Web Developer – Optimization (12 months FTC)

About Us At Sitecore, our mission is to simplify how brands reach, engage, and serve people by delivering intelligent, personalised digital experiences that connect the world. We empower the world’s most iconic brands to build lifelong relationships with their customers—seamlessly, smartly, and at scale. As the leading provider of agentic digital experience software, Sitecore brings together content, commerce, and data into one composable platform that enables brands to deliver millions of meaningful, adaptive experiences every day. Trusted by global leaders such as American Express, Porsche, Starbucks, and L’Oréal, Sitecore helps brands transform engagement through experiences that are not only personalised but predictive and dynamic. Our foundation is our people—a diverse, passionate, and collaborative global team spanning over 25 countries. We believe that every experience matters, and that belief starts with how we work together. Our values guide how we lead, innovate, and connect. They are the behaviours that bring our mission and vision to life, every day, in every interaction. As we continue to evolve, we are actively cultivating AI skills across our teams to unlock new levels of creativity, efficiency, and insight. From engineering to customer experience, AI capabilities are becoming integral to how we design, build, and deliver the next generation of digital experiences. Learn more at Sitecore.com . The Role We are seeking a Web Developer focused on optimization and experimentation. You will be a member of the development team while working cross-functionally with marketing, content, analytics, and design to continuously improve user journeys and site performance. This role is centered on identifying opportunities, testing improvements, validating results, and reporting impact. You will help improve engagement, usability, and performance across our digital properties. What you’ll do Optimization and experimentation Identify friction points and improvement opportunities across key user journeys. Develop and implement A/B and multivariate tests. Partner with analytics to define hypotheses, success metrics, and measurement frameworks. Validate results and translate findings into actionable recommendations. Iterate based on data insights and user behavior. User journey improvement Evaluate end-to-end page journeys to improve clarity and usability. Collaborate with content and design teams to refine messaging and layouts. Continuously test and improve conversion paths and engagement touchpoints. Advocate for user-centered improvements supported by data. Front-end implementation Build and modify front-end components in Next.js and React to support experimentation. Ensure all experiments follow performance and accessibility best practices. Maintain clean, maintainable code. Sitecore platform contribution Develop working expertise in the Sitecore platform. Create, configure, and update pages using existing components. Stage pages for review, incorporate stakeholder feedback, and publish updates independently. Support large migration efforts and coordinated site updates. Assist with content authoring and help unblock the broader team during priority initiatives. Reporting and impact measurement Document experiments, results, and learnings. Report on key performance metrics and business impact. Share insights with stakeholders across marketing and development. Help establish a structured experimentation and optimization roadmap. What you bring 2 to 4 or more years of Web development experience. Experience with React, Next.js, and Typescript. Familiarity with A/B testing tools and experimentation platforms. Strong analytical mindset and ability to interpret performance data. Understanding of user experience principles and digital best practices. Experience collaborating cross-functionally. Strong communication skills. Why join Sitecore? At Sitecore, you’ll help define how a global SaaS leader presents itself to the world. Your work will directly influence brand perception, product storytelling, and revenue generation. We offer a collaborative, innovative environment where creativity and technical excellence are equally valued—along with competitive compensation, flexible work options, and opportunities for professional growth. Ready to build experiences that convert, inspire, and perform? We’d love to hear from you.