Senior Backend Engineer, Domains

Squarespace·Aveiro·Posted 22 January 2026

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About the role

The Squarespace Domains & Applications group is looking for a Backend Engineer to join one of our Domains Teams . As the foundation of a customer's digital presence, our domain products are critical to Squarespace’s mission. Our team is currently focused on architecting new products and expanding the feature set for one of the largest domain registrars in the world. In this role, you will focus on high-scale architecture, performance, and long-term scalability, contributing to the end-to-end development of components that power millions of digital identities. You will report to the Engineering Team Manager in Aveiro, Portugal , working in a hybrid capacity (minimum of 3 days per week in-office). You'll Get To… Ship Scalable Code: Help scale our services to meet the demands of a global product, ensuring our platform remains "rock solid" as we grow. Own the Lifecycle: Actively participate in the end-to-end development of multiple components, from initial architecture to production monitoring. Lead & Grow: Take ownership of well-scoped backend projects with guidance from senior engineers, providing a clear path for your professional growth into senior technical leadership.…

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