Lead Security Engineer, Identity

Squarespace is hiring a Lead Security Engineer, Identity to join our fully remote team in the United States. As a Lead Security Engineer, Identity, you'll design, build, and ship reliable software that scales to millions of users. This is a contract, work-from-home role open to candidates across the US (Remote — USA). About the role You'll design, build, and ship reliable software that scales to millions of users, partnering with a friendly, distributed team across US time zones. We care about outcomes over hours and give you the autonomy, tools, and support to do your best work from home. What you'll do: • Review pull requests and mentor teammates • Develop, test, and maintain features across the stack • Collaborate with product and design on new initiatives • Write clean, well-tested, and documented code • Improve performance, reliability, and developer experience What we offer: • Home office and wellness stipends • Flexible working hours across US time zones • Generous paid time off and company holidays • Paid parental leave • Comprehensive medical, dental, and vision coverage How we work We're remote-first and async-friendly. Expect clear documentation, regular feedback, supportive teammates, and real opportunities to grow your career. Squarespace is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for everyone.

Minimum qualifications: • 7+ years of experience, including leading teams or projects • US work authorization • Solid understanding of data structures, APIs, and databases • Strong communication in a remote, async environment • Proficiency in one or more modern languages (TypeScript, Go, Python, or Java) Nice to have: • A growth mindset and eagerness to keep learning • Experience working in a fully remote or distributed team