Senior Software Engineer at Toptal

Western Springs, Auckland Region, New Zealand -

Full Time

Start Date

Immediate

Expiry Date

02 Apr, 26

Salary

0.0

Posted On

02 Jan, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

React Native, Expo, TypeScript, Mobile App Performance, API Integration, Onboarding, Authentication, Payments, User Flows, Fast Execution, Ownership, Product Awareness, Mobile Security, KYC, Document Capture, Real-Time Balances

Industry

Software Development

Description

About Toptal: Toptal is the world’s leading premium talent marketplace, trusted by 30,000+ clients, processing over $5B in payments across 140+ countries. We’re building a borderless finance platform on stablecoin rails, focused on fast, reliable money movement at global scale. This team is shipping the first production version of the product — quickly, iteratively, and with high quality. 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. \n \n

Responsibilities

The Senior Software Engineer will build and ship React Native apps using Expo for both iOS and Android. They will implement core user flows and integrate backend APIs while focusing on performance and reliability.