Jobs in the United States

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Added 42 mins ago
Software Engineer – Digital Asset Management, Retail & Marcom Engineering
Apple
Austin, TX
Architect and Develop Backend Services: Design, implement, and maintain high-throughput,
Added 45 mins ago
Machine Learning Ops, AI Engineer
Mission Underwriting Services
Remote, United States
…security, monitoring and observability, incident response, model and agent lifecycle controls, model drift detection, and governance evidence. The role partners across engineering, data,…
Added 47 mins ago
TT
Senior/Staff Product Engineer, Applied AI
True Talent Solutions Partners
San Francisco, CA
- $200,000 to $300,000 USD / year
- Architect and lead core backend systems, including real-time matching and automated vetting pipelines.
Added 48 mins ago
Principal II AI Platform Engineer, GenAI
Teladoc Health, Inc.
Remote, United States
Architect AI solutions on Databricks, including platform integration, model serving, retrieval, and governance, with secure and reusable patterns for enterprise applications.
Added 1 hour ago
Intern - Systems Engineer
TX
Must have authorization to work in the United States without requiring visa sponsorship
Added 1 hour ago
Senior Platform DevOps Engineer - TS/SCI w/ Poly
Parsons Technical Services, Inc.
MD
Develop and optimize engineering workflows and processes to support AI model and agent development, deployment, and maintenance.
Added 1 hour ago
Salesforce Agentforce Architect
NTT DATA Americas, Inc.
Atlanta
· Architect agent-assisted and agentic workflows across opportunity, configuration, pricing, quoting, contracting, ordering and revenue lifecycle processes.
Added 1 hour ago
Executive Director, AI/ML - Forecasting, Constraint Optimization, and Recommendation Systems
JPMC page
New York, NY · Palo Alto, CA · NY
…formulation and architecture design through data system creation, AI model development, optimization, deployment, and ongoing production…
Added 1 hour ago
Staff Software Engineer, Imitation Learning - Behavior Planning, Embodied AI
General Motors LLC
Remote, United States
Architect and build modular ML software spanning data preparation, training, evaluation, and production integration.
Added 1 hour ago
Head of Artificial Intelligence
Space Dinosaurs
Remote, United States
Architect & Ship AI Systems: Personally design and implement LLM workflows, tool-using agents, retrieval and memory systems, structured data pipelines, feedback loops, evaluation…
Added 1 hour ago
Sales Engineer - Chicago (Majors)
Cyera
Chicago, IL
Identify client business issues and desired outcomes and architect an information availability solution that utilizes all of Cyera's products and services
Added 1 hour ago
Sr. Software Engineer, Pretraining Data
SpaceXAI
Palo Alto, CA
…and acquired data into training-ready datasets for frontier model pretraining. Own high-throughput data pipelines, orchestration systems, and tooling that enable fast, reliable, observable,…
Added 1 hour ago
E
AI Architect (Technical Lead)
Expression
Shirlington, VA
- $200,000 to $230,000 USD / year
Expression is seeking an experienced AI Architect to serve as Technical Lead designing and technically integrating advanced Artificial Intelligence (AI) and Large Language Model (LLM)…
Added 2 hours ago
Principal Solution Architect, Platform Engineering
FIS Management Services LLC
United States
Reporting to the Head of Architecture for Platform Engineering, the Principal Solution Architect plays a crucial role in designing and delivering enterprise platform capabilities. Platform…
Added 2 hours ago
Principal Solution Architect, Platform Engineering, SRE
FIS Management Services LLC
United States
Reporting to the Head of Architecture for Platform Engineering, the Principal Solution Architect plays a crucial role in designing and delivering enterprise platform capabilities. Platform…
Added 2 hours ago
Solution Architect, Agent & Software Testing
Tonic AI
Remote, United States
…customer is getting out of our product. The ideal Solutions Architect will be proactive, coming up with creative solutions if customers aren't getting what they need, and pressing customers…
Added 2 hours ago
Hardware Security Architect, Principal
Positron AI
Remote, United States
…the ground up for low-latency, high-throughput large language model inference. Our first-generation ASIC, Asimov, is a cutting-edge accelerator targeting frontier AI workloads, with…
Added 2 hours ago
Solution Architect
DynatraceLLC
Boston
The Enterprise Solution Architect is a combination of an infrastructure, automation expert, coder, trusted advisor and cloud services authority who will be responsible for leading the…
Added 2 hours ago
A
Controller
AfterQuery
San Francisco, CA
- $220,000 to $250,000 USD / year
Founding Impact: You will own and architect core infrastructure systems that power our platform from the ground up.
Added 3 hours ago
Lead System Architect
Visa Technology and Operations LLC
Foster City, CA
Visa requires at least 3 days in office, expectations of these days will be confirmed by your Hiring Manager
Added 3 hours ago
Lead Information Security Engineer - Cyber Defense
Fifth Third Bank, National Association
United States
The Lead ISE will help architect cloud-based workloads and automate integration and deployments including application code, infrastructure code, and security-focused tooling and…
Added 3 hours ago
Cyber Security Architect
Booz Allen Hamilton_United States
Fort Meade, MD · Pensacola, FL · Mechanicsburg, PA · Oklahoma City, OK · San Antonio, TX · Ford Island, HI · Scott AFB, IL · Hill AFB, UT
As a Cybersecurity Architect on our project, you’ll lead the architecture and design efforts of innovative Cybersecurity solutions and service offerings to protect federal networks. You’ll…
Added 3 hours ago
Software Engineer, Senior
Booz Allen Hamilton_United States
Dahlgren, VA
…anticipate future concerns. That’s because you’re a software architect with a solid background in designing secure, scalable, and resilient software solutions for classified defense and…
Added 3 hours ago
Senior CRM Solutions Architect
Eve
San Francisco, CA
Eve's revenue teams run on our CRM, and they need an expert they can count on. As Senior CRM Solutions Architect, you will be the product owner of our CRM: the senior technical expert and…
Added 3 hours ago
Lead Architect - Cloud Financial Management, Reporting and AI
JPMC page
Jersey City, NJ
As a Lead Architect at JPMorganChase within Platform Operations and Infrastructure Platforms, you will own the product and architecture strategy for scheduled reporting and an agent-based…

