OtterBase · 5 hours ago
Front End Ecommerce Developer - CMS (Optimizely / BigCommerce)
OtterBase is seeking a Front End Ecommerce Developer to build, maintain, and optimize user experiences across CMS-driven ecommerce platforms. The role focuses on front-end development within Optimizely CMS and BigCommerce, collaborating with marketing, design, and backend teams to deliver high-performing, accessible user experiences.
Responsibilities
Build and maintain front-end features within CMS-based ecommerce platforms, primarily Optimizely and secondarily BigCommerce
Develop responsive, accessible, and cross-browser user interfaces using HTML, CSS, and JavaScript
Work within platform constraints including templates, components, and content models
Improve page speed and Core Web Vitals (LCP, CLS, INP/FID) across ecommerce pages
Diagnose and resolve front-end bugs, rendering issues, and UX regressions
Ensure site stability and reliability on high-traffic ecommerce sites
Implement A/B tests and experiments using Convert
Support CRO initiatives through JavaScript-based experimentation and DOM manipulation
Troubleshoot experiment conflicts and validate test accuracy in production
Partner with marketing, CRO, and design teams on UI and UX improvements
Collaborate with backend developers to integrate APIs and dynamic content
Support deployments, releases, and time-sensitive production updates
Maintain clean, readable, and maintainable front-end code
Follow best practices for version control, QA, documentation, and code reviews
Participate in release planning and production support
Qualification
Required
3+ years of front-end development experience on ecommerce sites
Hands-on experience working within CMS-driven platforms (Optimizely, BigCommerce, or similar)
Strong proficiency in HTML, CSS, and JavaScript
Experience supporting A/B testing or experimentation through JS-based tools
Experience improving site performance and Core Web Vitals
Strong debugging and problem-solving skills
Preferred
Experience with CMS platforms such as Sitecore, AEM, Drupal, Shopify, Magento, or similar
Familiarity with CRO or experimentation tools (Convert, VWO, AB Tasty, Adobe Target, etc.)
Accessibility experience (WCAG / ADA)
Experience working on high-traffic, revenue-driving ecommerce sites