Software Engineer, Mobile
Owns development of Kalshi's Flutter-based mobile trading app, building and shipping customer-facing features end-to-end including notifications and biometrics. Requires 5+ years experience with strong Flutter mastery and ownership mindset.
About the job
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.
Skills
Flutter, React Native, Push Notifications, Biometric Authentication, State Management, API Integrations, Application Architecture, React
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