Senior Front-end Engineer (React + .NET/Back-end Exposure)

Experience and Skills • Senior level experience with 5+ years of professional software engineering experience. • 3+ years of production React experience, including deep proficiency in hooks, functional components, and state management. • Strong command of TypeScript and ES6+. • Working experience with .NET (C#) for backend development, including building or maintaining APIs, and comfortable reading or writing backend code. • Proven track record of optimizing frontend performance, including bundle size, render cycles, and lazy loading. • Experience with testing frameworks such as Jest and React Testing Library. • Solid understanding of RESTful APIs and asynchronous JavaScript patterns. • C1 English level or higher. Skills • React • TypeScript • .NET • RESTful APIs • Jest • React Testing Library • ES6+ • testing • Solid • JavaScript

Key Responsibilities • Architect and build complex React components and feature modules with minimal guidance. • Optimize application performance through code splitting, memoization, and efficient state management. • Review code and mentor mid-level developers on React best practices. • Collaborate with backend engineers to design API contracts and data flows, engaging directly in discussions to unblock integration issues. • Contribute to or troubleshoot backend .NET code when needed, particularly around API endpoints consumed by the frontend. • Diagnose and resolve production issues across various browsers and devices, as well as issues that span the frontend and backend boundary. • Maintain high test coverage and documentation standards on both frontend and backend-adjacent work.

Nice to Have • Entity Framework Core • Fintech