Senior Mobile Developer (React Native)

Stealth Startup; San Francisco (CA); On-site; USD 180,000 - 230,000; Full time

Benefits offered by this job

Equity

In-office in San Francisco

Collaborative culture

Job summary

Stealth Startup in San Francisco is seeking a Senior iOS Engineer to lead the design, development, and deployment of our flagship mobile app built with React Native. You will collaborate with product, design, backend, and AI teams to ship features, define the architecture, and mentor junior engineers.

This in-person role offers a competitive salary and meaningful equity in a fast-growing startup. Join a lean, collaborative team that moves quickly from concept to production in a dynamic

Qualifications

• 5–7+ years of professional mobile development experience.
• Deep expertise in React Native and TypeScript/Node.js.
• Strong knowledge of iOS tooling (Xcode, provisioning, TestFlight).
• Experience integrating with REST APIs and backend services.
• Focus on performance, offline-first design, and polished UI/UX.

Responsibilities

• Lead the design, development, and deployment of our iOS app built with React Native.
• Build high-performance mobile experiences and collaborate with design, product, backend, and AI teams.
• Define architecture and technical roadmap for the iOS app as we scale.
• Own critical features end-to-end from prototype to production.
• Mentor engineers and promote engineering best practices.

Skills

Mobile development

React Native

TypeScript

Team mentorship

Performance optimization

Tools

Xcode

TestFlight

Expo Framework

GitHub Actions

Job description

Location: San Francisco, CA (In-Office, 4-5 Days/Week)

Type: Full-time

Experience Level: Senior (5+ years), Lead/Staff (7+ years)

Start Date: ASAP

About Us

We’re building GOLD, the next-generation super shopping app — a powerful, intuitive AI shopping agent designed to streamline how people discover and buy products online. Our mission is to help people get the best deals on the products they love, through a seamless and delightful shopping experience. Early launches have shown that users love the experience, and the company is entering growth mode to bring this experience into more hands.

We’re an early-stage startup based in San Francisco, led by the founder of GoogleX, Waymo and Udacity. Our team is lean, driven, and highly collaborative. If you're excited about building impactful technology from the ground up — and working shoulder-to-shoulder with an experienced founder — we’d love to meet you.

What You’ll Do

• Lead the design, development, and deployment of our flagship iOS app built with React Native
• Build and maintain high-performance and scalable mobile experiences Collaborate closely with design, product, backend engineering and AI research teams to ship shopping features
• Define the architecture and technical roadmap for the iOS app as we scale
• Own critical product features end-to-end, from prototype to production
• Help set and promote mobile engineering best practices, code quality, and performance standards
• Provide mentorship and technical guidance to other engineers as we grow the team

What We’re Looking For

• 5-7+ years of professional mobile development experience, with proven expertise shipping consumer-facing apps
• Deep expertise in React Native and strong experience with TypeScript/Node.js
• Solid understanding of iOS-specific tooling (Xcode, provisioning, TestFlight) and deployment processes
• Experience integrating with REST APIs
• Strong grasp of mobile performance optimization, offline-first design, and UI/UX best practices
• Comfortable working across the stack with backend engineers when needed
• Bonus: experience with e-commerce or high-traffic consumer apps
• Bonus: past experience leading teams or mentoring other developers
• Bonus: previous experience with Expo Framework

Our Tech Stack

• Mobile App: React Native, TypeScript
• Backend: TypeScript (Node.js) and Python
• Infrastructure: Google Cloud Platform
• CI/CD: GitHub Actions, TestFlight, EAS

Why Join Us

• Make an impact – Your work will be foundational to the product and user experience
• In-person collaboration – Join a focused, fast-moving team working together daily in San Francisco
• Proven leadership – Work directly with a founder who has built transformative technology companies Startup ownership – Influence product and engineering decisions from day one Compensation & equity – Well-funded startup with competitive salary, meaningful equity