Mid-Level React Engineer, eCommerce

Job Description

• Building modern web experiences using React, powered extensively by Sitecore CMS
• Delivering fast, accessible, mobile-first UI that is authorable, resilient to real-world content variation, and built with strong automated test coverage
• Build React UI components integrated with Sitecore CMS (authorable, reusable, resilient
• Implement mobile-first responsive UI and ensure strong accessibility (WCAG-minded
• Optimize performance and stability (

Core Web Vitals:

LCP/CLS/INP

• Integrate with APIs and handle loading/error/empty states clean
• Support controlled rollouts and A/B testing / experimentation in a clean, performance-safe way (Optimizely experience is a plus)
• Own quality end-to-end through automated testing and the right level of code coverage
• Use modern AI-assisted development tools responsibly to improve productivity, code quality, and developer velocity 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.

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https://insightglobal.com/workforce-privacy-policy/. Skills and Requirements

• 4+ years of experience building production‑grade web applications using React, TypeScript, HTML, and CSS
• Experience developing e‑commerce solutions with a strong mobile‑first mindset
• Hands‑on experience with headless or hybrid CMS platforms such as Sitecore, Contentful, or similar technologies
• Proven ability to consume headless services and compose services to support scalable front‑end experiences
• Advanced proficiency in unit and integration testing, using frameworks such as Jest, React Testing Library, Cucumber, or comparable tools
• Strong testing discipline in environments where code is deployed directly from development to production
• Demonstrated commitment to delivering robust, reliable code with comprehensive automated test coverage
• Experience building cloud‑native applications on Azure, AWS, or GCP
• Bachelor's degree in Computer Science or equivalent professional experience
• Prior experience working with Sitecore, including content‑driven and headless implementations
• Hands‑on experience with Optimizely, particularly for experimentation, personalization, or conversion optimization
• Experience using Datadog or comparable APM/observability tools to monitor application performance and reliability
• Demonstrated ability to responsibly leverage modern AI‑assisted development tools to improve productivity, code quality, and delivery efficiency
• Strong proficiency in Node.js for building scalable, high‑performance backend services
• Proven experience delivering customer‑facing e‑commerce experiences, including product discovery and browsing, search, product detail pages, cart and checkout flows, promotions/discounts, and conversion‑focused UX
• Solid understanding of CDN and edge‑delivery architectures, including caching strategies and their impact on performance and user experience
• Hands‑on experience developing and deploying solutions on Microsoft Azure