Demo

Technical Co-Founder

Charlie's Toolbox
Brooklyn, NY Part Time
POSTED ON 8/5/2025 CLOSED ON 9/3/2025

What are the responsibilities and job description for the Technical Co-Founder position at Charlie's Toolbox?

The Opportunity

This is an opportunity to be a true co-founder and strategic partner, not just an employee. You will lead the development of our flagship product: a revolutionary AI-powered mobile app called Idunno.

We have already built a strong foundation:

  • A podcast with 180,000 downloads that serves as our primary marketing channel.
  • A social media following of 45,000 engaged users.
  • A paid community, The Toolkit, with 20 paying members that provides invaluable product feedback and generates immediate revenue.

Your mission is to bring the Idunno app to life. You will be responsible for building the technology that turns a feeling of "I don't know" into clarity and a well-designed life.

About Charlie's Toolbox

Charlie's Toolbox is a brand ecosystem designed to provide the cultural and practical tools for women to build a sovereign, self-led life. Our mission is to empower our audience with sophisticated, actionable technology that helps them navigate personal finance, wellness, and life design with elegance and intelligence. The app's name, Idunno, speaks directly to the problem we solve, while the brand promises a comprehensive solution.

Your Core Responsibilities
  • Serve as the lead architect and developer for the Idunno mobile app (iOS and Android).
  • Collaborate directly with the CEO to define the product roadmap, prioritize features, and make strategic technical decisions.
  • Lead the development of our core AI engine, which will connect data across app modules to provide unique, cross-contextual insights that support a self-led life.
  • Manage the full technology stack, including front-end, back-end, database management, and API integrations.
  • Actively build and write clean, scalable code in the early stages, setting the technical standard for the company.
  • Help build and mentor a world-class engineering team as the company grows.
Required Skills & Experience
  • Demonstrated experience in mobile app development (Swift/Kotlin, React Native, or similar frameworks).
  • A strong background in AI/ML model development or experience working with relevant APIs.
  • Proven ability to work autonomously and manage a full technology stack.
  • Experience with cloud services (AWS, Google Cloud, Azure) and database management.
  • A minimum of 5-7 years of professional experience in software development.
Compensation

This is an equity-only co-founder position. Compensation will consist of a substantial percentage of equity ownership in the company. This is a high-risk, high-reward opportunity for a partner who believes in the company’s long-term vision and is willing to trade an initial salary for a significant stake in a multi-million-dollar brand.

Work Environment

This is a fully remote position.

How to ApplyIf you are a builder looking to change the world with an elegant, intelligent, and impactful brand, we'd love to hear from you. Please send a brief note about yourself and why you're interested to charlie@charliestoolbox.com. Include a link to your portfolio or GitHub profile.
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