Senior Design Engineer – Product & Interaction

Senior Design Engineer – Product & Interaction £100k–£130k + equity London | 4 days per week in Shoreditch London office React / TypeScript Neulinx have partnered with a 15-person, Series A London technology company building cutting-edge tools for infinite canvas, creative collaboration and highly interactive digital experiences. Following a $10m Series A, they’re continuing to grow and are now looking for a Senior Design Engineer to play an instrumental role in shaping both their existing products and what they build next. This is not a traditional Product Designer role. They’re looking for a product designer who loves to build – someone with exceptional visual and interaction design instincts who is also comfortable getting into the code and turning ideas into working experiences. You’ll work particularly closely with the CEO and product engineering team, having significant influence over the design direction of the business. The role You’ll take ideas from early concepts through to working prototypes, interaction design and polished production experiences. You’ll: Own design across existing products, SDKs and new product betsWork closely with the CEO to shape product and design directionPrototype and build directly in React and TypeScriptDesign sophisticated, highly interactive user experiencesTake ambiguous ideas and turn them into polished, intuitive productsSweat the details across interaction, motion, typography, layout and responsivenessExplore new interfaces across canvas, creative tooling and AIExperiment with prototypes, demos and ideas to help determine what gets built nextWork directly alongside engineers to take designs through to production What they’re looking for Exceptional product and interaction design skillsA strong portfolio demonstrating high-quality, shipped digital productsExperience designing sophisticated interactive software – rather than purely websites or static interfacesStrong visual eye and attention to detailGood working knowledge of React and TypeScriptStrong HTML/CSS and modern frontend fundamentalsComfortable using code as part of the design and prototyping processExperience collaborating closely with engineersHigh agency and comfortable working through loosely defined problemsSomeone who enjoys experimenting and challenging conventional product patterns Particularly interesting Experience with canvas products, creative tools, spatial interfaces, multiplayer, AI interactions, motion/animation or developer tooling would be a big plus. We’d also love to hear from people who build their own products, side projects or contribute to open-source communities. Benefits Plus 25 days' holiday + bank holidays, private healthcare, pension, income protection, EAP and equipment allowance. This is a rare opportunity for someone who genuinely sits between design and engineering and wants meaningful influence over how a product looks, feels and evolves. Interested? Apply or get in touch with Gareth at Neulinx for a confidential conversation.