Early-Stage Frontend Engineer — AI Startup (SF)

Jack & Jill; San Francisco (CA); On-site; USD 120,000 - 170,000; Full time

Job summary

Jack & Jill is seeking a Frontend Engineer to lead the user-facing side of our AI-powered product in San Francisco. You will architect and own complex interfaces using React and TypeScript, working with seasoned founders to shape the frontend direction.

You will collaborate with backend, product, and design teams to deliver high-performance features, drive frontend best practices, and help scale a fast-paced startup from day one.

Qualifications

• Experience in frontend development with JavaScript/TypeScript and React.
• Experience integrating frontend apps with backend APIs while maintaining performance.
• Strong UI/UX sense and passion for intuitive, high-quality user experiences.

Responsibilities

• Architect and build robust, scalable user interfaces for new product features using modern frameworks.
• Collaborate directly with backend, product, and design teams to deliver integrated, high-performance solutions.
• Drive the adoption of frontend best practices and shape the engineering culture from the ground up.

Skills

JavaScript

TypeScript

React

Frontend development

Job description

Jack & Jill is seeking a Frontend Engineer to lead the user-facing side of our AI-powered product in San Francisco. You will architect and own complex interfaces using React and TypeScript, working with seasoned founders to shape the frontend direction.

You will collaborate with backend, product, and design teams to deliver high-performance features, drive frontend best practices, and help scale a fast-paced startup from day one.