Head of App Development

About the Company4C Software is a prediction markets company connecting some of the largest sports betting market makers and traders in the world. Over the last 12 months, more than $1B has been traded across the platforms we support (4casters & 4cx).We are a small team of fewer than 10 people and have been working in prediction markets since 2017. We value high-agency, hungry builders who combine strong fundamentals with modern AI tools. The company is profitable and on pace for $2M–$3M in revenue this year.We currently have a web app built in Vue, with backend routes, APIs, and core infrastructure already in place. We are now building a dedicated mobile app in React Native and are looking for someone to own the mobile product from its first version through scale.A major part of this role will be helping us make the right technical decisions around speed, maintainability, and long-term app architecture. We have something that works on mobile right now; we would like to leverage that to build something better.This role is for a self-starting builder who uses AI tools effectively, has previously launched a mobile app end-to-end, and wants to own a major product long term. You will be taking an already-profitable, high-volume product and turning it into a polished mobile app experience that can scale.ResponsibilitiesYou will be responsible for:Building the React Native appDeciding how to reuse, improve, or replace parts of the existing Vue web app.Working with existing APIs, backend routes, and real-time data flowsOwning mobile UX for markets, order entry, account flows, positions, and trading featuresMaking key product and technical decisions for the appImproving performance, reliability, and app quality over timeOwning the mobile app as it scalesIdeal BackgroundWe are looking for someone with:React Native experienceExperience building and launching a mobile app end-to-endGood design instincts.Comfort with real-time, user-facing productsExperience using prediction markets, sports betting, trading, fintech, crypto, or exchanges.Vue experience helpful, but not requiredChicago-based or open to relocating preferredCompensationCompensation is $150,000–$200,000 base salary + equity, depending on experience and fit.