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SpaceXAI

Software Engineer - Training/Inference (C++)

SpaceXAI · Palo Alto, CA

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
66 days
SpaceXAI's roles stay open a median of 66 days
Reposted
No
Salary listed
Yes
32% of SpaceXAI's roles list one
Ghost-job risk at SpaceXAI
high
221 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
2026-10-08

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 focused on Training/Inference at SpaceXAI, you will design and optimize a high-performance inference platform that serves millions of users. Your responsibilities include architecting scalable distributed infrastructure, optimizing model inference for latency and throughput, and developing CI/CD tools for deployment and updates. This role demands a hands-on approach and a commitment to engineering excellence in a fast-paced environment.

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

  • Deep low-level systems programming (C/C++ or Rust)
  • Experience with large-scale, high-concurrent production serving
  • Experience with GPU inference engines (vLLM, SGLang, Triton, TensorRT-LLM, etc.)
  • Strong background in system optimizations: batching, caching, load balancing, parallelism
  • Low-level inference optimizations: GPU kernels, code generation
  • Algorithmic inference optimizations: quantization, speculative decoding, distillation, low-precision numerics

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

  • High-impact role with direct influence on user interaction speed and reliability
  • Flat organizational structure may require self-motivation and initiative
  • Focus on low-level systems programming may not appeal to all software engineers

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

Listed by SpaceXAI on their greenhouse job board, last confirmed open on 2026-10-08. PitchMeAI is not the employer.

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