Senior Mobile Software Engineer

About Común Comun’s mission is to help Hispanic immigrants turn their hard work into upward mobility — starting with financial services that support their transition from a cash-based system to the digital economy. We offer checking accounts that can be opened using 100+ types of Latin American IDs, access to over 90K locations nationwide to deposit cash, international transfers to 17 countries at market-leading rates, and 24/7 bilingual customer support with <5 min SLA across email, chat, and phone. We currently process over $1.5B in annual transaction volume and surpassed $100M in annualized international transfers just six months after launch. Comun has raised +$50M from top investors including Redpoint, Costanoa Ventures, and South Park Commons. Our team brings experience from leading fintech companies like Brex, Nubank, and Mercury. We believe immigrants are the ultimate entrepreneurs — driven by relentless ambition and a vision for a better future for their families. Comun exists to serve them throughout their journey. Learn more at comun.app/nosotros Article here About the Role Own the mobile experience that powers our unique banking platform. You’ll help shape the product roadmap, turn design files into reality, and keep our component library sharp so we can ship fast without sacrificing quality. Our stack includes React Native, Expo, TypeScript, and GraphQL . What You’ll Do Build and ship new features with product, design, and backend teams. Define frontend patterns, tools, and processes that speed development. Maintain testing and observability to ensure a stable, high-quality app. Evolve our design system and component library for consistency and scale. Partner with leadership on technical planning and architecture. You Are Comfortable leading technical decisions and working independently in a fast-moving startup. Skilled at breaking down ambiguous problems and explaining trade-offs. Experienced debugging complex issues across frontend, API, and mobile layers. Requirements Strong React and TypeScript production experience. React Native and Expo experience. Deep understanding of frontend architecture, state management, testing, and accessibility. Proven ability to ship secure, high-uptime apps (fintech, e-commerce, or similar). Nice to Have Expo experience. Experience publishing and maintaining iOS/Android apps. Familiarity with mobile performance optimization, payments, authentication, or KYC flows. We love domain experts who push the quality bar—and versatile builders who think like founders. Team We are a team of 40 based out of New York, coming from industry-leading companies like Brex, Nubank, Cruise, and Verkada. Over half of us are immigrants, and have experienced the problems we’re solving first hand. We value customer focus, high ambition, principled decision-making, and deep trust. Full Time Employee Benefits Competitive salary and generous equity Medical, dental, and vision insurance Gym Pass subscription Daily office lunch in NYC Office Paid parental leave Flexible PTO Remote-friendly when traveling Company-wide offsites 401(k) for US employees Visit to our NYC Office for remote team members Visa sponsorship if applicable Común is proud to be an equal opportunity employer. We are committed to building a diverse and inclusive culture that celebrates authenticity. We do not discriminate on the basis of race, religion, color, national origin, gender, gender identity, sexual orientation, age, marital status, disability, protected veteran status, or any other legally protected characteristics.