Frontend Engineer (TypeScript/React) — High-Impact Startup

Zuma Labs; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Zuma Labs is a London-based startup building disruptive trading technology for OTC markets. You will join a founder-led team, delivering front-end features with autonomy and ownership, directly impacting how brokers and customers interact with our tools.

As a senior frontend developer, you will shape the UI architecture, craft reusable components, and collaborate with design, product, and backend teams to ship high-quality software quickly.

Qualifications

• Strong TypeScript and React experience (React 16+).
• Experience with React Testing frameworks like Jest and Enzyme.
• A keen sense of design and desire to build a better mousetrap.
• General understanding of supporting infrastructure: git, microservices, containers, etc.
• Comfortable working with numbers and data, with or without prior trading/finance experience.

Responsibilities

• Build and maintain cutting-edge front-end applications in TypeScript and React.
• Collaborate with product, design, and backend teams to ship features that directly affect users and brokers.
• Work in a fast-paced, high-autonomy startup environment where your decisions matter immediately.
• Solve real-world problems with practical solutions, applying creativity and technical skill.
• Develop reusable components, design systems, and contribute to front-end architecture.
• Identify UI/UX and performance bottlenecks and implement improvements.

Skills

TypeScript

React

Testing (Jest/Enzyme)

Design mindset

Git/Microservices/Containers

Data fluency

Tools

Material UI

WebSockets

CI/CD

End-to-end testing

Job description

Zuma Labs is a London-based startup building disruptive trading technology for OTC markets. You will join a founder-led team, delivering front-end features with autonomy and ownership, directly impacting how brokers and customers interact with our tools.

As a senior frontend developer, you will shape the UI architecture, craft reusable components, and collaborate with design, product, and backend teams to ship high-quality software quickly.