# Software Engineer, Pretraining Data

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. SOFTWARE ENGINEER, PRETRAINING DATA We're looking for Software Engineers to build the data systems behind our frontier models' initial training. You'll work on large-scale crawling, data platform, and pipeline infrastructure, turning raw dumps into the datasets our models train on, and making iteration with researchers fast and reliable. RESPONSIBILITIES: Data Platform: Build the platform that

- **Id**: 4008602
- **Url**: <https://alion.io/job/cursor-software-engineer-pretraining-data>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: middle
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Palo Alto, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 3
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-10T00:21:25Z
- **Employer posted date**: 2026-11-10
- **Last verified at**: 2026-11-10T08:42:34Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 4852
- **Description truncated**: no
- **Benefits**: Equity, Life insurance, Retirement plans
- **Relocation offered**: no
- **Industries**: AI Agents, Code Intelligence, AI Development Tools

## Company

- **Id**: 16873
- **Name**: Cursor
- **Domain**: cursor.com
- **Url**: <https://alion.io/company/cursor>
- **Size band**: 201-500
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 27
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 89
- **Computed at**: 2026-11-10T06:52:35Z

## Salary

- **Min**: 160000
- **Max**: 250000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 250000

## Technologies

- **AI Agents** — Optional: no
- **Multimodal AI** — Optional: no
- **Pre-training** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Experience years min**: 3
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-10T08:42:34Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 89
- **Reasons**: conf:1, win:early, comp:brand
- **Computed at**: 2026-11-10T10:23:33Z

## Pay

- **Stated usd annual**: 250000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.