Jobs in the United States

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Added 1 min ago
Snowflake Data Engineer
EXL Talent Acquisition Team
NY
We are looking for an experienced, hands-on Data Engineer with strong expertise in Fivetran, dbt, Snowflake, and modern cloud data engineering practices. The candidate should also have…
Added 5 mins ago
Senior Software Engineering Manager, AI/ML
Google
San Francisco, CA
Like Google's own ambitions, the work of a Software Engineer goes beyond just Search. Software Engineering Managers have not only the technical expertise to take on and provide technical…
Added 52 mins ago
Field System Technician
Bechtel
Millersport, OH
…lasting positive impact. We serve the Infrastructure; Nuclear, Security & Environmental; Energy; Mining & Metals, and the Manufacturing and Technology markets. Our services span from…
Added 56 mins ago
J
Technical Architect Senior
Jobgether
Remote, United States
- $201,950 USD / year
Serve as the primary technical expert, guiding teams throughout platform development, testing, deployment, and production operations.
Added 1 hour ago
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Remote, United States
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build enterprise-scale solution supporting forecasting, capacity planning, scheduling,…
Added 1 hour ago
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Remote, United States
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build enterprise-scale solution supporting forecasting, capacity planning, scheduling,…
Added 1 hour ago
II
Senior PKI & Cryptographic Infrastructure Engineer
IDR Inc.
Denver, CO
- $90 to $95 USD / hour
IDR is seeking a Senior PKI & Cryptographic Infrastructure Engineer to join one of our top clients for a remote opportunity. In this role, you will lead the enhancement and automation of…
Added 1 hour ago
J
Software Engineer Lead
Jobgether
Remote, United States
- $105,000 to $135,000 USD / year
As a Software Engineer Lead, you will oversee the design, development, and lifecycle management of enterprise software solutions supporting digital banking, financial applications, and…
Added 1 hour ago
O
Senior Network Developer
Oracle
Seattle, WA · Nashville, TN · Redwood City, CA · Santa Clara, CA · Reston, VA
- $91,400 to $187,000 USD / year
As a Sr Network Development Engineer, you will be responsible for helping design, build, test, deploy and operate highly scalable solutions to support Oracle’s next-generation Cloud…
Added 1 hour ago
Full Stack Java Engineer
Miratech
Remote, United States
The role suits a hands-on engineer with strong software development fundamentals who can take features from detailed technical design through implementation, testing, deployment, and…
Added 2 hours ago
Staff Machine Learning Engineer（Risk Intelligence/AI Agent）
OKX
San Jose, CA
…formulation, feature engineering, and model development to real-time deployment, monitoring, experimentation, and continuous…
Added 2 hours ago
SentinelOne Engineer
Jobgether
Remote, United States
The SentinelOne Engineer will play a critical role in managing, securing, and optimizing advanced endpoint detection and response capabilities across mission-critical environments. In this…
Added 2 hours ago
Senior Software Engineer - Cloud SaaS - IE&A
Jobgether
Remote, United States
We are looking for an experienced Senior Software Engineer to help build and scale a new cloud-based SaaS platform from the ground up, serving the welding and fabrication industry. In this…
Added 2 hours ago
Cloud Security Engineer
Jobgether
Remote, United States
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Cloud Security Engineer based in the United States.
Added 2 hours ago
Senior Technical Engineering Leader - Guidewire PolicyCenter & Policy Lifecycle
MAPFRE Insurance
Webster, MA
Drive technical decision-making while balancing business priorities, scalability, security, maintainability, and operational excellence.
Added 2 hours ago
Senior Ellucian Technical and Integrations Engineer
State of Massachusetts
Boston, MA
Added 2 hours ago
AI Solutions Engineer
ISACA
Remote, United States
Coordinate with Information Technology, Information Security, Data, and other applicable teams regarding system integrations, data requirements, security controls, and deployment…
Added 2 hours ago
Sr. Principal Electrical Engineer IV
Northrop Grumman
Chandler, AZ
Northrop Grumman Space Systems is currently seeking a Lead Sr. Principal Electrical Engineer (Strike) in our Chandler AZ facility.
Added 2 hours ago
Senior Technical Writer - SATCOM Modems
Comtech Telecom
Chandler, AZ
Engineer-Level Collaboration: Partner closely with systems architects, hardware engineers, software developers, product managers, and test teams to gather highly technical product data,…
Added 2 hours ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 2 hours ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 2 hours ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 2 hours ago
DS
(1119604) Lead Software Engineer - Emerging Technologies
Diversified Services Network, Inc.
Remote, United States
- $140,000 to $145,000 USD / year
Diversified Services Network, Inc. (DSN) is seeking a full-time Lead Software Engineer – Emerging Technologies to join our team in your choice of our Chicago, IL; Peoria, IL; Irving, TX; or…
Added 2 hours ago
SS
Linux Engineer
Samsung SDS America
Plano, TX
- $156,000 to $166,000 USD / year
We are seeking a Linux Infrastructure Engineer to manage, optimize, and secure enterprise Linux environments across on-premises data centers and public cloud platforms. This role focuses on…
Added 2 hours ago
AW
IT Infrastructure Engineer II
ANDREW WOMMACK MINISTRIES INC
Woodland Park, CO
- $6,500 to $7,501 USD / month
The IT Operations Engineer II supports the planning, engineering, deployment, and maintenance of secure, scalable, and reliable technology solutions across multiple departments and…

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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