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SpaceXAI

Software Engineer - Network (C++)

SpaceXAI · Palo Alto, CA; Seattle, WA

Posted about 2 months ago · $180,000 - $440,000

or apply directly on SpaceXAI's site. We never take the application ourselves.

Is this posting real?

This role has been open
55 days
SpaceXAI's roles stay open a median of 55 days
Reposted
No
Salary listed
Yes
32% of SpaceXAI's roles list one
Ghost-job risk at SpaceXAI
high
171 stale, 5 reposted of 258 open
Hiring momentum
339 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-27

Measured from postings appearing on and disappearing from SpaceXAI's own greenhouse board since 2026-08-03. Full hiring picture for SpaceXAI.

About this role

As a Software Engineer on the Colossus Networking team at SpaceXAI, you will be responsible for developing core networking software that enhances the performance and reliability of a high-performance datacenter network. Your role involves creating routing algorithms, real-time software for network switches, and tools for software development and deployment, all while contributing to the full software lifecycle. You will also engage in architecture and design reviews, and run experiments to validate design decisions.

Our read on this posting4.0out of 5
benefits
4/5
freshness
1/5
career value
5/5
role clarity
5/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of SpaceXAI as an employer.

What you need

  • Bachelor’s degree in computer science, engineering, math, or a related technical discipline; OR 2+ years of professional software development experience in lieu of a degree
  • Strong development experience in C or C++

Nice to have

  • 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

What you get

  • $180,000 - $440,000 USD
  • Equity
  • Comprehensive medical, vision, and dental coverage
  • Access to a 401(k) retirement plan
  • Short & long-term disability insurance
  • Life insurance

Worth weighing

  • The role involves working on a large-scale AI supercomputer, which may present unique challenges and opportunities for growth.
  • The compensation range is broad, indicating potential variability based on experience and negotiation.
  • The emphasis on a fast-paced environment suggests that adaptability and quick learning will be crucial.
  • The job requires strong communication skills, which may be essential for collaboration in a flat organizational structure.

Summarised from SpaceXAI's posting. Read the full original.

Listed by SpaceXAI on their greenhouse job board, last confirmed open on 2026-09-27. PitchMeAI is not the employer.

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