Squarespace is looking for a Senior Frontend Engineer (with some experience in fullstack engineering) to join the Media Platform team within our Building Blocks Platform Engineering organization. The Media Platform powers how media assetsimages, videos, audio, files, & fonts are uploaded, processed, stored, & delivered across all Squarespace products. This team's mission is to deliver a scalable, performant, reliable, & secure media experience for internal developers & end users alike.

As a Senior Software Engineer on the Media Platform team, you will shape the architecture & evolution of this critical layer, in collaboration with product & infrastructure teams. This is a unique opportunity to work with infrastructure & product teams to drive performance improvements that directly impact user experience.

You will report to the Engineering Manager of Media Platform in our NYC office. This is a hybrid work opportunity with three days in the office.

You'll Get To...

• Lead frontend development across media-serving interfaces & tools using React, JavaScript, CSS, & HTML.
• Integrate media APIs & optimize asset pipelines, especially around image, video, & font rendering.
• Improve rendering performance across customer-facing surfaces, applying best practices for lazy loading, progressive rendering, responsive design, & CDN-based optimization strategies.
• Work with designers, infra engineers, & product teams to build performant, user-friendly media workflows.
• Contribute to long-term architectural decisions, including media caching strategies, compression techniques, & CDN configurations.
• Provide mentorship, conduct code reviews, & shape frontend & performance standards for the team.

Who We're Looking For

• 6+ years of professional experience in frontend development in Javascript with 2+ years of experience in backend development in any language.
• Proficiency with React, JavaScript, HTML, & CSS, including modern frontend tooling (Webpack, Babel, ESLint).
• Experience with web performance techniques, including rendering path optimizations, critical CSS, TTI, LCP, CLS, & other Core Web Vitals.
• Prior experience improving media-related performance (e.g., optimizing large images, video streaming, font delivery, CDN strategies).
• Experience working with or building internal tooling for media workflows, such as uploaders, preview tools, media transformation pipelines.

Benefits & Perks

• A choice between medical plans with an option for 100% covered premiums
• Fertility & 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 & 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 & snacks
• Private rooftop
• Hack week twice per year

Cash Compensation Range: $153,500 - $247,250 USD

The base salary for this position will vary based on job-related criteria including relevant skills, experience, & 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.

About Squarespace

Squarespace is a design-driven platform helping entrepreneurs build brands & businesses online. We empower millions of customers in more than 200 countries & territories with all the tools they need to create an online presence, build an audience, monetize, & scale their business. Our suite of products range from websites, domains, ecommerce, & marketing tools, as well as tools for scheduling with Acuity & creating & managing social media presence with Bio Sites & Unfold. Our team of more than 1,500 is headquartered in bustling New York City, with offices in Dublin, Ireland, Aveiro, Portugal, & coworking spaces in the UK, Netherlands, & Australia. For more information about our company culture, visit https://www.squarespace.com/about/careers.

Our Commitment

Today, more than a million people around the globe use Squarespace to share different perspectives & experiences with the world. Not only do we embrace & 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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