Senior Integration Engineer

Company: McCabe & Barton
Apply for the Senior Integration Engineer
Location: Greater London
Job Description:

We are seeking a Senior Integration Engineer to design and build scalable, enterprise‑grade UI systems using Blazor integrated with .NET APIs. This role focuses on owning the UI and integration layer within a modern microservices architecture, ensuring performance, scalability, and excellent user experience.

You will work across UI architecture, backend integration, and system design—applying clean architecture principles to deliver robust, modular applications for a financial services environment.

Key Responsibilities

  • Build modular, scalable Blazor-based UI systems for enterprise applications
  • Define UI architecture patterns including state management, routing, and component design
  • Work closely with backend teams to integrate .NET APIs and microservices
  • Translate business and design requirements into high‑quality UI solutions
  • Ensure performance, maintainability, accessibility, and responsive design standards
  • Contribute to UI best practices, architecture decisions, and system design
  • Develop integrations with third‑party systems and internal platforms using APIs
  • Support development of web applications using C#, ASP.NET, Razor, and JSON‑based services

Skills & Experience

  • 5+ years’ experience in .NET front‑end development
  • Strong hands‑on experience with Blazor (Server and/or WASM)
  • Solid understanding of component‑based UI architecture and SPA design
  • Experience working with REST APIs and .NET Core (v7+)
  • Strong C# and asynchronous programming skills
  • Experience with Azure (Logic Apps, Web Apps, Monitor)
  • Familiarity with CI/CD pipelines (Azure DevOps) and automated testing
  • Strong UI/UX awareness (layout, typography, responsiveness, design consistency)
  • Exposure to React or similar front‑end frameworks beneficial

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Posted: April 17th, 2026