Senior Software Engineer, Fullstack - Web Performance

Squarespace is looking for a Senior Software Engineer on the Web Performance team within the Foundations Front End Platform Engineering group. You will collaborate with a diverse group of experienced engineers to design our web performance platform. You will help enhance the speed, efficiency, and user experience of our web applications, ensuring that our solutions are scalable, and maintainable.

You'll Get To…

• Lead the development of high performance web solutions.
• Collaborate with teams to identify and address performance bottlenecks and optimize application performance.
• Develop tools and frameworks for performance testing, monitoring, and analysis.
• Support engineers, encouraging a culture of learning and improvement.
• Stay up-to-date with the latest industry trends and best practices in web performance and incorporate them into our platform.
• Contribute to the architectural decisions and technical direction of the web performance platform.
• Participate in code reviews, ensuring adherence to coding standards.
• Troubleshoot and resolve complex technical issues related to web performance.

Who We're Looking For

• 5+ years of experience in software development, with a focus on web performance and optimization.
• Strong proficiency in JavaScript and Typescript.
• In-depth knowledge of web technologies, including HTML, CSS, DOM and modern JavaScript frameworks (e.g., React, Angular, Vue.js).
• Experience with performance profiling, monitoring, and optimization tools (e.g., Lighthouse, WebPageTest).
• Experience with browser internals, HTTP protocols, and performance optimization techniques.
• Experience with observability and RUM (Real User Monitoring) platforms for web optimization, along with familiarity with SRE tools such as Terraform.
• Experience with GCP (Google Cloud Platform) or any other cloud platform is desirable but not required.
• Experience with technologies such as NodeJS, Kubernetes, CI/CD tools (e.g., Puppeteer), BigQuery, and monitoring tools like Grafana.

Benefits & Perks

• 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
• Retirement benefits with employer match
• Flexible paid time off
• 12 to 20 weeks of paid family leave
• Equity plan for all employees
• Pretax commuter benefit
• Education reimbursement
• Employee donation match to community organizations
• 6 Global Employee Resource Groups (ERGs)
• Dog-friendly workplace
• Free lunch and snacks
• Private rooftop

Cash Compensation Range: $128,500 – $231,500 USD

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), all Squarespace employees are eligible to receive equity in the company as part of their total compensation.

About Squarespace

Squarespace (NYSE: SQSP) 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, creating and managing social media presence with Bio Sites and Unfold, and hospitality business management via Tock. Our team of more than 1,700 is headquartered in bustling New York City, with offices in Chicago, Dublin, Ireland, Aveiro, Portugal, and coworking spaces in the UK, Netherlands, and Australia. For more information about our company culture, visit 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.

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