Senior Frontend Engineer, Web3 & SDKs

Circle; San Francisco (CA); On-site; USD 153,000 - 205,000; Full time

Job summary

Circle is seeking an experienced frontend engineer to build world-class Web3 consumer applications and developer tools. You will work with product, design, and engineering to translate user needs into reliable, scalable experiences for developers and end users.

Join a team that values integrity, innovation, and collaboration. You will review code, contribute to frontend architecture, and enhance delivery with automated testing and CI/CD practices.

Qualifications

• 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.

Responsibilities

• Build world-class Web3 consumer applications, web SDKs, and developer tools.
• Create internal tools for Customer Success teams to deliver support.
• Collaborate with Product, Design, and Engineering to translate requirements into scalable experiences.
• Review code and maintain quality across the frontend ecosystem.
• Partner with Product and Design to translate user needs into intuitive features.
• Use automated testing and CI/CD to improve engineering velocity.

Skills

Frontend development

Strong communication

Product judgment

Collaboration

Tools

React

TypeScript

JavaScript

HTML

CSS

Claude/Codex Cursor

Node.js

Job description

Circle is seeking an experienced frontend engineer to build world-class Web3 consumer applications and developer tools. You will work with product, design, and engineering to translate user needs into reliable, scalable experiences for developers and end users.

Join a team that values integrity, innovation, and collaboration. You will review code, contribute to frontend architecture, and enhance delivery with automated testing and CI/CD practices.