Senior .NET & React Full-Stack Developer (Healthcare)

OpportuLand; United Kingdom; Remote; GBP 78,000 - 110,000; Full time

Job summary

OpportuLand in the United Kingdom is seeking a Senior Full-Stack Developer to join its digital healthcare platform. The role is backend-weighted, building ASP.Net Core Web APIs and the data layer, while also extending the React front end.

You will work with Azure services, implement tests with xUnit, Moq on backend and Vitest or Jest on frontend, participate in code reviews, architecture decisions, and CI/CD improvements. 5+ years of experience required, strong C#, .NET, React and TypeScript.

Qualifications

• 5+ years of commercial development experience.
• Strong C# and .NET: ASP.Net Core Web APIs, EF Core, SQL Server.
• Experience designing REST APIs and backend processing patterns.
• Strong React and TypeScript skills; familiarity with hooks and libraries.
• Hands-on Azure experience and containerized deployments.
• Git, Docker and CI/CD (GitLab) experience.
• Testing with xUnit/Moq on backend and Vitest/Jest/Playwright on frontend.

Responsibilities

• Design and build ASP.Net Core Web APIs and data layer with EF Core.
• Implement background processing: queues, scheduled jobs, event-driven messaging.
• Develop frontend features in React and TypeScript.
• Work with Azure services across the stack and CI/CD improvements.
• Contribute to code reviews, architectural decisions, and testing.

Skills

C# & .NET

ASP.Net Core Web APIs

Entity Framework Core

SQL Server

REST APIs

Background processing

React & TypeScript

Azure

Git & Docker

CI/CD (GitLab)

Testing (xUnit/Moq)

Vitest/Jest/Playwright

SignalR

Tools

Azure App Service

Storage Queues

Event Grid

Docker

GitLab

MongoDB

Redis

Nx monorepo

Job description

OpportuLand in the United Kingdom is seeking a Senior Full-Stack Developer to join its digital healthcare platform. The role is backend-weighted, building ASP.Net Core Web APIs and the data layer, while also extending the React front end.

You will work with Azure services, implement tests with xUnit, Moq on backend and Vitest or Jest on frontend, participate in code reviews, architecture decisions, and CI/CD improvements. 5+ years of experience required, strong C#, .NET, React and TypeScript.