Salary: £27,000 - 40,000 per year Requirements: Strong knowledge of JavaScript, PHP, HTML, and CSS. Familiarity with Bootstrap or other frontend/CSS libraries. Understanding of UI/UX principles. Experience working with APIs/Widgets (JSON, XML) — ideally building and incorporating your own. Experience with a PHP Framework (e.g. Laravel) is desirable. Experience with React or another modern JavaScript framework is desirable. Good knowledge of MySQL is desirable. Evidence of Layout, Design, and Editing experience (e.g. Photoshop, Figma, Illustrator, Portfolio) is desirable. Strong problem-solving and logical thinking skills. Passion for clean, maintainable, and well-structured code. Solid understanding of responsive design and cross-browser compatibility. Enthusiastic about learning and open to developing new skills. Enjoy working with others and being part of a supportive, collaborative team. Responsibilities: Develop new user-facing features and improve existing ones. Design and build reusable components and libraries. Work with team members to integrate APIs. Optimise pages, code, and assets for performance and scalability. Help define technical specifications and share your ideas with the team. Maintain and improve documentation where needed. Ensure usability, accessibility, and SEO best practices are followed. Technologies: Bootstrap CSS Figma Frontend JSON JavaScript Laravel MySQL PHP React XML UX UI Design Backend Fullstack More: At Gemex, we are a multi-award-winning family business leading the fine bridal jewellery manufacturing sector. We pride ourselves on supplying high-quality diamond rings to jewellers across the UK and Europe. As an innovative and growing company, we focus on creative digital development and build engaging, high-performance online experiences. We offer a competitive salary, full-time employment options, hybrid working arrangements starting office-based in London for the first 4 weeks, a workplace pension, a casual dress code, and opportunities for continuous learning and career progression. last updated 12 week of 2026