Circle is a global crypto finance company, built on blockchain technology, powered by crypto assets, and dedicated to helping people and institutions create and share value globally. With our suite of products, we enable our customers to send and receive money around the world easily, as well as invest in and trade crypto assets.

Our passion is building tools that allow Circle to help our customers, ensure that we have insight into how the platform is running and anything else that we may think of. As a tools developer at Circle, you'll own entire features from concept to deployment. That means you'll have the freedom to shape the tools as you see fit - from initial specs to API development (in node.js) to frontend development (in react.js) to the release and announcement to the company. There are plenty of opportunities for personal growth and leadership. We're looking for highly motivated individuals who seek a fun, collaborative, iterative and fast-paced environment.

What you’ll work on

• Contribute ideas for our tools, architecture, and implementation
• Collaborate with other teams to help craft elegant solutions to problems
• Develop features on both the frontend (React.js) and backend (node.js) of our tools
• Ensure code is well tested through unit and integration tests
• Leverage new technologies in innovative ways

What you’ll bring to Circle

• Experience building single page web applications using JavaScript frameworks
• Experience building/debugging web applications and tools using a modern web technology (Node.js/React.js)
• Passion for writing beautiful, functional and well-tested code
• A deep passion for cryptocurrency and blockchain technology

Circle was founded in 2013 by internet entrepreneurs Jeremy Allaire and Sean Neville. We’re backed by $250 million from investors including Jim Breyer (Facebook), Goldman Sachs, IDG Capital (Baidu, Tencent), General Catalyst (AirBnB, Snapchat), Accel Partners, and Bitmain, with offices in Boston, New York, San Francisco, Dublin, London and Hong Kong. 

Circle Pay enables customers to send and receive money, across borders and currencies. Circle Invest empowers consumers to buy and sell crypto assets. Circle Trade is one of the world’s top market makers for major crypto coins and offers OTC trading services for institutions and high net worth individuals. Additionally, in 2018 Circle acquired Poloniex and signed an agreement to acquire SeedInvest, both of which enable us to expand our offerings even further. Poloniex is one of the world's leading token marketplaces. SeedInvest is the largest equity crowdfunding platform in the United States, as well as a licensed broker-dealer.

Check us out at circle.com and download Circle Pay & Circle Invest for iOS and Android today.

We are an equal opportunity employer and value diversity at Circle. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.