Senior AI-First Full-Stack Engineer

Ersilia; San Francisco (CA); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Ersilia is hiring a Senior Full-stack Engineer to own large parts of the product from ideation to implementation. You will balance frontend (React/TypeScript) and backend (Python/Flask) work while building AI-powered creator tools, collaborating with AI PMs and ML engineers, and shaping what AI can do in product.

You will lead frontend development with a strong focus on UI/UX and create scalable systems that handle millions of page views daily, with the goal of reaching billions as the platform

Qualifications

• 5+ years of full-stack engineering experience.
• AI-native work style with concrete examples from the last 6 months.
• Proficient in TypeScript and Python for frontend/backend.
• Based in SF or NY, hybrid in-office Tue–Thu.
• Experience with SQL and Postgres.

Responsibilities

• Build and iterate on AI-powered creator tools with AI PMs and ML engineers.
• Scale products to billions of views and ensure frontend excellence.
• Lead frontend development with delightful UI/UX.
• Create systems and understand how components interact.
• Apply AI as the default approach from scoping to code review.

Skills

Full-stack

AI-native

TypeScript

Python

SQL

Postgres

Customer empathy

Ambiguity tolerance

Tools

Cursor

Copilot

Claude Code

LLM tooling

Job description

Ersilia is hiring a Senior Full-stack Engineer to own large parts of the product from ideation to implementation. You will balance frontend (React/TypeScript) and backend (Python/Flask) work while building AI-powered creator tools, collaborating with AI PMs and ML engineers, and shaping what AI can do in product.

You will lead frontend development with a strong focus on UI/UX and create scalable systems that handle millions of page views daily, with the goal of reaching billions as the platform