Senior Frontend Engineer

Hybrid · Full-time · London, UK About Simple Machines Simple Machines is a leading independent boutique technology firm with a global footprint across London, Sydney, New Zealand and Poland. We operate at the intersection of data, AI, machine learning, data engineering, and software engineering—building bespoke platforms and products that turn complex data into real-world outcomes. We work with enterprises, technology companies, and governments to help them better understand their organisations, customers, and citizens. Our teams design and build large-scale data platforms, intelligent systems, and high-impact software products. We engineer data to life™. The Role: As a Senior Frontend Engineer at Simple Machines, you’ll be at the heart of groundbreaking projects, collaborating closely with both our talented internal team and forward-thinking clients. In this hands-on role, you'll drive the development of sophisticated, scalable solutions, working with our high-performing engineering teams to deliver user interfaces for products used by data science and ML teams. If you’re passionate about solving complex problems and pushing the boundaries of what’s possible, this role offers the perfect platform for you to make a real impact. Key Responsibilities: Design of sophisticated user interfaces for use by business stakeholders to manage a machine learning based marketing system Implement design as a web application using React Integrate with APis provided by the backend development team Contribute to solution design workshops to advise on implementation approaches Partner with client stakeholders, and team members, to gather business requirements, collaborate on design decisions, and translate them into technical and design requirements. Operate within an iterative delivery team using Agile delivery tools and practices. Skills & Experience A consultative approach to software development and software engineering. Strong experience with frontend development tools including React.js, Redux, Tailwind, Typescript Past project experience with large scale webservices. Previously designed user interfaces that catered for complex business use cases Experience eliciting business requirements and translating them into technical and design requirements Familiarity with various git workflows and ability to tailor them to project needs Experience of unit and integration testing and test automation for React A passion and proven background in picking up and adopting new technologies on the fly. Why Simple Machines You’ll work on interesting, high-impact problems You’ll build modern platforms, not maintain legacy mess You’ll be surrounded by senior engineers who actually know their craft You’ll have autonomy, influence, and room to grow