As a Senior Frontend Developer (React.js / Next.js), you will:

Architect and build robust, scalable web applications using React.js and Next.js that make our platform easy and enjoyable to use
Own significant features end to end — from technical design through rollout — and set the standards others build against
Drive frontend performance: server-side rendering, static generation, bundle size, Core Web Vitals, and caching strategy
Collaborate with cross-functional teams to design and implement new features that enhance user engagement
Raise the quality bar through code reviews, refactoring, testing practices, and pragmatic technical debt reduction
Mentor mid-level and junior engineers, and help grow the team's overall frontend capability
Stay ahead of emerging technologies and best practices in web development to keep our applications cutting-edge

Requirements

Primary Requirements

5+ years of professional experience building production web applications with JavaScript
5+ years of professional experience with React.js
Hands-on production experience with Next.js, including server-side rendering, static generation, and routing
Deep understanding of React concepts: functional components, hooks, state management, context, memoization, rendering behavior, and lifecycle
Strong command of ES6+, TypeScript, HTML, CSS, and a state management library (Redux or similar)
Proven experience designing and integrating REST-based third-party APIs
Demonstrated ownership of frontend performance optimization, debugging, and browser testing
Experience with modern build tooling (Webpack, Babel, or equivalent) and frontend deployment pipelines
Track record of leading code reviews, refactoring legacy code, and improving engineering standards
Strong problem-solving skills with the ability to analyze, clarify, and scope requirements independently
High attention to detail and strong visualization of UI/UX

Preferred Requirements

Experience using Google Lighthouse and PageSpeed Insights to drive measurable frontend performance gains
Knowledge of SEO best practices for server-rendered web applications
Experience with component libraries, design systems, and monorepo tooling
Familiarity with automated testing (Jest, React Testing Library, Playwright/Cypress)
Experience with feature flagging and progressive rollout practices
Experience working with asynchronous or distributed teams
Prior experience mentoring developers and leading technical initiatives

Soft Skills & Mindset

Clear communication and the confidence to challenge and be challenged
Curious, proactive, and generous with knowledge
Ability to work in a fast-paced, collaborative product environment
Strong desire to build real products that solve real problems

Benefits

At Stadium, your input matters, and we believe in creating a culture where innovation is encouraged. Join us in crafting the future of group gifting and recognition. Your adventure starts here!

Competitive salary based on skill set
Fully remote role - work with talented teammates across the globe
Flexible working hours and autonomy over your schedule
5-day work week for better work-life balance
Team retreats and offsites to connect and recharge
Meal vouchers and employee benefits (health insurance) support
Internal learning tracks to grow into other areas of development
Plenty of company swag and additional perks

Senior Javascript Developer - React