Senior Software Engineer, Frontend

Circle is an internet financial platform company building digital asset, payment, and programmable blockchain infrastructure. The Senior Software Engineer, Frontend will build Web3 consumer applications, web SDKs, developer tools, and internal tools while contributing to frontend standards and collaborating with Product, Design, and Engineering teams.

Responsibilities:

• Build and maintain responsive Web3 applications using modern frontend technologies
• Develop web SDKs and tools that simplify integration with Circle products and services
• Design reusable, accessible, and scalable frontend components for shared use across products
• Partner with Product and Design to translate user needs into intuitive, high-quality features
• Build internal tools that help Customer Success teams resolve customer needs efficiently
• Participate in code and design reviews to improve quality, consistency, and maintainability
• Use automated testing, continuous delivery practices, and AI-assisted development tools to improve engineering velocity

Requirements:

• 4+ years of experience building user interfaces for complex web applications
• Strong proficiency in HTML, CSS, TypeScript, and JavaScript
• Experience building responsive, component-based applications with React
• Experience using AI-assisted development tools such as Claude, Codex, Cursor, or similar platforms
• Experience writing well-tested, maintainable code and contributing to strong coding standards
• Strong product judgment and the ability to identify opportunities to improve usability and quality
• Experience collaborating with product managers, designers, and distributed engineering teams
• Excellent written and verbal communication skills, with the ability to clearly present technical concepts
• Experience with Node.js, developer platforms, SDKs, Web3 products, or blockchain technologies