Full Stack JavaScript/TypeScript Engineer

SUMMARY: We are looking for a Mid-Senior Full Stack JavaScript/TypeScript Engineer to join a Commercial Engineering team working on business-critical digital publishing and advertising platforms. This is a long-term opportunity within a complex, high-traffic production environment, combining ongoing platform enhancement, modernisation and migration work. The role is technically full stack, with an approximate 70/30 frontend-to-backend split, although the frontend work is focused on browser-level engineering rather than traditional UI or React component development. WHAT WILL YOU BE DOING: As part of an agile software development team, you will: - Develop and maintain software using JavaScript, TypeScript and Node.js. - Working directly with vanilla JavaScript, the DOM and browser APIs. - Building and maintaining plugin and configuration systems. - Working with third-party script integrations across commercial and advertising platforms. - Contributing to browser-level functionality, including DOM manipulation, scheduling and brokers. - Working with analytics and consent management (CMP) integrations. - Contributing to the ongoing development and modernisation of high-traffic production platforms. - Supporting a mixture of BAU enhancements, platform evolution and migration work. - Working within existing CI/CD, containerised and Kubernetes-based environments. - Collaborating with an experienced engineering team to solve technical problems and deliver reliable, maintainable solutions. - Taking ownership of problems and using initiative to identify and implement effective solutions. WHAT WE ARE LOOKING FOR: - Strong commercial experience with JavaScript and TypeScript. - Strong hands-on experience with Node.js. - Proven experience working with vanilla JavaScript. - Strong familiarity with the DOM, browser APIs and the inner workings of modern browsers. - Strong software engineering fundamentals. - Experience developing and supporting software in production environments. - Comfortable working with CI/CD and containers. - Familiarity with working in a Kubernetes environment. - Strong problem-solving skills and the ability to use initiative. - Comfortable working across both frontend and backend areas of a system. - Ability to work effectively within an established engineering team and complex production environment. - Strong focus on code quality, maintainability and engineering best practices. - Strong verbal and written communication skills in English NICE TO HAVE: - Experience with CSS and browser layout. - Previous experience within digital publishing, advertising technology or high-traffic web platforms. - Experience with third-party script integrations. - Exposure to analytics platforms. - Experience with Consent Management Platforms (CMPs). - Experience contributing to platform modernisation or migration projects. - Good use of LLM/AI tooling as part of the software development workflow. WHAT’S IN IT FOR YOU? - Be part of our collegial environment where responsibility and authority are shared equally amongst colleagues and help create our company culture. - A culture in which we don’t criticise failure but ensure we learn from our mistakes - An Agile environment where your ideas are welcome - The possibility to grow and experience different projects - Ongoing Training & Mentoring - The possibility of travelling

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