Senior Frontend Engineer — Web3 & AI-Assisted Tools

Circle; Salt Lake City (UT); Hybrid; USD 153,000 - 205,000; Full time

Job summary

Circle is seeking a frontend engineer to build world-class Web3 consumer applications and developer tools. You will craft responsive, component-based interfaces with React and TypeScript, develop web SDKs, and collaborate with product, design, and engineering to deliver scalable features for developers and end users.

You will also create internal tools for Customer Success to improve support efficiency. You will participate in code reviews, uphold coding standards, and leverage AI-assisted

Qualifications

• 4+ years of experience building user interfaces for complex web applications.
• 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 ability 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.

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.

Skills

Frontend development

HTML/CSS/JS/TS

React

AI-assisted development tools

Testing & quality coding

Collaboration

Communication

Distributed teams

Tools

Node.js

SDKs

Web3/Blockchain

Job description

Circle is seeking a frontend engineer to build world-class Web3 consumer applications and developer tools. You will craft responsive, component-based interfaces with React and TypeScript, develop web SDKs, and collaborate with product, design, and engineering to deliver scalable features for developers and end users.

You will also create internal tools for Customer Success to improve support efficiency. You will participate in code reviews, uphold coding standards, and leverage AI-assisted