Software Engineer, Mobile

Kalshi•New York City, NY

About The Position

Kalshi is defining a new category Kalshi has defined a new category: prediction markets. Kalshi allows people to trade on the outcome of any events and turn any question about the future into a financial asset. Kalshi fought for years and legalized prediction markets in the US for the first time in history, is currently the fastest growing financial market in America, and has thousands of markets across politics, economics, financials, weather, tech, AI, culture and more. We believe prediction markets have the potential to be the largest financial market because they turn anything into a financial position. Our vision: well… build the largest financial market on the planet. Our mission: bring more truth to the world through the power of markets. Our culture is simple: we hire really talented people, work really hard, and enjoy the climb. We are looking for ambitious and exceptional people to join our (relatively small) team to help us build the next generation of financial markets. Role Roadmap We’re looking for a highly execution-oriented Mobile Engineer to own and scale Kalshi’s mobile application experience. This role is responsible for building the core trading and user-facing platform on mobile, with clear ownership over feature delivery, performance, and long-term technical direction. You’ll be a primary operator on our mobile stack — designing, building, shipping, and owning production-grade mobile features end to end. As Kalshi scales, this role will grow in scope and impact, with increasing influence over architecture, reliability, and team development. Success in this role comes from strong technical judgment, comfort owning complex systems, and a bias toward shipping high-quality user experiences quickly

Requirements

5+ years of industry experience building customer-facing software
Strong mastery of Flutter and experience shipping production-grade mobile applications
Hands-on experience with core mobile features such as push notifications, biometric authentication, and device-level integrations
Strong technical fundamentals in application architecture, state management, and API-driven systems
Ability to own work end to end, from design and implementation through testing and deployment
Comfort operating in a fast-paced, scaling environment with evolving requirements
Strong collaboration skills and a product-oriented mindset
A bias toward execution, code quality, and delivering exceptional user experiences

Nice To Haves

Experience with React or React Native

Responsibilities

Own the development and evolution of Kalshi’s mobile application, with responsibility for quality, performance, and user experience
Design, build, test, and ship customer-facing mobile features end to end
Build and maintain a production-grade mobile application using Flutter, including core platform features like notifications and biometric authentication
Collaborate closely with product and design partners to translate business and user needs into thoughtful technical solutions
Architect user interfaces, manage application state, and integrate cleanly with backend APIs
Make and execute on software architecture decisions that support long-term scalability and reliability
Operate with a strong sense of ownership over deployment, maintenance, and ongoing improvement of the mobile app
Mentor and support other mobile engineers as the team grows, helping establish strong engineering practices and standards

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