Senior Software Engineer, Communications Platform

Squarespace is looking for a Senior Frontend Engineer to join the Communications Platform team within the Building Blocks Platform Engineering group. The Communications Platform powers customer engagement across Squarespace, offering internal teams a scalable, reliable, and secure infrastructure for sending communications via email, push notifications, and in-product messaging. The team also owns the end-to-end Forms and Form Submissions experience, enabling customers to create, manage, and respond to forms across their websites.

As a Senior Frontend Engineer, you'll play a key role in shaping both the user experience and the underlying platform that supports these critical capabilities. You'll collaborate closely with product managers, designers, and backend engineers to deliver thoughtful and performant user interfaces and frontend platform tooling.

You will report to our Engineering Manager and this is a hybrid role out of our NYC office.

• Design and build new product features for our Forms and Notifications platforms
• Own and evolve shared frontend infrastructure and component libraries used across Communications products
• Collaborate with designers and product managers to craft intuitive and accessible UIs
• Lead architectural decisions and mentor other engineers on frontend best practices
• Keep our stack current by evaluating and integrating modern frontend technologies
• Write high-quality, maintainable code with strong test coverage and participate in code reviews
• Help define and uphold frontend engineering standards across the organization

• 6+ years of frontend development experience, with at least 2+ years working on frontend platforms or reusable UI infrastructure
• Expertise in JavaScript (ES6+) and experience with React (or similar frameworks like Vue or Angular)
• A strong command of the DOM, HTML5, CSS3, and modern browser APIs
• Experience building and maintaining design systems or reusable component libraries
• Familiarity with testing frameworks like Jest, React Testing Library, or Cypress
• A product mindset — you care about performance, accessibility, usability, and visual polish

• A choice between medical plans with an option for 100% covered premiums
• Fertility and adoption benefits
• Access to supplemental insurance plans for additional coverage
• Headspace mindfulness app subscription
• Global Employee Assistance Program
• Retirement benefits with employer match
• Flexible paid time off
• 20 weeks for parental leave and up to 12 weeks to care for an ill family member
• Pretax commuter benefit
• Education reimbursement
• Employee donation match to community organizations
• 8 Global Employee Resource Groups (ERGs)
• Dog-friendly workplace
• Free lunch and snacks
• Private rooftop
• Hack week twice per year

The base salary for this position will vary based on job-related criteria including relevant skills, experience, and location, among other factors.

In addition to the cash compensation above (which includes base salary and, where applicable for eligible roles, may include on-target commissions or overtime pay), Squarespace employees are eligible to be granted an option to purchase our common stock.

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 1,500 is headquartered in bustling New York City, with offices in Dublin, Ireland, Aveiro, Portugal, and coworking spaces in the UK, Netherlands, and Australia. For more information about our company culture, visit https://www.squarespace.com/about/careers.

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.

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