Senior Front-End Developer

Application Deadline: 12 October 2026 Department: IT Location: London Description As Disturbia continues to grow, we are looking for a Senior Front-End Developer to join our IT & Dev team in London. This is a senior, hands-on role with ownership of the quality, performance and maintainability of our customer-facing Shopify experience. The successful candidate will translate commercial and creative priorities into fast, accessible and engaging storefront experiences; lead theme architecture and front-end engineering standards; and use data, experimentation and sound technical judgement to improve conversion and customer experience. Our e-commerce operation is centred on a multi-store Shopify Plus environment serving multiple international markets. The storefronts integrate with marketing, analytics, review, customer service, logistics and mobile-app platforms, with additional capabilities delivered through a combination of in-house solutions and carefully selected third-party apps. Key Responsibilities Reporting to the Director of IT, the successful candidate will take technical ownership of front-end delivery across the Shopify Plus ecosystem. They will work closely with e-commerce, creative, marketing and technical colleagues to turn business goals and customer insight into robust, measurable improvements, while setting standards for front-end architecture, code quality, testing and release discipline. The successful candidate will:Own the architecture, development and continuous improvement of Shopify themes across multiple storefronts and international markets. Turn customer insight, commercial priorities and design concepts into high-quality, reusable front-end experiences that improve conversion and customer experience. Lead optimisation of storefront performance, accessibility, responsiveness and Core Web Vitals. Partner with e-commerce, marketing and creative teams to deliver data-informed improvements through experimentation, analytics and CRO initiatives. Establish and maintain front-end engineering standards, component libraries, testing practices and technical documentation. Assess and implement new technologies, integrations and third-party applications that enhance customer experience and business performance.Take ownership of projects from discovery and technical design through implementation, release and post-launch monitoring, working independently with minimal supervision. Proactively identify technical debt, risks and opportunities for innovation, continuously improving both the storefront and development workflows Skills, Knowledge and Expertise Candidates should have substantial hands-on experience delivering production front-end solutions within the Shopify ecosystem. They must be able to demonstrate the following essential skills:Advanced Shopify Liquid development experience within Shopify Plus environments. Strong expertise in modern HTML, CSS and JavaScript, with a deep understanding of browser performance and rendering behaviour. Experience building scalable, reusable front-end components for complex, high-traffic e-commerce websites. The ability to translate design concepts, UX requirements and customer needs into production-ready experiences. Strong knowledge of Git, code review processes, testing practices and modern deployment workflows. Commercial awareness, using analytics, experimentation and performance data to influence technical decisions and drive customer outcomes. Excellent communication skills with the ability to work across both technical and non-technical stakeholders and provide technical leadership. A proactive, self-directed approach with the ability to identify opportunities, solve problems independently and continuously improve platforms, processes and ways of working The following skills are desirable but not essentialWorking with Shopify Storefront, GraphQL or REST APIs and integrating front-end experiences with third-party servicesDeveloping Shopify Functions and UI Extensions using Preact for checkout, customer account and admin extensibilityDeveloping embedded Shopify admin apps using React Router, App Bridge and PolarisDeveloping theme app extensionsBuilding server-side services, automations or edge functionality, including experience with Cloudflare Workers and related technologiesImplementing CRO and experimentation platforms, analytics implementation, feature flags or personalisationDesign systems, component libraries, visual regression testing or end-to-end testing tools Personal qualitiesAnalytical and focused - prioritising improvements that will have the greatest positive impact on the businessStrong initiative - proactively identifying improvements and potential issues earlyCollaborative communicator - working effectively with technical and non‑technical teamsAdaptable - responding well to evolving e‑commerce, technology and Shopify platform changesMotivated - with the ability to work to deadlines, manage workload, and deliver reliablyPrecise - and with an impeccable eye for detail Benefits Competitive Salary, subject to skills and experience, with potential bonus and paid overtimeAnnual leave base starting at 25 days per year (+ bank holidays), ability to accrue holidays with each year’s service and annual leave purchase schemeEnhanced maternity and paternity payPrivate health insuranceEnhanced sickness payFree Parking2 Corporate Social Responsibility days per yearGenerous staff allowance and discountFree fresh fruit, snacks and drinks in officeIndividual social fundBi-Annual Paid team outingsRegular pay reviews Inclusivity is a guiding principle in the culture at Disturbia, whether for our employees, customers or suppliers. We have created an environment where our people feels valued, respected and celebrated for their unique qualities and perspectives.We are committed to prioritising our awareness, constantly learning and growing as we strive to create a more inclusive and empowered future for all we cross paths with. Our commitment to belonging is woven into the fabric of our company values, driving us to always support diversity and inclusivity as we celebrate the magic in everyone.