Full-Stack Engineer for AI Marketplace

hud United State
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AI Summary

We're looking for a full-stack engineer to build a polished user experience for our high-performing product. Responsibilities include building and shipping end-to-end product features, translating product and design requirements into high-quality user interfaces, and optimizing applications for performance and cross-browser compatibility. Key requirements include strong experience owning products end-to-end, rapid learning and adaptability in technical environments, and a portfolio of shipped products or side projects.

Key Highlights
Full-stack engineer role
AI marketplace
Polished user experience
Key Responsibilities
Build and ship end-to-end product features
Translate product and design requirements into high-quality user interfaces
Optimize applications for performance and cross-browser compatibility
Technical Skills Required
Frontend development Backend development APIs User experience User interface Cross-browser compatibility Product ownership Rapid learning Adaptability
Benefits & Perks
Competitive compensation
100% covered top-of-the-line medical, dental, and vision
Lunch and dinner when in the office
Company-wide holiday break
Equinox membership
401k
Commuter benefits
Unlimited access to tokens for ChatGPT, Claude Code, Cursor
Nice to Have
Reinforcement learning
Post-training
Model training workflows
Product analytics tools
Experimentation

Job Description


About HUD

HUD is building infrastructure to create RL training data and evals for frontier AI agents, as well as a marketplace to sell these to frontier labs through the HUD marketplace. Our platform is used by frontier labs, Fortune 500 companies, and startups. We’ve raised $15M from top VCs and were YC W25.

About The Role

We’re looking for a full-stack engineer who spikes in front-end to build a polished user experiences for a high-performing product.

Responsibilities

  • Build and ship end-to-end product features across frontend and backend, with a strong emphasis on user experience
  • Translate product and design requirements into high-quality, intuitive user interfaces with strong attention to detail
  • Optimize applications for performance, responsiveness, and cross-browser compatibility
  • Develop and maintain backend services and APIs that power core product functionality
  • Talk directly with customers, understand their workflows, and turn messy real world feedback into product improvements

Experience

You may be a good fit if you have:

  • Strong experience owning products end-to-end and working across the stack
  • Evidence of rapid learning and adaptability in technical environments (e.g., programming competitions)
  • A portfolio of shipped products, side projects, or live demos that demonstrate your frontend craftsmanship
  • Startup experience in early-stage technology companies with ability to work independently in fast-paced environments
  • Familiarity with current AI tools and LLM capabilities
  • Strong communication skills for remote collaboration across time zones

Strong Candidates May Also Have

  • A standout portfolio showcasing exceptional UI/UX work, interaction design, or creative engineering
  • Experience with reinforcement learning, post-training, or model training workflows
  • Familiarity with product analytics tools and experimentation (e.g., A/B testing)

We prioritize technical aptitude and learning potential over years of experience. Motivated candidates are encouraged to apply even if they don't meet all criteria.

Team & Company Details

  • Team Size : ~15 people currently, mostly full-time in-person, but some remote.
  • Our team: Our team includes 4 International Olympiad medalists (IOI, ILO, IPhO), serial AI startup founders, and researchers with publications at ICLR, NeurIPS, etc.
  • Company stage: We have 8 figures in funding and high revenue growth. We’re scaling profitably and quickly to meet very strong demand.

Logistics

  • Employment : Full-time.
  • Location : On-site in the San Francisco Bay Area.
  • Visa Sponsorship : We provide support for relocation and visas for strong full-time candidates to the US.
  • Timeline : Applications are rolling. The process is 2 technical interviews and a 1-week work trial.

What we offer

  • Competitive compensation
  • 100% covered top-of-the-line medical, dental, and vision from Blue Shield of CA
  • Lunch and dinner when you’re in the office
  • Company-wide holiday break (Christmas Eve to New Year’s Day) on top of PTO and paid holidays
  • Other perks including an Equinox membership, 401k, and commuter benefits
  • Unlimited* access to tokens for ChatGPT, Claude Code, Cursor, etc. *By unlimited, we mean no one on our token usage leaderboard has ever hit a limit. So we have no idea what the limit is.

Due to high volume, we may not actively respond to every application, but feel free to contact us if we missed your application!

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