Senior Front-End Developer

Seeking Alpha is looking for a Senior Front-End Developer with a focus on mobile experience to join their community of engaged investors. This role involves using React and TypeScript to build features for iOS and Android apps, working closely with the native mobile team. The focus is on crafting mobile-optimized UI, performance, and delivering a seamless experience for paid users accessing exclusive content and advanced investment tools. The company prioritizes employee growth and offers a flexible, balanced, fully remote work environment.

Must Have

• Develop mobile-focused features for React application inside iOS/Android apps
• Build and maintain JavaScript-to-native bridge communication
• Ensure backward compatibility across released mobile app versions
• Collaborate with native mobile development team to design and implement new bridge APIs and navigation patterns
• Participate in product design and planning discussions, contributing architecture ideas for mobile-specific user experiences
• Optimize application performance, meeting Web Vitals requirements
• Write highly scalable, reusable code with TypeScript and Tailwind CSS
• 4+ years of hands-on React experience
• 5+ years of front-end development experience building complex, high-load applications
• Strong TypeScript proficiency
• Experience with Tailwind CSS and TanStack Query (React Query)
• Deep understanding of mobile-first responsive design and cross-browser compatibility
• Knowledge of browser internals: JavaScript engines, DOM APIs, event handling, and performance optimization techniques
• Comfortable with Git and familiar with Agile principles
• Ability to break down complex requirements into actionable tasks
• Strong sense of ownership and a "get things done" mindset
• Impact-driven approach with focus on user and business outcomes
• Upper-Intermediate English is a must

Good to Have

• Experience with React applications running in WebView contexts (iOS WKWebView, Android WebView)
• Experience with React Native
• Experience with browser extensions
• Understanding of JavaScript-to-native bridge patterns and mobile app integration
• Experience debugging WebViews using Safari Web Inspector or Chrome DevTools
• Experience with refactoring large-scale features while maintaining backward compatibility
• Experience working in a UNIX environment

Perks & Benefits

• Flexible, balanced environment
• Remote work options
• Ongoing learning and career advancement opportunities

Description

Join a Company That Invests in You

We’re the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We’re Looking For

We are looking for a Senior Front-End Developer with a focus on mobile experience. You'll use React and TypeScript to build features for our iOS and Android apps, working closely with the native mobile team. This is a React role where your focus will be on crafting mobile-optimized UI, performance, and delivering a seamless experience for our paid users as they access exclusive content and advanced investment tools.

This is a fully remote role, offering the flexibility to work from home.

What You'll Do

• Develop mobile-focused features for our React application that runs inside iOS/Android apps
• Build and maintain JavaScript-to-native bridge communication
• Ensure backward compatibility across released mobile app versions
• Collaborate with the native mobile development team to design and implement new bridge APIs and navigation patterns
• Participate in product design and planning discussions, contributing architecture ideas for mobile-specific user experiences
• Optimize application performance, meeting Web Vitals requirements
• Write highly scalable, reusable code with TypeScript and Tailwind CSS

Requirements

• 4+ years of hands-on React experience
• 5+ years of front-end development experience building complex, high-load applications
• Strong TypeScript proficiency
• Experience with Tailwind CSS and TanStack Query (React Query)
• Deep understanding of mobile-first responsive design and cross-browser compatibility
• Knowledge of browser internals: JavaScript engines, DOM APIs, event handling, and performance optimization techniques
• Comfortable with Git and familiar with Agile principles
• Ability to break down complex requirements into actionable tasks
• Strong sense of ownership and a "get things done" mindset
• Impact-driven approach with focus on user and business outcomes
• Upper-Intermediate English is a must

Nice to have

• Experience with React applications running in WebView contexts (iOS WKWebView, Android WebView)
• Experience with React Native
• Experience with browser extensions
• Understanding of JavaScript-to-native bridge patterns and mobile app integration
• Experience debugging WebViews using Safari Web Inspector or Chrome DevTools
• Experience with refactoring large-scale features while maintaining backward compatibility
• Experience working in a UNIX environment