jobctl

Software Engineer, Ads Product

SpaceXSI - Palo Alto, CA - original posting ->
Status
Open
Remote policy
Not stated
Employment type
Not stated
Salary
Not stated
Categories
Engineering
Tech
gojavapythonrustscalaproduct
Source
xai
First observed
2026-08-18 21:02 UTC
Last seen
2026-10-13 05:08 UTC
Source claims posted
2026-06-02 01:05 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 understand the universe and help expand humanity’s knowledge and capabilities. We work across the full Super Intelligence stack: compute (Colossus supercomputers), models (Grok), and applications (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.

ABOUT THE ROLE:

X Ads is one of the highest-leverage product areas at X. You’ll work on systems that operate at massive scale, directly affect the business, and are being rebuilt with modern infrastructure and AI at the center. This is an opportunity to join a small, fast-moving team where early-career engineers can take on real ownership, learn from strong engineers, and ship products that matter.

We’re looking for high-slope software engineers who want to help rebuild and transform the X Ads Platform using SpaceXSI's infrastructure and AI stack.

This role is a great fit for engineers who are early in their careers but learn quickly, ship fast, and want to work on products and systems that operate at massive scale. You do not need to have deep ads experience already, but you should be excited to learn how large-scale advertising systems work and how AI can make ads more relevant, useful, and effective.

You’ll work across product, backend systems, infrastructure, and AI-powered features that directly impact the majority of X’s revenue.

RESPONSIBILITIES:

Build and ship product features across the X Ads Platform.

Work on systems related to ad delivery, targeting, optimization, measurement, and advertiser experience.

Use SpaceXSI's infrastructure and AI capabilities to improve the performance and quality of advertising products.

Contribute to distributed systems that need to be reliable, fast, and scalable.

Collaborate closely with engineers, product leads, and cross-functional partners to turn ideas into working products.

Learn quickly, take ownership, and operate in a fast-moving environment where high-quality execution matters.

Debug, maintain, and improve production systems that serve real users and drive significant business impact.

BASIC QUALIFICATIONS:

Strong software engineering fundamentals.

Ability to write clean, maintainable code and learn new codebases quickly.

Strong problem-solving skills and comfort working through ambiguity.

Experience building software through internships, projects, research, open-source work, startups, or full-time roles.

Interest in backend systems, distributed systems, data pipelines, product engineering, or AI applications.

A bias toward action: you like shipping, learning from real users, and improving quickly.

Strong ownership mindset and willingness to take responsibility for meaningful parts of the product.

Excitement about building high-quality product experiences for advertisers and users.

PREFERRED SKILLS AND EXPERIENCE:

Experience with ads, recommendations, search, ranking, marketplaces, payments, analytics, or growth systems.

Experience working with large-scale backend systems or data processing pipelines.

Experience with React, Golang, Python, Rust, gRPC, Java, or Scala.

Experience with machine learning, LLMs, experimentation, ranking, or optimization systems.

Prior startup, research, internship, or high-impact project experience.

You do not need to know every technology listed below. We care more about strong fundamentals, learning speed, and ability to ship.

React

Golang

Python

Rust

gRPC

Java / Scala

COMPENSATION AND BENEFITS:

$150,000 - $350,000 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: 100%

Based on 19 observation(s).

Timeline

  1. *
    #162001 2026-08-18 21:02 UTC
    Published
  2. ~
    #167728 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. ~
    #199954 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. ~
    #231400 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. ~
    #259361 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. o
    #386303 2026-08-26 18:35 UTC
    Not seen
    Miss 1 in a row
  7. o
    #388703 2026-08-26 22:37 UTC
    Not seen
    Miss 2 in a row
  8. ~
    #391867 2026-08-27 02:39 UTC
    Modified
    • source_updated_at
      2026-08-21T18:24:01-04:00->2026-08-26T19:38:56-04:00
  9. ~
    #394293 2026-08-27 06:39 UTC
    Modified
    • source_updated_at
      2026-08-26T19:38:56-04:00->2026-08-26T23:12:24-04:00
  10. ~
    #407539 2026-08-27 22:40 UTC
    Modified
    • source_updated_at
      2026-08-26T23:12:24-04:00->2026-08-27T18:09:48-04:00
  11. ~
    #557875 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
  12. ~
    #564629 2026-09-04 05:32 UTC
    Modified
    • source_updated_at
      2026-09-03T14:58:20-04:00->2026-09-04T00:53:32-04:00
  13. ~
    #646442 2026-09-08 23:51 UTC
    Modified
    • source_updated_at
      2026-09-04T00:53:32-04:00->2026-09-08T18:33:02-04:00
  14. ~
    #963359 2026-09-24 06:03 UTC
    Modified
    • source_updated_at
      2026-09-08T18:33:02-04:00->2026-09-23T23:22:06-04:00
  15. ~
    #975103 2026-09-24 18:07 UTC
    Modified
    • source_updated_at
      2026-09-23T23:22:06-04:00->2026-09-24T13:08:53-04:00
  16. ~
    #1100391 2026-09-30 22:44 UTC
    Modified
    • source_updated_at
      2026-09-24T13:08:53-04:00->2026-09-30T16:41:12-04:00
  17. ~
    #1295450 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...
  18. ~
    #1311524 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
  19. ~
    #1314498 2026-10-13 05:08 UTC
    Modified
    • Organisation
      SpaceXAI->SpaceXSI