Software Engineer, Mobile

• Our vision: well… build the largest financial market on the planet.

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

What You'll Do

• 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

What You Bring

• 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

Bonus:

• Experience with React or React Native

NYC Pay Transparency Disclosure

Base Salary Range: $180,000–$250,000
This range reflects current market data for this role. Kalshi has minimal hierarchy and broad variance in experience levels within each title; if your compensation expectations exceed this range, we encourage you to reach out — we’re always happy to discuss.