develop highly reliable, real-time software designed to run on the switches that form the backbone of our low-latency, high-bandwidth AI training fabric
Participate in and lead architecture, design, and code reviews
Develop prototypes and run experiments to validate key design decisions at both small and full-cluster scale
Build tools for software development, deployment, data analysis, visualization, and testing across virtualized environments, hardware-in-the-loop setups, and live production clusters
Deploy reliable software updates through continuous integration and release systems with rigorous testing and monitoring

BASIC QUALIFICATIONS:

Bachelor’s degree in computer science, engineering, math, or technical discipline
5+ years of professional software development experience in lieu of a degree
Development experience in C or C++

PREFERRED SKILLS AND EXPERIENCE:

Strong professional experience writing high-performance C/C++ in production environments
Experience developing, debugging, and deploying software that runs at scale in real-world systems
Deep knowledge of networking protocols (UDP, TCP/IP, RDMA, etc.), distributed systems, and large-scale datacenter fabrics
Background in real-time systems, high-performance computing, low-latency networking, or resource-constrained environments
Creative problem-solving ability with exceptional analytical skills and strong engineering fundamentals
Excellent written and verbal communication skills
Ability to thrive in a fast-paced, dynamic environment with evolving requirements
Experience with security considerations in large-scale distributed systems

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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More about this job

Skills

C++
Traffic engineering
Design prototypes
Software development
Data analysis
CI/CD
BASIC
Computer science
C
Debugging
Problem solving
Analytical skills
Communication skills

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