Clerk is building developer tools for user management.  You can think of us as Stripe Checkout for Sign up, Sign in, and Profile management.  A recent demo can be seen here (5m22):
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We're hiring a frontend engineer to lead the development of our dashboard, the modules deployed on our customers' websites, and our NPM packages.  We develop with Typescript and React, but our modules can be deployed in any stack.
Clerk is still a small company.  You'll be joining a team of 5 and working most closely with our lead backend engineer (who is responsible for the apis you'll interface with) and our product designer (who is responsible for the user experience and design).
We are well-funded by founders and early engineers of Stripe, Segment, PagerDuty, and Facebook, and plan to launch before the end of the year.
Please reach out to REDACTED_EMAIL