Principal React Engineer in Belfast

Join to apply for the Principal React Engineer role at Foods Connected Ltd. Foods Connected is an award-winning cloud-based software platform that helps retailers and food companies across the world manage their supply chain, quality control, and trading and planning management. Our software solutions are currently utilised by 10 of the largest food retailers in the world.

As a team, we provide tools that help our customers manage their processes in a fast and efficient way and provide real-time visibility and reporting on what is happening in their business. At Foods Connected, we recognise that our employees are our most important asset and we value creating a great working environment to ensure our team enjoy coming into the office every day working together and solving problems for our customers.

Whether we are in the middle of a fast and intense development sprint, on a Teams call discussing our project statuses or enjoying a game of ping-pong or pool in the office, it is important to us that our employees are happy and delivering the best possible result for our customers. We’re always keen to welcome talented individuals to join our expanding team. So if you’re driven, with a passion for developing simple software solutions, creating great user experiences, designing scalable solutions for real business challenges and ensuring customer happiness then we’re looking for you!

• Front End Development Architecture (80%)
  • Collaborate on front end product architecture for building robust distributed systems.
  • Provide input on technical feasibility of UI/UX designs, optimize application for maximum speed, scalability, and accessibility.
  • Implement outlined information architecture & interaction design ensuring alignment with back-end specifications for complex software applications and systems.
  • Confer with business analysts, data scientists, or project managers to obtain information on limitations or capabilities.
  • Serve as a contributing team member, participating in software development lifecycle and regularly communicating status to Head of Engineering or Development Director.
  • Develop new user-facing features and build reusable code and libraries for future use.
  • Building and maintaining internal design system.
  • Write clean, test-driven code that adheres to standards, practices, and conventions.
  • Test features to ensure the program can be used easily, quickly, and accurately.
  • Update, repair, modify, and develop existing software and generic applications.
• Product Analysis and Customer Support (15%)
  • Collaborates with Customer Support and Implementation teams to resolve issues and bugs identified in testing and production support.
  • Consults with customers or other departments on project status, proposals, or technical issues.
  • Supports innovation through trend analysis, identifying new opportunities, developing novel ideas and/or participation in idea generation activities to improve company processes, services, or products.

• Bachelor’s degree in computer science, computer engineering, or a related field, and 5+ years’ relevant experience.
• At least one major skill outside of programming such as monitoring, performance optimization, documentation, integration, testing, or visual design.

To perform this job successfully, the Principal React Engineer should have experience with:

• React 18+ & TypeScript: Advanced hooks, strict typing, generics, composition patterns, performance optimization.
• TanStack Ecosystem: Query v5 (server state, caching), Router v1 (file-based routing, type-safe navigation), Table (data grids), Virtual (list virtualization).
• Nx Workspace: Task orchestration, affected commands, custom generators, caching.
• Testing: Vitest, Cypress, MSW.
• Storybook 8: Component documentation and visual testing.

• Micro-frontend architecture within Nx monorepo.
• Domain-driven design for business logic.
• API-first development with type-safe contracts.

• Generous Holiday Package – 25 Days + 10 Public Holidays.
• Secure Company Hardware.
• Private Healthcare & Employee Wellness Classes.

Seniority level: Mid-Senior level

Employment type: Full-time

Industries: Software Development

Belfast, Northern Ireland, United Kingdom