Co-Founder Opportunity – App Development Startup

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Co-Founder Opportunity – App Development Startup

Location: Stockholm / Remote

Type: Equity-based

Start: ASAP

We’re launching a new app development venture, and we’re looking for ambitious co-founders to join us from day one.

This is not a typical job. It’s a founding role for someone who wants to build something real, take ownership, and grow with a driven team. Whether your strengths are in engineering or marketing, you’ll be shaping the product, the business, and the path to success.

About Us

We’re a team of students about to graduate, with several years of experience building mobile apps. Our previous apps have generate 30M million downloads, all built while studying and running a business part-time. Now we’re going all in and we’re looking for others ready to do the same.

Whom We’re Looking For

We’re open to different profiles. You might be:

• A CS student or recent graduate with strong app dev experience

• A self-taught developer who’s launched your projects

• A marketing student with a talent for growth and content

• Or someone with high energy, curiosity, and the ability to execute

What matters most is your drive, initiative, and ability to build.

Available Roles

CTO / Engineering Co-Founder

Preferred Skills (one or more):

• Android (Kotlin + Jetpack Compose)

• Kotlin Multiplatform

• iOS (Swift + SwiftUI)

• Backend systems using Supabase (SQL, Node.js)

Responsibilities:

• Lead technical development and architecture

• Make key tech decisions and set best practices

• Ensure app performance, quality, and scalability

CMO / Marketing Co-Founder

Preferred Skills:

• Creating TikTok/Instagram Reels for user acquisition

• App Store Optimization (Google Play / App Store)

• Analyzing acquisition and engagement data

• Designing marketing assets (Figma experience is a plus)

Responsibilities:

• Lead marketing campaigns from idea to execution

• Optimize user acquisition through ASO and creative growth

• Collaborate with product and design to drive engagement

What We Offer

• Real experience: You’ll help build a product from scratch

• Knowledge sharing: Learn directly from founders that generated 30M+ mobile downloads

• Equity: You’ll earn a meaningful share, based on contribution

• Autonomy: Full ownership of your area, with space to experiment and grow