Senior Software Engineer

About Toptal:

Get ready to:

• Work in a small team shipping mobile features continuously.
• Take ownership of React Native implementation from ticket to production.
• Collaborate closely with backend engineers to deliver end-to-end user flows.
• Ship fast, fix fast, and improve based on real usage.

What you’ll do:

• Build and ship React Native apps using Expo for iOS and Android.
• Implement core user flows: onboarding, authentication, payments, balances, and settings.
• Integrate backend APIs efficiently and handle loading, error, and retry states correctly.
• Focus on performance and reliability under real-world conditions (poor connectivity, retries, edge cases).
• Own releases: builds, OTA updates, store submissions, and production fixes.
• Keep the codebase clean, maintainable, and easy to extend as the product evolves.

What we’re looking for:

• 4+ years building production mobile apps, with strong React Native experience.
• Hands-on experience with Expo (managed or bare), including builds and releases.
• Strong TypeScript skills and comfort working with API-driven products.
• Solid understanding of mobile app performance, navigation, and lifecycle.
• Experience shipping frequently in fast-moving product teams.
• Fintech or payments experience is a plus, but execution matters more than domain.

How you work (values we expect):

• Execution-first - you ship working software, not just ideas.
• Ownership - you see features through from implementation to production.
• Product-aware - you understand how users interact with what you build.
• Speed with discipline - you move fast without breaking trust.
• AI-assisted - you use tools like Cursor/Claude Code/etc. to move faster.

Bonus points if you have…

• Shipped fintech, payments, or crypto-related mobile apps.
• Experience with mobile security (secure storage, biometrics).
• Built flows involving KYC, document capture, or real-time balances.
• Worked on early-stage products where speed mattered.

What we offer:

• Clear ownership and real responsibility from day one.
• Fast execution with minimal process overhead.
• Direct impact on a global financial product.
• A senior team that values shipping, quality, and learning.