Frontend Engineer

UMATR; San Francisco (CA); On-site; USD 100,000 - 140,000; Full time

Job summary

A dynamic AI startup in San Francisco is seeking a Frontend Engineer to build high-quality features with React and TypeScript. You will take ownership of projects and collaborate closely with designers and founders in an early-stage environment. The ideal candidate has 3+ years of experience, solid frontend architecture knowledge, and a builder mentality. Join this ground-floor opportunity to shape the future of AI-native solutions in a fast-paced setting.

Qualifications

• 3+ years of strong frontend engineering experience with React and TypeScript.
• Solid understanding of modern frontend architectures.
• Experience shipping production systems with high-quality engineering standards.

Responsibilities

• Build and ship high-quality frontend features using React, Next.js, and TypeScript.
• Collaborate with founders and cross-functional teams.
• Take end-to-end ownership of projects in a fast-moving environment.

Skills

Frontend engineering with React

TypeScript

Performance optimisation

Modern frontend architectures

State management

Tools

React

Next.js

Job description

UMATR are supporting an early-stage AI startup on a mission to help growing organisations stay aligned and efficient as they scale. Our product acts as an intelligent teammate that understands a company’s context, goals, and culture — giving teams unprecedented visibility into what’s happening across the business.

They're backed by top-tier global investors and experienced operators from some of the world’s leading tech companies. This is a ground-floor opportunity to build foundational systems that will power the next generation of AI-native enterprise software.

What You’ll Do

• Build and ship high-quality frontend features using React, Next.js, and TypeScript
• Partner closely with our designer to iterate rapidly on new UX and UI concepts
• Take end-to-end ownership of projects in a fast-moving, early-stage environment
• Collaborate with founders and cross-functional teams to shape product and technical direction
• (Bonus) Work across the stack when needed, supporting backend teams and integrations

What We’re Looking For

• 3+ years of strong frontend engineering experience with React and TypeScript
• Solid understanding of modern frontend architectures, state management, and performance optimisation
• Ability to learn quickly, work independently, and move with urgency
• Experience shipping production systems with high-quality engineering standards
• Bonus: experience in a fullstack environment or working closely with backend engineers
• Bias toward ownership, rapid execution, and craftsmanship

Ideal Background

• Experience building and scaling products at fast-moving startups (preferred), or at high-bar tech companies
• Comfortable with early-stage ambiguity and excited by zero-to-one challenges
• Strong product intuition and attention to detail
• A builder mentality — hands‑on, resourceful, and motivated to create something enduring