Senior Frontend Engineer

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.

The Role

As a Senior Frontend Engineer at Simple Machines, you will be at the heart of groundbreaking projects, collaborating closely with both our internal team and our clients. In this hands‑on role you will drive the development of sophisticated, scalable solutions, working with high‑performing engineering teams to deliver user interfaces for products used by data science and ML teams. If you are passionate about solving complex problems and pushing the boundaries of what’s possible, this role offers the perfect platform to make a real impact.

Key Responsibilities

• Design sophisticated user interfaces for business stakeholders to manage a machine‑learning‑based marketing system.
• Implement designs 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.

Hybrid · Full‑time · London, UK

Requirements

• A consultative approach to software development and software engineering.
• Strong experience with frontend development tools including React.js, Redux, Tailwind, and TypeScript.
• Past project experience with large‑scale web services.
• Experience designing user interfaces that cater to 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 with unit and integration testing and test automation for React.
• A passion for and proven background in picking up and adopting new technologies on the fly.

Benefits

You'll work on interesting, high‑impact problems; build modern platforms, not maintain legacy mess; be surrounded by senior engineers who actually know their craft; and have autonomy, influence, and room to grow.

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