jobctl

Model Engineer, Voice

SpaceXSI - Palo Alto, CA - original posting ->
Status
Open
Remote policy
Not stated
Employment type
Not stated
Salary
Not stated
Categories
Model
Tech
kubernetessparkcpppythonrustsoftware
Source
xai
First observed
2026-08-18 21:02 UTC
Last seen
2026-11-02 22:03 UTC
Source claims posted
2026-03-16 20:39 UTC
Consecutive misses
0 of 3

What the posting says

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.

MODEL ENGINEER, VOICE

You'll join the Grok Voice Model team as a software engineer. You'll design, build, and run the software systems behind Grok Voice, which delivers natural, low-latency, multilingual spoken interactions across devices and in real time. The team owns the full engineering stack behind the model, from large-scale data processing to distributed training to production deployment.

RESPONSIBILITIES:

Design, build, and maintain large-scale distributed data pipelines that ingest, process, and annotate real-world and synthetic audio, so the training and evaluation systems get reliable, high-quality data

Build and optimize the distributed training infrastructure and software for speech-language models in JAX and PyTorch, including the systems that run supervised fine-tuning and reinforcement learning at scale

Build automated evaluation and testing systems that measure accuracy, audio quality, latency, and real-time performance, plus the experimentation infrastructure used to validate every model release

Integrate voice models into production applications and real-time services, write the technical specifications for spoken interactions, and own deployment from prototype to global scale with a focus on stability, low latency, and reliability

Profile and optimize system performance across training and inference, including throughput, latency, memory use, and compute efficiency

BASIC QUALIFICATIONS:

Bachelor's degree in computer science, software engineering, computer engineering, electrical engineering, or another engineering discipline

Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++

PREFERRED SKILLS AND EXPERIENCE:

Experience building and running large-scale distributed training and inference systems on Kubernetes

Expert-level Python, writing clean, efficient, production-quality code for large-scale systems

Experience implementing and optimizing model training and inference software in JAX or PyTorch

Experience building automated testing, evaluation, and A/B experimentation pipelines for production systems

Hands-on experience building distributed data processing systems with tools like Spark and Ray

A proactive, self-driven attitude and the ability to deliver in a fast-paced, high-caliber team

COMPENSATION AND BENEFITS:

$150,000 - $450,000 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.

Quality

Completeness: 45%
Honesty: 90%

Based on 22 observation(s).

Timeline

  1. *
    #161968 2026-08-18 21:02 UTC
    Published
  2. ~
    #167695 2026-08-19 01:02 UTC
    Modified
    • source_updated_at
      2026-08-18T15:14:36-04:00->2026-08-18T18:10:46-04:00
  3. ~
    #199920 2026-08-20 01:16 UTC
    Modified
    • source_updated_at
      2026-08-18T18:10:46-04:00->2026-08-19T18:53:03-04:00
  4. ~
    #231366 2026-08-21 04:27 UTC
    Modified
    • source_updated_at
      2026-08-19T18:53:03-04:00->2026-08-20T20:36:54-04:00
  5. ~
    #259327 2026-08-21 23:53 UTC
    Modified
    • source_updated_at
      2026-08-20T20:36:54-04:00->2026-08-21T18:24:01-04:00
  6. ~
    #388630 2026-08-26 22:37 UTC
    Modified
    • source_updated_at
      2026-08-21T18:24:01-04:00->2026-08-26T17:48:54-04:00
  7. ~
    #394258 2026-08-27 06:39 UTC
    Modified
    • source_updated_at
      2026-08-26T17:48:54-04:00->2026-08-26T23:12:24-04:00
  8. ~
    #407504 2026-08-27 22:40 UTC
    Modified
    • source_updated_at
      2026-08-26T23:12:24-04:00->2026-08-27T18:09:48-04:00
  9. ~
    #557838 2026-09-03 21:32 UTC
    Modified
    • Locations
      Palo Alto, California->Palo Alto, CA
    • source_updated_at
      2026-08-27T18:09:48-04:00->2026-09-03T14:58:20-04:00
  10. ~
    #564592 2026-09-04 05:32 UTC
    Modified
    • source_updated_at
      2026-09-03T14:58:20-04:00->2026-09-04T00:53:32-04:00
  11. ~
    #646405 2026-09-08 23:51 UTC
    Modified
    • source_updated_at
      2026-09-04T00:53:32-04:00->2026-09-08T18:33:02-04:00
  12. ~
    #963325 2026-09-24 06:03 UTC
    Modified
    • source_updated_at
      2026-09-08T18:33:02-04:00->2026-09-23T23:22:06-04:00
  13. ~
    #975069 2026-09-24 18:07 UTC
    Modified
    • source_updated_at
      2026-09-23T23:22:06-04:00->2026-09-24T13:08:39-04:00
  14. ~
    #1100358 2026-09-30 22:44 UTC
    Modified
    • source_updated_at
      2026-09-24T13:08:39-04:00->2026-09-30T16:41:12-04:00
  15. ~
    #1295412 2026-10-12 13:22 UTC
    Modified
    • Description
      SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
  16. ~
    #1311485 2026-10-13 01:08 UTC
    Modified
    • Description
      SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
    • source_updated_at
      2026-09-30T16:41:12-04:00->2026-10-12T19:35:19-04:00
  17. ~
    #1314459 2026-10-13 05:08 UTC
    Modified
    • Organisation
      SpaceXAI->SpaceXSI
  18. ~
    #1330543 2026-10-13 21:10 UTC
    Modified
    • Description
      SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
    • source_updated_at
      2026-10-12T19:35:19-04:00->2026-10-13T15:30:03-04:00
  19. ~
    #1334755 2026-10-14 01:11 UTC
    Modified
    • Description
      SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
    • source_updated_at
      2026-10-13T15:30:03-04:00->2026-10-13T20:15:02-04:00
  20. ~
    #1488255 2026-10-22 18:01 UTC
    Modified
    • source_updated_at
      2026-10-13T20:15:02-04:00->2026-10-22T11:10:16-04:00
  21. ~
    #1588273 2026-10-28 10:01 UTC
    Modified
    • Title
      Software Engineer - Voice Model->Software Engineer, Voice Model
    • Description
      SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
    • source_updated_at
      2026-10-22T11:10:16-04:00->2026-10-28T02:54:29-04:00
  22. ~
    #1691584 2026-11-02 22:03 UTC
    Modified
    • Title
      Software Engineer, Voice Model->Model Engineer, Voice
    • Description
      SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...->SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where...
    • source_updated_at
      2026-10-28T02:54:29-04:00->2026-11-02T14:14:29-05:00