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Senior Backend Engineer, Domains

Squarespace

Hybrid — Aveiro · Aveiro, PortugalListed todayPosted by the employer Jan 22, 2026Listing ends Dec 28, 2026

Compensation: Unconfirmed
Location: Aveiro, Portugal
HybridMore hybrid jobs: Portugal
Employment: Full-time
Category: Engineering

Role skills

java kotlin software engineering technical leadership

Apply on squarespace.comExternal application — you finish on the employer's site.

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About the job

3 min read6 sections

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.
Collaborate Cross-Functionally: Work closely with Product, Design, Analytics, and Operations to understand user needs and translate them into elegant technical solutions.
Advocate for Excellence: Improve the existing codebase by promoting disciplined software engineering practices, including automated testing, thorough code reviews, and high-quality documentation.
Optimize Performance: Refine the performance of our applications and distributed databases to ensure a seamless customer experience.

Who We're Looking For

Technical Proficiency: You have 7+ years of experience developing production-level systems using Java, Kotlin , or similar Object-Oriented languages.
Data-Fluent: You have 5+ years of experience working with relational databases (e.g., PostgreSQL, CockroachDB ) and a deep understanding of data structures and software design patterns.
Craft-Oriented: You have a sincere commitment to writing "beautiful," readable code and a proactive approach to technical documentation.
Product-Minded: You have a strong sense of ownership and curiosity about "the why" behind the features you build.
Qualified: You hold a BS or MS in Computer Science (or equivalent industry experience).

What you can expect from us

Provide opportunities that align with your interests, career growth, and the growth of the company
Create an inclusive environment that's psychologically safe and encourages learning
Work with you to build a personalized career growth plan with clear expectations and milestones

Benefits & Perks

Health insurance with 100% covered premiums for you, your spouse or partner, and dependent children, including medical, dental, and vision
Life and Disability Insurance
Pension benefits with employer match
Fertility and adoption benefits
Headspace mindfulness app subscription
Global Employee Assistance Program
Statutory paid time off and all statutory leaves, as required
Meal Allowance and Flex Benefits Account
Employee donation match to community organisations
In the easily accessible city centre of Aveiro
7 Global Employee Resource Groups (ERGs)

About Squarespace

Squarespace is a design-driven platform helping entrepreneurs build brands and businesses online. We empower millions of customers in more than 200 countries and territories with all the tools they need to create an online presence, build an audience, monetize, and scale their business. Our suite of products range from websites, domains, ecommerce, and marketing tools, as well as tools for scheduling with Acuity and creating and managing social media presence with Bio Sites and Unfold. Our team of more than 1,700 is headquartered in New York City, with offices in Dublin, Ireland, and Aveiro, Portugal. For more information about our company, visit https://www.squarespace.com/about/careers .

Our Commitment

Today, more than a million people around the globe use Squarespace to share different perspectives and experiences with the world. Not only do we embrace and celebrate the diversity of our customers, but we also work toward the same in our employees. At Squarespace, we are committed to equal employment opportunity regardless of race, color, ethnicity, ancestry, religion, national origin, gender, sex, gender identity or expression, sexual orientation, age, citizenship, marital or parental status, disability, veteran status, or other class protected by applicable law. We are proud to be an equal opportunity workplace.

#LI-Hybrid Thank you in advance for providing the following details about your work history from your resume! This helps us ensure that your candidate information is accurate and consistent during the hiring process.

Squarespace will never solicit your personal banking information or ask you to transfer money in connection with a job offer or interview. We also will not reach out to you via phone or SMS without your permission or knowledge.

If you plan to use AI in any capacity during your candidate journey, please review our Candidate AI Policy .

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About Squarespace

Squarespace, Inc. is an American website building, hosting, and domain registration company based in New York City. It provides software as a service for websit…Based on Wikipedia · CC BY-SA 4.0