Frontend Javascript Developer

Frontend JavaScript Developer (UI/UX Focus)A Bit About UsWe are a high-growth construction technology company developing integrated hardware and software systems that automate key processes on infrastructure construction sites. Our products are helping modernise the construction industry through digitalisation, automation and intelligent data collection. Our technology improves road construction quality, extends asset life, enhances health and safety, and helps reduce costs in an industry where efficiency matters.Why We're HiringAs we continue to grow across the UK, Ireland and the USA, we are expanding our R&D team to develop the next generation of integrated software and hardware solutions. We're looking for an experienced Frontend JavaScript Developer with a passion for creating intuitive, polished user experiences. While strong technical skills are essential, we're particularly interested in someone who enjoys designing clean, modern interfaces and understands how thoughtful UI and UX can make complex software simple to use. You'll work within a small, collaborative team building web and mobile applications, combining frontend development with product design input. The role offers a mix of office and remote working. What We're Looking For• Strong commercial JavaScript experience. • A Computer Science or similar technical background. • A solid understanding of data structures and algorithms. • Experience developing modern web and mobile applications. • A genuine interest in UI and UX design, with an eye for layout, usability, accessibility and user-centred design. • Confidence using design tools and AI-assisted development workflows. • A GitHub profile or portfolio demonstrating previous work is highly desirable. Core Technical Skills• HTML5, CSS3 and modern JavaScript • React.js with the ability to work in vanilla JavaScript • Node.js and Electron.js • REST APIs, OAuth and data synchronisation • Git and JavaScript testing • Database design and querying • Data modelling • TypeScript (or other strongly typed languages) • Linux command line • Performance optimisation, particularly on constrained hardware such as Raspberry Pi Nice to Have• React Native, Capacitor, Cordova or Ionic • Geospatial technologies including GeoJSON, Leaflet, deck.gl and Turf.js • HTML5 Canvas and WebGL • Native Node.js modules • Open source contributions • AI-assisted coding • Adobe Photoshop or Illustrator, Figma or similar UI design tools Professional Skills• Strong problem-solving and analytical skills • Agile development experience • Able to collaborate across the full technology stack • Comfortable reviewing code and receiving feedback • Excellent communication skills • A willingness to challenge assumptions and champion best practice • A passion for creating software that is both technically robust and enjoyable to use What We Offer• Competitive salary • 25 days holiday plus bank holidays • Company computer • Ongoing professional development and training • Friendly, collaborative working environment • Flexible hybrid working from our Hitchin office • The opportunity to make a significant impact within a fast-growing technology company