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Senior Engineer, UI (C#) at Oak Engage. Location: Hybrid, Newcastle or Remote (UK Based). Reports to: Engineering Manager. Type: Full-time. Join Oak Engage – Where Communication Meets Connection. At Oak Engage, we’re on an exciting growth journey—backed by a major investment from NorthEdge to scale our impact and redefine the future of employee engagement. Trusted by some of the UK’s biggest brands, including Aldi, Five Guys, and ITV, we help organisations connect, engage, and empower their people through smarter, more personalised internal communication. With our next stage of expansion underway, we’re building a team of bold, ambitious thinkers ready to make their mark at a high-growth, purpose-driven SaaS company. If you’re looking to shape the future of work and grow alongside a company that’s going places, now’s the time to join Oak.. About the Role. We’re looking for a Senior Front-End Engineer with strong React experience to lead the development of user-facing features across Oak’s platform. You’ll play a key role in translating complex requirements into elegant, performant, and accessible interfaces that delight users and scale with our business.. This role is ideal for someone who enjoys owning front-end architecture decisions, mentoring developers, and collaborating cross-functionally to deliver best-in-class UX.. What You’ll Do. . Lead the design and development of responsive front-end components using React and other Javascript frameworks. . Collaborate with product managers and designers to scope and implement complex UI/UX solutions. . Ensure adherence to accessibility, scalability, and performance best practices. . Contribute to front-end architectural planning and long-term technical strategy. . Mentor junior developers and contribute to a high-quality engineering culture. . Champion clean, maintainable code and drive continuous improvement. . What We’re Looking For. . 5+ years in front-end development, including React and Javascript/Typescript. . Expertise in HTML, CSS, JavaScript, and integration with APIs. . Strong architectural thinking and experience with scalable component-based systems. . Familiarity with agile methodologies, Git, CI/CD, and DevOps practices - exposure  to Azure DevOps is a bonus. . A user-focused mindset with attention to detail and performance. . . Company Location: United Kingdom.