Job Description
As part of the Site Reliability Engineering (SRE) team, the Page Performance Engineer is responsible
for improving frontend performance across our eCommerce platform by optimizing Core Web Vitals,
identifying performance bottlenecks, and driving performance best practices across engineering
teams.
Key Responsibilities
• Analyze and improve website performance using Core Web Vitals (LCP, INP, CLS).
• Investigate rendering, JavaScript, network, caching, image, and browser performance issues.
• Perform audits using Lighthouse, Chrome DevTools, WebPageTest, PageSpeed Insights, CrUX, and
RUM tools.
• Partner with React.js and Next.js teams to optimize rendering, bundle size, code splitting, caching,
and asset delivery.
• Benchmark performance against leading eCommerce websites and recommend industry best
practices.
• Define performance standards, monitor regressions, and establish performance governance.
• Collaborate with SRE, Product, UX, SEO, Architecture, and Engineering teams to embed
performance into the SDLC.
• Present actionable recommendations and mentor teams on frontend performance best practices.
We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.
Required Skills & Experience
Hybrid onsite 3 days per week
8+ years of frontend engineering experience with 3+ years in web performance optimization.
• Expertise in React.js, Next.js, JavaScript/TypeScript, HTML5, and CSS3.
• Strong understanding of browser rendering, Core Web Vitals, networking, caching, CDN
optimization, and HTTP protocols.
• Experience with Lighthouse, Chrome DevTools, WebPageTest, PageSpeed Insights, CrUX, RUM,
mPulse, or Dynatrace.
• Excellent analytical, troubleshooting, collaboration, and communication skills.
Success Measures
• Improve Core Web Vitals across key customer journeys.
• Reduce page load time, JavaScript execution time, and performance regressions.
• Increase Lighthouse scores and establish engineering performance standards.
Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.