(Senior) Full Stack Engineer

As a Senior Full Stack Engineer, you will lead the architecture and development of a complex React + Next.js application that orchestrates long-running jobs, visualises large datasets, and integrates with backend and computational systems. This role is within a fast-growing technology company building scalable, user-facing platforms for data-intensive scientific workflows. The environment is engineering-led, fast-paced, and focused on quality, ownership, and building systems that scale. This Will Offer You Ownership of a core, business-critical frontend application Responsibility for frontend architecture in a complex technical product Close collaboration with product, backend, and data/ML engineering teams Exposure to distributed systems, long-running workflows, and high-volume data Competitive compensation and long-term growth opportunities with potential leadership options A high-autonomy role within a technically rigorous environment Your Responsibilities Own and evolve the React and Next.js application architecture Design and implement scalable UI patterns for complex workflows and data visualisation Define state management strategies for long-running jobs and asynchronous systems Build clean abstractions over backend and remote services Implement authentication, authorisation, and role-based access control Write testable, maintainable frontend code and contribute to testing strategy Work closely with cross-functional teams to shape user workflows and product direction You Will Bring 4+ years of experience building production React applications – React, Next.js, TypeScript Experience deploying and managing applications on AWS using Infrastructure as Code and containerized workflows API Design experience UX/UI