Senior Frontend Engineer

🏢 About Weekday Partner Network

Weekday is a Y Combinator-backed talent ecosystem that matches premier technology companies with vetted engineering talent. Through the Weekday Partner Network, high-growth startups and venture-funded product teams hire senior software engineers to solve critical architectural challenges.

🎯 The Role

As a Senior Frontend Engineer, you will join an engineering team building next-generation payments infrastructure. This position is designed for an autonomous engineer who thrives when standard patterns are insufficient, taking complete ownership of mission-critical web and mobile interfaces that scale seamlessly with product adoption.

🛠️ Tech Stack

• React, TypeScript, JavaScript
• React Native, Expo
• Modern CSS, Tailwind CSS
• Vite, Webpack, Component Testing

💼 What You'll Do

• Spearhead end-to-end development of robust frontend architectures across web, mobile, and integration surfaces.
• Tackle intricate frontend performance, state management, and edge-case rendering issues with clean, maintainable code.
• Work in tight loops with backend architects and product designers to turn complex transaction workflows into frictionless user journeys.
• Raise the technical bar across the codebase by instituting clean interface contracts and reusability standards.

✅ What You'll Need

• 5 to 8 years of specialized software engineering experience focusing on frontend platforms.
• Deep mastery of React, TypeScript, and modern browser APIs.
• Hands-on production experience building cross-platform mobile apps with React Native and Expo.
• Proven track record of independently breaking down ambiguous requirements and shipping reliable systems.

🌟 Nice to Have

• Prior experience working within fintech, payments gateways, or financial checkout ecosystems.
• Experience designing and scaling design systems across dual web and mobile client codebases.