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About the Role
HAIL (HRT AI Labs) is seeking an LLM-focused AI Researcher to develop and maintain powerful AI models used by trading teams. The LLM team builds large language models from scratch, deploying them across the firm to accelerate research, engineering, and trading workflows with the goal of producing best-in-world LLMs for specific use cases.
Responsibilities
- Work on every stage of the model development loop: tokenizer training, dataset curation and mixing, pretraining, post-training, evaluation design, inference, and live trading.
- Pursue research directions independently within a small, focused team.
- Ship code that drives frontier capability gains.
Requirements
- Two or more years of hands-on experience training, post-training, or evaluating LLMs at scale.
- Direct experience with at least one of: large-scale pretraining, post-training (SFT, RL), LLM evaluation design and statistical analysis, or distributed training/inference systems.
- Research taste: ability to identify what's worth trying next, design ablations that change decisions, and update beliefs from evidence.
- Strong engineering skills valued: GPU kernel development, lower-level PyTorch internals, or published work on a frontier-style LLM result.
Skills
- LLM development
- Tokenizer training
- Dataset curation and mixing
- Pretraining
- Post-training
- Evaluation design
- Inference
- Live trading
- GPU kernel development
- PyTorch internals
Location
- Global offices
Work Type
- Full-time
Experience Level
- Two or more years of experience
Salary/Compensations
- 200,000 to 300,000 USD per year
Benefits
- Discretionary performance-based bonuses
- Competitive benefits package
About the Company
- Hudson River Trading (HRT) brings a scientific approach to trading financial products.
- HRT has built one of the world's most sophisticated computing environments for research and development.
- HRT researchers are at the forefront of innovation in the world of algorithmic trading.
- HRT welcomes a variety of expertise: mathematics and computer science, physics and engineering, media and tech.
- HRT is a community of self-starters motivated by the excitement of being at the cutting edge of automation.
- HRT values openness and transparency, and celebrates great ideas.
- HRT embraces a culture of togetherness.
- HRT has offices all over the globe and benefits from varied and unique perspectives.
Equal Opportunity
- HRT is an equal opportunity employer; so whoever you are we’d love to get to know you.