Senior Platform Engineer

NCC Group; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A security and technology firm is seeking a Senior Platform Engineer to design and maintain high-performance web applications integrated with ServiceNow. The role requires leading frontend development using React and Vite, optimizing performance, and collaborating with cross-functional teams. Ideal candidates have over 5 years of frontend development experience, strong skills in React and Vite, and a deep understanding of web application architecture. The firm offers flexible working and a supportive environment.

Benefits

Flexible working

Financial & Investment

Pension

Life Assurance

Share Save Scheme

Maternity & Paternity leave

Community & Volunteering Programmes

Green Car Scheme

Cycle Scheme

Employee Referral Program

Lifestyle & Wellness

Learning & Development

Diversity & Inclusion

Qualifications

• 5+ years of experience in frontend development, with a focus on React, JavaScript, and TypeScript.
• Strong experience with Vite or other modern build tools like Webpack.
• Proven experience integrating with backend systems and frameworks.
• Excellent problem-solving and communication skills.

Responsibilities

• Lead Frontend Development: Architect and implement frontend solutions using React and Vite.
• ServiceNow Integration: Connect frontend components with ServiceNow APIs.
• UI / UX Implementation: Translate wireframes into responsive interfaces.
• Performance Optimisation: Optimize load times and rendering performance.

Skills

Frontend development

React

JavaScript

TypeScript

Vite

shadcn / radix-UI

UI design patterns

Accessibility standards (WCAG)

Responsive design

Problem-solving

Tools

AWS

Azure

Docker

Job description

Senior Platform Engineer

Manchester, Cheltenham or London

We are looking for a Senior Platform Engineer to design, build, and maintain modern, high-performance web applications integrated with the ServiceNow platform. You will lead the frontend development of applications using React, Vite, and components based off shadcn / radix‑UI, ensuring seamless integration with backend ServiceNow workflows and APIs.

This is a hands‑on technical role where you’ll collaborate closely with UX designers, ServiceNow engineers, and product stakeholders to create intuitive and scalable user interfaces that drive operational efficiency and excellent user experiences.

Summary

• Lead Frontend Development: Architect and implement frontend solutions using React, Vite, and shadcn / radix‑UI, ensuring performance, accessibility, and maintainability.
• ServiceNow Integration: Work with ServiceNow developers to connect frontend components with ServiceNow APIs, data models, and workflows (e.g., via REST, GraphQL, or Service Portal integrations).
• UI / UX Implementation: Collaborate with design teams to translate wireframes and mock‑ups into responsive, production‑ready interfaces with pixel‑perfect precision.
• Performance Optimisation: Optimize load times, rendering performance, and frontend build pipelines using Vite and modern React features (Suspense, server components, etc.).
• Component Design System: Develop and maintain a consistent UI component library based on custom and shadcn / radix‑UI components and Tailwind v4, ensuring a cohesive design language across applications.
• Code Quality & Best Practices: Write clean, testable code following modern JavaScript, TypeScript and React patterns. Participate in code reviews, testing, and continuous integration.
• Collaboration & Mentorship: Work closely with cross‑functional teams and mentor junior developers to improve overall frontend engineering practices.

Required Qualifications

• 5+ years of experience in frontend development, with a focus on React, JavaScript and TypeScript.
• Strong experience with Vite (or other modern build tools like Webpack, Rollup, or Parcel).
• Experience with shadcn / radix‑UI, Tailwind v4, and modern UI design patterns.
• Proven experience integrating with backend systems and frameworks.
• Deep understanding of web application architecture, state management, (cached) querying (Redux, RTK etc.) and API consumption patterns.
• Familiarity with accessibility standards (WCAG) and responsive design principles.
• Excellent problem-solving and communication skills.

Nice to Have

• Experience with backend architecture
• Knowledge of backend systems, cloud services (AWS, Azure), or micro‑frontend architectures.
• Familiarity with ServiceNow, ServiceNow UI builder and Now Experience.
• Background in DevOps practices (CI / CD, Docker, testing automation).

Ways of Working

• Focusing on Clients and Customers.
• Working as One NCC.
• Always Learning.
• Being Inclusive and Respectful.
• Delivering Brilliantly.

About the Company

At NCC Group, our mission is to create a more secure digital future. That mission underpins everything we do, from our work with our incredible clients to groundbreaking research shaping our industry. Our teams partner with clients across a multitude of industries, delving into, securing new products, and emerging technologies, as well as solving complex security problems. As global leaders in cyber and escrow, NCC Group is a people‑powered business seeking the next group of brilliant minds to join our ranks.

Our colleagues are our greatest asset, and NCC Group is committed to providing an inclusive and supportive work environment that fosters creativity, collaboration, authenticity, and accountability. We want colleagues to put down roots at NCC Group, and we offer a comprehensive benefits package, as well as opportunities for learning and development and career growth. We believe our people are at their brilliant best when they feel bolstered in all aspects of their well‑being, and we offer wellness programs and flexible working arrangements to provide that vital support.

Come join us?

What do we offer in return?

We have a high‑performance culture which is balanced evenly with world‑class well‑being initiatives and benefits:

• ⏰Flexible working
• 💸 Financial & Investment
• Pension
• Life Assurance
• Share Save Scheme
• Maternity & Paternity leave
• 🙋🏾Community & Volunteering Programmes
• ⚡ Green Car Scheme
• 🚴 Cycle Scheme
• 🧑🏻🤝🧑🏻 Employee Referral Program
• 🧘🏻 Lifestyle & Wellness
• 🎓 Learning & Development
• 👨🏿🦽 Diversity & Inclusion

So, what’s next?