Founding AI Engineer for Bio Intelligence Platform

Proteus-Bio; San Francisco (CA); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Proteus is hiring an ML Engineer or AI Engineer to join our Biological Intelligence Platform in San Francisco and London. You will work on autonomous discovery for personalised medicine, designing models, evaluation protocols, and scalable ML systems while collaborating with cross-functional teams.

We value curiosity, ownership, and the ability to learn quickly. Biology background is welcome but not required; demonstrated projects and thinking matter more than schooling.

Qualifications

• Strong experience with PyTorch and Hugging Face Transformers, TRL, and Accelerate.
• Practical knowledge of LoRA, QLoRA and PEFT techniques.
• Familiarity with DPO/g-DPO for preference training and GRPO/PPO for online RL.
• Experience with reward models, verifiers, and outcome-based rewards.
• Experience with agent tool-use trajectories, credit assignment, and evaluation.

Responsibilities

• Develop and deploy ML/AI systems for autonomous discovery in biomedicine.
• Design evaluation protocols and run experiments with trackable results.
• Collaborate with teams to implement robust, scalable ML solutions.

Skills

PyTorch

Hugging Face

Transformers

TRL

Accelerate

LoRA

QLoRA

PEFT

DPO

PPO

online RL

Tool-use

Tools

LangGraph

RAG

Memory engineering

Tool schemas

Job description

Proteus is hiring an ML Engineer or AI Engineer to join our Biological Intelligence Platform in San Francisco and London. You will work on autonomous discovery for personalised medicine, designing models, evaluation protocols, and scalable ML systems while collaborating with cross-functional teams.

We value curiosity, ownership, and the ability to learn quickly. Biology background is welcome but not required; demonstrated projects and thinking matter more than schooling.