Senior Front-End Engineer
Wellthi
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About Us
Wellthi is building a social banking platform to transform the way communities save and use money. We are forming a team to build the next generation of our product and are looking for engineers who care deeply about craft, can move quickly with high quality, and have a demonstrated ability to build robust, scalable fintech experiences.
About The Role
The Senior front-end engineer will be responsible for building and maintaining our mobile applications (iOS and Android) using React Native, with occasional contributions to web applications (React/Next.js) as needed. Our applications deliver an exceptional user experience that sets them apart in the banking industry. This role requires a high level of collaboration with product managers, designers, and back-end developers to ship reliable, secure, and polished customer-facing features.
The role is remote and follows Eastern Standard Time.
Responsibilities
- Build and maintain high-quality React Native features for iOS and Android, from concept through release.
- Partner with Product and Design to translate requirements into clean, maintainable UI architectures and consistent user experiences.
- Implement robust client-side patterns for state management, server-state caching, navigation, and offline/poor-connectivity UX.
- Integrate with backend services using GraphQL and REST where applicable, ensuring reliability and clear error handling.
- Optimize performance for real-world devices (rendering efficiency, memory usage, startup performance, and data-heavy screens).
- Implement and enforce best practices for secure development (secure storage, encryption, authentication flows, and safe handling of PII).
- Write and maintain automated tests (unit/integration; contribute to E2E where applicable).
- Support CI/CD pipelines, release workflows, and App Store/Play Store deployments.
- Contribute to observability and production readiness (crash reporting, logging, performance monitoring, analytics instrumentation).
- Collaborate on reusable components, shared libraries, and internal SDKs where needed.
Qualifications
- 6+ years of software engineering experience, including 4+ years building production React Native apps (iOS and Android).
- Deep expertise with React, React Native, TypeScript, and component/hook architecture in large codebases.
- Strong experience with Redux Toolkit and modern state patterns; strong experience with server-state management and caching using TanStack React Query.
- Strong experience integrating GraphQL APIs and working with GraphQL Code Generator and typed models.
- Proven experience integrating and debugging native modules/components (Swift/Objective-C and/or Kotlin/Java), including diagnosing bridge issues and performance bottlenecks.
- Strong understanding of performance optimization (lists/virtualization, memoization, rendering behavior and animation).
- Solid grasp of secure mobile development practices: encryption, secure storage (e.g., Keychain/Keystore/MMKV), authentication flows (e.g., OAuth/Auth0), and safe handling of PII.
- Strong testing skills using Jest and React Native Testing Library; familiarity with E2E testing (e.g., Detox) is a plus.
- Experience with mobile CI/CD and release processes (code signing, build pipelines, store submissions).
- Demonstrated ability to work in distributed teams and collaborate effectively across product, design, backend, and QA.
- Comfort working in fintech or regulated environments; payments/remittance experience is a strong plus.
Ability to contribute to web front-ends using React and/or Next.js when needed.
JOIN OUR TEAM
Submit your resume and a cover letter outlining your experience and qualifications to dalia@wellthiapp.com. We will carefully review your application and reach out to you as soon as possible.
This job is no longer accepting applications
See open jobs at Wellthi.See open jobs similar to "Senior Front-End Engineer" Techstars.