Senior Full-Stack Software Engineer (React/TypeScript) - Founding Engineer Opportunity

a4assist • San Francisco Bay Area

Visa Sponsorship

This Job is No Longer Active This position is no longer accepting applications

AI Summary

Join a fast-growing San Francisco-based consumer tech company as a Senior Full-Stack Engineer to build and launch a web platform from scratch. You’ll own the end-to-end web stack, establish technical standards, and collaborate with backend teams to create scalable, high-quality consumer experiences. Ideal for founders, early hires, or engineers with 0→1 product launch experience.

Key Highlights

High-ownership, 0→1 opportunity to build a consumer web product from the ground up

Establish React/TypeScript standards and frontend architecture for a fast-moving startup

$200K–$400K base salary + competitive equity with on-site work in San Francisco

Open to visa transfers (OPT/H-1B) and requires 5+ years of full-stack experience

Key Responsibilities

Build and launch a consumer web product from the ground up, establishing the full web platform

Own the end-to-end web stack and frontend architecture, setting React/TypeScript standards and best practices

Translate Figma designs into pixel-perfect, responsive production experiences with polished animations and micro-interactions

Collaborate with backend engineers on API design, data models, and performance optimization

Develop and maintain internal tools and dashboards to support product and engineering needs

Searching for Development & Programming roles that provide visa sponsorship? Connect with international employers through Development & Programming Jobs with Visa Sponsorship opportunities actively seeking talented professionals.

Technical Skills Required

React TypeScript Full-Stack Web Engineering

Benefits & Perks

$200K–$400K base salary + equity

On-site work in San Francisco

Open to visa transfers (OPT/H-1B)

Explore our comprehensive directory of visa sponsorship jobs from employers worldwide who are ready to sponsor talented international professionals.

Nice to Have

Consumer gaming experience

Payments or real-money product experience

Real-time application experience

React Native experience

Job Description

🚀 Senior Fullstack Software Engineer | San Francisco, CA | $200K–$400K + Equity

We’re hiring a Senior Fullstack Software Engineer to help build the web platform for a fast-growing consumer technology company in San Francisco.

This is a high-ownership, 0→1 opportunity. You’ll establish the web platform, set React/TypeScript standards, and bring an existing consumer mobile product to the web.

What you’ll do

• Build and launch a consumer web product from the ground up

• Own the end-to-end web stack and frontend architecture

• Establish React and TypeScript standards and best practices

• Build polished, responsive interfaces with thoughtful motion and micro-interactions

Want the full job description? Read the complete details on LinkedIn, the original posting.

Continue on LinkedIn

This is a short excerpt. All rights to the full description belong to its original publisher.