Senior Frontend Developer (React & TypeScript)

Plaato; Hove; On-site; GBP 80,000 - 100,000; Full time

Job summary

A technology company in Hove is seeking a Senior Frontend Developer with over 5 years of experience in building modern web applications. The ideal candidate will have expertise in React and TypeScript, and be comfortable working in a collaborative, fast-paced environment. This role entails building complex UI systems, optimizing performance, and leveraging AI tools to enhance development efficiency. Competitive salary and equity offered, along with opportunities for impactful work on real-time systems.

Benefits

Competitive salary

Equity ownership

AI-assisted development tools

Qualifications

• 5+ years of professional experience building modern web applications.
• Expertise in React and TypeScript, including testing and performance.
• Strong understanding of state management with tools like Redux.

Responsibilities

• Build and maintain complex UI systems in React and TypeScript.
• Optimize rendering and state updates for responsiveness.
• Collaborate with product and design teams to define features.

Skills

React

TypeScript

State management

AI tools experience

Tools

GitHub Copilot

Jest

Cypress

Job description

About Plaato

At PLAATO, we build industrial AI systems primarily for breweries, but also for wider beverage and liquid production, turning real-time production data into actionable insights that improve quality, reduce costs, and increase throughput at scale.

About the Role

We are looking for a Senior Frontend Developer who is deeply experienced with React, TypeScript, and modern frontend architecture. You will own major parts of our user interface, working on a system with multiple interactive components, live updates from the backend, and high complexity.

This role is perfect for someone who wants to build sophisticated, real-time interfaces, enjoys solving tricky architectural challenges, and is excited about using AI tools and workflows to accelerate development, improve quality, and move fast.

You will work closely with product, design, and backend engineering to deliver a seamless, scalable, and highly performant frontend experience.

What You’ll Do

Frontend Architecture & Development

• Build and maintain complex UI systems in React + TypeScript.
• Architect component patterns, state management, and data flows that scale.
• Ensure multiple components communicate clearly, accurately, and efficiently.
• Implement real-time updates and live data feeds from backend services.

System Reliability & Performance

• Optimise rendering, state updates, and component lifecycles for speed and responsiveness.
• Ensure robustness across a wide range of devices and browsers.
• Own performance diagnostics, monitoring, and improvement.

Collaboration & Product Delivery

• Work closely with Product, Design, and Backend Engineering to define and deliver features.
• Translate complex product requirements into intuitive, polished UI.
• Participate in code reviews, design reviews, and architectural planning.

AI-Accelerated Development

• Use AI tools (GitHub Copilot, ChatGPT, code assistants) to move faster and increase code quality.
• Identify opportunities to integrate AI into the product or internal workflows.
• Drive experimentation with new AI tooling and best practices.

What You Bring (Must-Haves)

• 5+ years of professional experience building modern web applications.
• Expertise in React and TypeScript (hooks, context, patterns, testing, performance).
• Experience designing or contributing to complex, multi-component frontend architectures.
• Comfort working with real-time updates, websockets, or frequently changing backend data.
• Strong understanding of state management (Redux, Zustand, Recoil, Jotai, or similar).
• Ability to write clean, maintainable, scalable code.
• Strong attention to detail with a product-focused mindset.
• Comfortable working in a fast-moving, collaborative environment.

Nice-to-Haves

• Demonstrated experience using AI tools in day-to-day development (coding, refactoring, documentation, testing).
• Experience with data visualisation libraries or dashboards.
• Familiarity with popular frameworks/protocols (we use TailwindCSS, REST, websockets, NextJS).
• Experience with automated testing (Vitest, Jest, Cypress).
• Experience with performance profiling and optimisation at scale.

What We Offer

• Competitive salary based on location and experience.
• Ownership in the company (equity).
• The opportunity to work on a complex, real-time system with meaningful technical challenges.
• A modern development workflow including AI-assisted tooling.
• A collaborative, high-trust engineering culture.
• Ability to shape architecture and influence the future of the product.