Senior Full-Stack Software Engineer

a4assist • San Francisco Bay Area

Visa Sponsorship

This Job is No Longer Active This position is no longer accepting applications

AI Summary

Senior Full-Stack Software Engineer to own the end-to-end web stack for a high-growth consumer technology startup. Establish architecture, standards, and best practices for web and future Android applications. Requires 5+ years of experience with React, TypeScript, and JavaScript in a high-ownership environment.

Key Highlights

Own the end-to-end web stack and establish technical foundation for future web and Android applications

Build and launch the web version of a rapidly growing consumer application within 3-6 months

Competitive base salary of $200,000–$400,000 plus equity in a profitable, fast-growing startup

Key Responsibilities

Build and launch the web version of a rapidly growing consumer application within approximately 3–6 months

Establish the architecture, standards, and best practices for the company’s web platform

Own the full development lifecycle across frontend, backend integrations, testing, deployment, and performance

Define engineering standards for React and potentially contribute to React Native applications

Build and improve internal tools and dashboards that help teams operate efficiently and make data-informed decisions

Partner with backend engineers to design APIs, data models, and scalable system integrations

Create responsive, polished user experiences featuring thoughtful motion and micro-interactions

Identify technical and product problems independently and drive solutions from concept through launch

Help establish the foundation for future web and Android products

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Technical Skills Required

React TypeScript JavaScript

Benefits & Perks

Base salary of $200,000–$400,000

Competitive equity

Visa transfer support (H-1B and OPT)

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Nice to Have

Experience with React Native or mobile application development

Experience building consumer marketplaces, gaming products, fintech platforms, or transaction-heavy applications

Experience establishing web infrastructure or engineering standards from the ground up

A strong eye for design, animation, motion, and user interaction

Previous experience at a fast-growing startup

Job Description

Senior Full-Stack Software Engineer

📍 San Francisco, CA — On-site, 5 days per week

💰 $200,000–$400,000 base salary + competitive equity

💼 Full-time

🛂 Open to eligible visa transfers, including H-1B and OPT

About the Opportunity

We’re hiring a Senior Full-Stack Software Engineer to join a fast-growing, profitable consumer technology startup operating at the intersection of technology, entertainment, culture, and real-money experiences.

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