SpaceXAI

Sr. Software Engineer, Pretraining Data

Palo Alto, CA, United States

$220,000 - $357,000 USD

Apply on jobs.ashbyhq.com About employer

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Job details

Pay: $220,000 - $357,000 USD
Experience: 5+ years of professional software engineering experience building distributed systems and/or large-scale data infrastructure
Posting language: English
Posted: Nov 10, 2026

Original job description

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.

SR. SOFTWARE ENGINEER, PRETRAINING DATA

We're looking for Senior Software Engineers to build and own 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. As a senior engineer, you'll set technical direction for these systems, lead projects across teams, and mentor other engineers as our pretraining data scales.

RESPONSIBILITIES:

Data Platform: Design, build, and scale the distributed infrastructure that transforms raw web, code, multimodal, and acquired data into training-ready datasets for frontier model pretraining. Own high-throughput data pipelines, orchestration systems, and tooling that enable fast, reliable, observable, and reproducible data processing at massive scale, with end-to-end visibility into data lineage, freshness, and pipeline health.
Data Quality: Build and deploy high-performance models and algorithms to classify, rank, deduplicate, filter, and clean training data at extreme throughput. Design and execute rigorous experiments across data mixtures, sampling strategies, and quality thresholds to quantify their impact on training loss, downstream evaluations, and model capabilities, translating research findings into production systems.
Crawling: Build and optimize large-scale web crawling infrastructure spanning URL discovery, prioritization, host scheduling, fetching, parsing, and content extraction. Improve crawl coverage, efficiency, and reliability through intelligent scheduling, anti-bot resilience, robust extraction systems, and automated recovery, ensuring high-quality web data flows seamlessly into downstream training pipelines.
Technical Leadership & Collaboration: Lead complex engineering initiatives across Data Platform, Data Quality, Crawling, Acquisition, and model training teams. Influence technical direction, drive architectural decisions, mentor engineers, and translate improvements in data infrastructure, coverage, and quality into measurable gains in model performance.

BASIC QUALIFICATIONS:

5+ years of professional software engineering experience building distributed systems and/or large-scale data infrastructure

PREFERRED SKILLS AND EXPERIENCE:

Strong infrastructure or data platform background, ideally with a spike of outlier depth
High-slope engineer who has moved unusually fast (e.g., staff-level ownership within a few years) or brings relevant domain experience
Able to architect and ship end-to-end with high ownership, debug complex systems independently, and work alongside AI agents
Strong intuitions about large-scale distributed systems, including running them reliably at frontier scale
Track record of leading technical projects across teams and mentoring other engineers
Excited to learn how pre-training data shapes model quality, and want the ownership and visibility that comes with building systems that feed frontier training runs

ADDITIONAL REQUIREMENTS:

Onsite role: must be able to work in person at the Palo Alto office

COMPENSATION AND BENEFITS:

The annual compensation range for this role is listed below.

Annual Salary:

$220,000 - $357,000 USD

Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

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.

Work requirements

Jobs in the United States