Startups · AI

Member of Technical Staff - Research / Post-Training

Halluminate · San Francisco · On-site

← All jobs
About Halluminate

Halluminate builds RL environments for financial services — computer-use and tool-use gyms that train frontier AI models on real investment banking, private equity, and consulting work. Backed by Y Combinator and Alchemist.

About the role

Base: $200–275k · Equity: 0.15–0.30% · Location: San Francisco, in-person Train open-source frontier models on our in-house environments to validate quality and build research insights.

More about this role

Halluminate is an applied AI and data company building computer-use and tool-use RL gyms to train AI agents on real financial services work — Excel modeling, pitch decks, and everything investment banking, private equity, and hedge funds rely on. We work with frontier labs, graduated from Y Combinator (S25), and raised a seed round to scale the team.

Base: $200–275k · Equity: 0.15–0.30% · Location: San Francisco, in-person

Lead our in-house research and post-training efforts.

Train open-source frontier models on our in-house environments to validate quality and build research insights.

Lead our public-facing benchmark and leaderboard efforts for frontier models.

Publish findings in blogs and papers to share with the broader research community.

Contribute to core platform engineering as needed — AI tooling, data collection pipelines, partnering with environment and reward designers.

Build our engineering team culture from the ground up.

Experience in model post-training.

Experience publishing papers and sharing open research.

Familiarity building evaluations, benchmarks, or RL for AI agents.

Startup speed: iterate quick, ask quick, respond quick.

Strong product and user...

Read the full posting on Halluminate's site ↗

Engineering

Build your edge while you search

Free tools for founders and investors, plus VC Unfiltered, our take on startups, venture and the people who build them.