Jobs in the United States

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Added 1 min ago
Senior Software Engineer - Python
Veeva
Remote, United States
As Senior Software Engineer for a new product within Veeva, you will be a founding member of a team building our next major AI-driven platform - one that will transform how Life Sciences…
Added 1 min ago
RH
AI Development
Robert Half
Remote, United States
- $70 to $90 USD / hour
…long-term contract opportunity is ideal for an experienced engineer who can lead technical work independently, from solution design through production deployment, while building reliable…
Added 2 mins ago
HVAC Journeyman
Granite School District
Salt Lake City, UT
…digital temperature and energy management controls. Assists in implementation of Indoor Air Quality management plan providing clean, well ventilated buildings. Inspects mechanical and…
Added 2 mins ago
BC
Assistant County Administrator
Beaufort County South Carolina
Beaufort, SC
- $127,899.2 to $165,942.4 USD / year
…provides information or recommendations for the development and implementation of these standards, policies and procedures, including preparation of drafts for resolutions, ordinances,…
Added 3 mins ago
CM
Staff Software Engineer, Compiler
Code Metal
Boston, MA · San Francisco, CA · Washington, DC
- $170,000 to $200,000 USD / year
- Experience with dynamic-language implementation or analysis (CPython internals, PyPy, Cython, Numba, mypyc, or type inference for dynamic languages).
Added 3 mins ago
CM
Senior Software Engineer, Compiler
Code Metal
Boston, MA · San Francisco, CA · Washington, DC
- $170,000 to $200,000 USD / year
- Experience with dynamic-language implementation or analysis (CPython internals, PyPy, Cython, Numba, mypyc, or type inference for dynamic languages).
Added 4 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
GD
Lead Software Engineer
Green Dot Corporation
Los Angeles, CA
- $141,918 to $199,300 USD / year
We are seeking a highly skilled and motivated Lead Software Engineer to join our team, supporting a highly transactional (approx. 500-800 TPS) system. This role will be instrumental in…
Added 6 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 6 mins ago
Senior Site Reliability Engineer
Applaudo Studios
Louisville, KY
You are a Senior Site Reliability Engineer with strong cloud and reliability engineering fundamentals and the versatility to work across edge infrastructure, enterprise networking, mobile…
Added 8 mins ago
IG
Senior Mechanical Engineer
IntelliPro Group Inc.
surry, VA
- $80 to $85 USD / hour
We are seeking an experienced Mechanical Contract Engineer to lead and support engineering activities for commercial nuclear projects. The role involves managing design changes, overseeing…
Added 8 mins ago
Senior Firmware Engineer
Andrews Cooper Technology LLC
Snoqualmie, WA
Participate in the design, implementation, and delivery of large engineering projects that interact with multiple teams.
Added 9 mins ago
Full Stack Software Engineer
Two Six Technologies
Arlington, VA
We are looking for a Full-Stack Software Engineer to join one of our Stream-Aligned feature teams. In this role, you will own customer-facing product features end-to-end within a single,…
Added 10 mins ago
W
(USA) Manager, Procurement
Walmart
BENTONVILLE, AR
- $70,000 to $130,000 USD / year
Manager, Procurement Packaging Engineer to serve as the technical packaging lead within the procurement organization. In this role, you will translate sourcing and business needs into…
Added 10 mins ago
Cyber Systems Engineer – Vulnerability Management
Arcfield
Springfield, VA
Assess and manage the implementation of identified corrections associated with high visibility technical vulnerabilities.
Added 10 mins ago
Senior Software Engineer
Grainger Businesses
CHICAGO, IL
As a Senior Software Engineer (Software Engineer III), you will be involved in the full systems life cycle and responsible for designing, coding, configuring, testing, implementing and…
Added 10 mins ago
EU
Automotive Validation Engineer
Experis USA
Auburn Hills, MI
- $33 to $35 USD / hour
Our client is seeking an Automotive Validation Engineer to join their team. As an Automotive Validation Engineer, you will be part of the validation engineering effort supporting…
Added 10 mins ago
EU
Automotive Electronics Program Manager
Experis USA
Newark, CA
- $50 to $55 USD / hour
Drive complex systems development end-to-end - from defining technical requirements and attributes through implementation and series production maintenance - aligned with vehicle programs…
Added 10 mins ago
W
(USA) Process Engineer
Walmart
PILESGROVE, NJ
- $80,000 to $120,000 USD / year
Join Walmart Supply Chain as a Process Engineer and help improve how work gets done across our distribution network. In this early-career role, you’ll apply engineering fundamentals, data,…
Added 13 mins ago
CO
Water Resources Engineer
City of Altamonte Springs
Altamonte Springs, FL
- $52,920 to $98,000 USD / year
Responsible for managing the City's water conservation program, including implementation, monitoring, coordination, and reporting of water conservation activities and initiatives.
Added 14 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 15 mins ago
Sr. Power Electronics Engineer - High Voltage, Satellites (Starlink)
SpaceX
Redmond, WA
Demonstrated full-cycle ownership of a hardware project from concept to implementation
Added 20 mins ago
J
Civil/Structural Engineer
Jobot
Thousand Oaks, CA
- $120,000 to $165,000 USD / year
Civil/Structural Engineer PE/SE (Commercial | Multifamily | High-End Residential)
Added 20 mins ago
Sr. Software Engineer (EHR Integration Team)
Natera
Remote, United States
USCDI, Da Vinci implementation guides, or ONC certification work.
Added 20 mins ago
Mid-Level Manufacturing Engineer
Huntsville, AL
FALCATA Production Division is looking for a Mid-Level Manufacturing Engineer, based in Huntsville, AL (Discovery). This group provides products and services in the areas of radar,…

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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