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David Joseph & CompanyPosted 4 days ago

Halluminate — Member of Technical Staff, Platform Engineering

$200,000–$250,000 year

On-siteSan Francisco, California, United States

Full TimeSenior LevelStartup

Job Summary

Build the training and inference infrastructure supporting customer usage of reinforcement-learning environments at scale. Research and develop next-generation RL environments that are more realistic, longer-horizon, and harder for frontier models. Ship tooling that increases the quality and throughput of environment creation, including synthetic data pipelines and platform analytics for costs and bottlenecks. Craft domain-specific verifiers and reward functions for financial workflows like presentation building and quantitative trading. Establish engineering practices and culture from the ground up as a founding Member of Technical Staff.

Required Qualifications

  • 2–8 years of platform or full-stack engineering experience
  • ideally building RL environments or ML infrastructure
  • Time spent at an early-stage startup (pre-seed to Series A)
  • experience as a founder
  • A track record as a platform, full-stack, or backend engineer at fast-moving, high-growth companies
  • A degree in CS, ML, or a related technical field
  • Demonstrated experience building scalable platforms for internal or external users
  • ML tooling, benchmarking, or agent products
  • A heavy user of AI coding tools
  • ships at high velocity
  • Based in the Bay Area
  • ready to relocate
  • able to work on-site 5 days a week
  • Open to visa transfers (e.g. OPT, H-1B transfers)

Desired Qualifications

  • Big-tech experience earlier in your career before moving to a startup
  • Hands-on experience building RL environments, evals, or benchmarks for AI agents
  • Background in, or strong interest in, fintech or financial services
  • Experience designing domain-specific verifiers or reward functions
  • cloud (AWS, S3) a plus

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