(Senior) Full Stack Engineer

Job description

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 & Design systems
• Experience with state management at scale (e.g. React Query, Zustand, Recoil)
• Knowledge of authentication, authorisation, and RBAC concepts
• Experience integrating complex APIs and backend data structures
• Familiarity with containerised deployments and cloud environments

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

05-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English