Full Stack Engineer - Jack and Jill : Job Details

Join to apply for the Full Stack Engineer role at Jack and Jill

This is a job for one of our customers; this listing is for an opportunity powered by our platform.

To find out details about this role and how to apply, read below:

Job Title: Full Stack Engineer

Company Description: Jack and Jill

Job Description:

This one's for the mission-driven builders. Join a small, mighty team as one of the earliest hires, working on frontier AI that powers personalised treatment plans. You'll be hands-on across stack and model — from backend pipelines and agent workflows to frontend interfaces — all with the goal of making life-saving technology smarter and safer every week.

Location: San Francisco, USA (in-person)

Responsibilities:

• Build and ship across backend (Python, PyTorch) and frontend (React/TypeScript)
• Orchestrate workflows that tie together retrieval, evaluation and safety systems
• Train, fine-tune and align large language models for healthcare use cases
• Prototype new features fast, validate with metrics, and ship to production

Ideal Candidate:

• Full-stack fluency, with comfort in both backend and frontend engineering
• Bonus points for hands-on experience with LLM training, RLHF or agent design
• Low ego, high agency, hungry to move fast in a high-impact environment
• Mission-driven and eager to apply tech to one of the toughest real-world problems

Compensation: Competitive salary + meaningful equity + relocation/visa support

How to Apply: To apply for this job speak to Jack, the world's first AI recruiter.

Seniority level: Mid-Senior level

Employment type: Full-time

Job function: Technology

Industries: Technology, Information and Internet

We're unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.