Founding Mobile Engineer

Posted Yesterday
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San Francisco, CA, USA
In-Office
120K-200K Annually
Mid level
Artificial Intelligence • HR Tech • Professional Services
The Role
Build and own the company’s iOS mobile application from the ground up, with Android planned next. Develop mobile UX, integrate authentication, payments, databases, APIs, and existing AI technology, and contribute across the backend when needed. Translate designs into polished production code, ship rapidly, iterate using user feedback and data, and establish mobile engineering practices. Collaborate closely with engineering, product, and design in a fast-paced, in-office startup environment.
Summary Generated by Built In
Founding Mobile Engineer

San Francisco, CA — In Office
Full-Time
$120,000–$200,000/year
0–4 Years of Experience

About the Company

Our client is an early-stage consumer technology company building AI-powered products focused on music learning.

The team is small, fast-moving, and focused on building products that combine artificial intelligence with engaging consumer experiences.

About the Role

Our client is looking for a Founding Mobile Engineer to take ownership of its mobile experience from the ground up.

The current product is iOS-based, with Android planned next. This person will own the mobile codebase and help bring existing AI technology to mobile before moving into the development of a new AI-native learning experience.

This is a product-leaning full-stack role. While the primary focus will be mobile and frontend development, you'll also need to be comfortable working across the backend when required.

The team places a strong emphasis on product thinking, design intuition, speed, and creating polished user experiences.

What You'll Own
  • Build and own the mobile application from the ground up

  • Develop for iOS, with Android planned next

  • Work across core infrastructure including authentication, payments, databases, and APIs

  • Translate product specifications and designs into production code

  • Ship quickly and iterate based on user feedback and usage data

  • Own the mobile UX end to end

  • Help establish mobile engineering practices as the team grows

  • Work closely with engineering, design, and product

What We're Looking For
  • 0–4 years of experience

  • Product-oriented full-stack mobile development experience

  • Experience with React Native, Swift, Kotlin, or similar technologies

  • Experience with Next.js and Tailwind

  • Experience with backend-as-a-service platforms; Supabase is strongly preferred

  • Familiarity with authentication, payments, database design, and APIs

  • Strong product and design intuition

  • Strong first-principles problem solving

  • Ability to work independently and own the mobile product end to end

  • Comfortable working with modern development practices and AI coding tools

  • Strong ability to move quickly from specifications and designs to production

Nice to Have
  • Musical experience or a genuine passion for music

  • Familiarity with music data formats or music transcription

  • Game development or learning-software experience

  • A multidisciplinary background

  • Experience building polished consumer applications

Work Environment
  • In-office role in the San Francisco Bay Area

  • Fast-paced early-stage environment

  • Visa sponsorship available

Compensation & Benefits

Salary: $120,000–$200,000/year

Benefits include:

  • Medical, dental, vision, and life insurance

  • PTO

  • In-office gym

  • Meals and snacks in the office

Skills Required

  • 0-4 years of experience
  • Product-oriented full-stack mobile development experience
  • Experience with React Native, Swift, Kotlin, or similar technologies
  • Experience with Next.js and Tailwind
  • Experience with backend-as-a-service platforms; Supabase strongly preferred
  • Familiarity with authentication, payments, database design, and APIs
  • Strong product and design intuition
  • Strong first-principles problem-solving ability
  • Ability to work independently and own the mobile product end to end
  • Comfort with modern development practices and AI coding tools
  • Ability to move quickly from specifications and designs to production
  • Musical experience or genuine passion for music
  • Familiarity with music data formats or music transcription
  • Game development or learning-software experience
  • Multidisciplinary background
  • Experience building polished consumer applications
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The Company
6 Employees
Year Founded: 2014

What We Do

SourceDirect Talent is a talent advisory and recruiting firm serving seed and early-stage startups. It provides AI-powered recruiting solutions to help customers build go-to-market and engineering teams, alongside global people consulting. Its services cover end-to-end recruitment, immigration, HR, and advisory support, using AI talent agents, sourcing frameworks, and data-driven processes to help growing companies scale hiring and improve recruitment capacity.

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