Hiring: AI Research Engineer at BluePill AI Company: Jack & Jill Location: Seattle, WA Job Posted Time: 2026-09-15 18:06:03 Employment Type: Remote Target Skills & Keywords : Fine-tuning, Go, LLM, Machine Learning, Make, QUIC, React About the job Required Skills: •You will own the end-to-end model training pipeline at BluePill AI, moving beyond simple API integrations to work directly within model weights. You'll fine-tune and align LLMs to create "AI consumers"—simulated audiences that react with 93% accuracy compared to human panels, revolutionizing how brands test products and messaging in minutes. •Why this role is remarkable •Work directly on the weights of foundational models using cutting-edge techniques like LoRA and RLHF rather than building wrappers around existing APIs. •Join a high-traction, $6M seed-funded startup backed by top investors like Pioneer Square Labs and Flying Fish Partners, with a product already hitting 93% human accuracy. •Shape the future of market research by building "AI consumers" in a small, elite team led by an ex-Amazon AI founder from Cornell. •What You Will Do •Own the complete end-to-end model training and alignment pipeline for BluePill AI's proprietary audience simulation engine. •Implement and iterate on advanced post-training techniques including SFT, DPO, and PEFT to align model behavior with complex human audience data. •Build and scale distributed training infrastructure to optimize the performance and deployment of foundational models across the platform. •The ideal candidate •Deep experience building foundational models or fine-tuning LLMs using advanced methodologies like RLHF and LoRA. •Strong background in machine learning research with the ability to implement novel approaches from academic papers into production systems. •Proven track record of optimizing distributed training infrastructure and working effectively in a fast-paced, high-ownership startup environment. •Who are Jack & Jill? •Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. Compensation: •Not Disclosed •Company Description •BluePill AI is a $6M seed-funded Seattle-based startup backed by Ubiquity Ventures and Pioneer Square Labs, building digital twins of real audiences for automated market research. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!