Senior Frontend Developer

Prism Digital; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

Prism Digital in London is seeking a senior front-end engineer who writes robust React code and owns major parts of the front-end architecture. You will work on portal and mobile ordering products, shaping the design system, and collaborating with product and backend teams.

Through a 3-day on-site probation, you’ll demonstrate hands-on leadership while mentoring one or two developers. The role offers autonomy with flexible post-probation arrangement and a focus on performance, testing, CI/CD,

Qualifications

• Senior front-end engineer with hands-on React expertise.
• Experience building component-driven front-end architectures.
• Ability to mentor one or two developers.
• Strong technical decision-making under pressure.

Responsibilities

• Develop portal and mobile ordering products.
• Contribute to the design system and shared component library.
• Implement payment flows and real-time data integrations.
• Support automated testing, CI/CD, and performance monitoring.

Skills

React

Senior front-end experience

Component-driven front-end

Mentoring one or two developers

Strong technical decision-making under

Tools

TypeScript

React Native

Node.js

Express

MongoDB

PostgreSQL

Job description

• Location: London, hybrid. 3 days on site through probation, then more flexible.

Non-Negotiables

• React
• Senior front-end experience, still hands-on in the code
• Component-driven front-end architecture
• Mentoring one or two developers (formal people-management experience not required, but welcomed)
• Strong technical decision-making under pressure

What You'll Work With

• Portal and mobile ordering products
• Design system and shared component library
• Payment flows and real-time data integrations
• Automated testing, CI/CD, and performance monitoring

Nice to Haves

• TypeScript
• React Native for mobile apps
• Node.js, Express, MongoDB, or PostgreSQL
• Background in payments, event tech, hospitality, or retail
• Coming from a competitor or a similar POS / payments platform

Why Join

You own the front end outright: the architecture, the design system, the standards the code is written to. The business is scaling, so what you ship now shapes the product for years, and you see it in the field the moment the gates open.

The management load is light. You'll mentor one or two developers, no more, so this is a chance to grow into technical leadership without stepping away from building. A strong senior who is almost there suits this better than someone who already runs a large team.

It suits someone who wants autonomy and accountability over process. If you need heavy structure and long sign-off chains, this isn't the seat.