AI Researcher, LLMs

Location: London, United Kingdom or New York, United States

Salary: $200,000–$300,000 base per year, plus discretionary performance-based bonuses and benefits.

Company

hirify.global applies scientific research and sophisticated computing to algorithmic trading and financial products.

What you will do

• Develop large language models from scratch for research, engineering, and trading workflows.
• Work across tokenizer training, dataset curation and mixing, pretraining, post-training, evaluation, inference, and live trading.
• Design research directions, ablations, and experiments that drive frontier capability gains.
• Build and ship code for model training, evaluation, and deployment.
• Collaborate with engineering, hardware, and systems teams using large-scale research clusters.

Requirements

• At least two years of hands-on experience training, post-training, or evaluating LLMs at scale.
• Direct experience with large-scale pretraining, post-training such as SFT or RL, LLM evaluation design and statistical analysis, or distributed training and inference systems.
• Ability to identify high-impact research directions, design decision-changing ablations, and update conclusions based on evidence.
• Strong engineering skills in GPU kernel development, lower-level PyTorch internals, or published frontier-style LLM research.

Culture & Benefits

• Work in a small, focused team with significant research independence and minimal bureaucracy.
• Access state-of-the-art research clusters with a high GPU-to-researcher ratio.
• Receive support from experienced engineering, hardware, and systems teams.
• Join a collaborative culture that values openness, transparency, diverse expertise, and impactful ideas.
• Competitive benefits package and eligibility for discretionary performance-based bonuses.

Hiring process

• AI tools are prohibited during interviews or assessments unless explicitly permitted.
• Candidate responses may be evaluated for authenticity; unauthorized AI assistance can lead to disqualification or offer withdrawal.