> Markdown version of [/jobs/ext/2257890-ux-ui-designer-developer](https://www.wearedevelopers.com/jobs/ext/2257890-ux-ui-designer-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # UX/UI Designer Developer - **Company:** Onyx-Conseil - **Location:** London, UK - **Contract:** Temporary contract - **Skills:** Contentful, HTML, Digital Content, Web Development, Google Analytics, Web Analytics, Web Platforms, Google Tag Manager, Data Analytics, Hubspot - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815158569-uxui-designer-developer ## About the Role * Proven experience delivering multi format digital content within a CMS environment (Contentful) * Proven experience delivering content-heavy platform targeted at consumer audiences. * Proficiency in integrated performance reports using different data sources including analytics and CRM tools i.e. Google Analytics and HubSpot. * Fundamental understanding of basic adtech i.e. UTM tagging and tracking and setting up of media tags via Google Tag Manager.Take initiative with a solution-oriented approach, within a cross functional team. * Basic understanding of HTML and CSS - or keen to upskill in this area * Strong collaboration skills to help manage input from stakeholders and 3rd parties * Ability to manage and support different projects simultaneously * Possess good knowledge of digital marketing and multi-channel campaigns * Ability to understand website analytics and help drive data-driven conclusions (i.e. Google Analytics) * Ability to recommend decisions underpinned and driven by data. * A passion for UX and all things customer first. ## Description UX/UI Designer and Developer * Manage our external web development and technology partners, to ensure organic growth and conversion opportunities are maximized. * Project management will include collecting requirements from the business, briefing our partners, prioritising asks in line with key business objectives and aligning with timeline of the business. * Deliver high-quality, user-friendly, content across our digital platforms. * Own the delivery of the US and UJ for new / ongoing event website and app related launches. * Identify content improvements with the objective of enhancing engagement, gaining insights, and increasing sales. * Produce and automate top-level website reports to influence decision-making for improvements including user flow Sankey diagrams, channel specific user journeys and holistic business reporting. * Develop a UX and UI workflow in alignment with feedback and research to execution, specifically running CRO tests to prove hypotheses. * Expertise in CMS optimisation (VWO, Optimisely or other). * Expertise in SEO, CRO, accessibility and UX best practices. * Proven experience delivering multi format digital content within a CMS environment (Contentful) * Proven experience delivering content-heavy platform targeted at consumer audiences. * Proficiency in integrated performance reports using different data sources including analytics and CRM tools i.e. Google Analytics and HubSpot. * Fundamental understanding of basic adtech i.e. UTM tagging and tracking and setting up of media tags via Google Tag Manager.Take initiative with a solution-oriented approach, within a cross functional team. * Basic understanding of HTML and CSS - or keen to upskill in this area * Strong collaboration skills to help manage input from stakeholders and 3rd parties * Ability to manage and support different projects simultaneously * Possess good knowledge of digital marketing and multi-channel campaigns * Ability to understand website analytics and help drive data-driven conclusions (i.e. Google Analytics) * Ability to recommend decisions underpinned and driven by data. * A passion for UX and all things customer first. This is a 3 month contract assignment in Shoreditch London on-site. 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