> Markdown version of [/jobs/ext/4011427-full-stack-developer-net-react-100-remote-within-spain](https://www.wearedevelopers.com/jobs/ext/4011427-full-stack-developer-net-react-100-remote-within-spain). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Full stack developer (.NET, React) 100% remote within Spain

- **Company:** UST Inc
- **Location:** Aliso Viejo, CA, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Multitier Architecture, Artificial Intelligence, HTML5, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Cascading Style Sheets (CSS), Cloud Computing, Static Program Analysis, Software Quality, Code Review, Entity Framework, Github, Software Engineering, TypeScript, Web Applications, .NET Core, ReactJS, Backend, AI Platforms, Material UI, Solid Principles, Front End Software Development, Restful APIs, Es2015, Domain Driven Design, Vulnerability Analysis, Microservices
- **Published:** October 29, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/pvbkfnmqjd

## About the Role

Backend: 7+ years of software development experience.

Strong expertise in: C# .NET Core / .NET 8, ASP.NET Core, Entity Framework Core, React.js, TypeScript, JavaScript, ES6+ , HTML5, CSS3, Material UI or similar frameworks

Extensive Experience With Microsoft Azure.

CI/CD pipelines

AI & Data

English B2+/C1, * NET, C#, Code Review, Azure DevOps, Domain-Driven Design, Microsoft Azure, TypeScript, Test Automation

## Description

We are looking for a Senior full stack developer with deep expertise in .NET, React, Azure Cloud, and Artificial Intelligence technologies.

The ideal candidate will be responsible for designing, developing, and delivering scalable cloud-native applications while driving the adoption of AI-powered solutions across the software development lifecycle.

This role requires a hands-on senior who can work across front-end, back-end, cloud infrastructure, and AI services to build innovative digital products. You will collaborate closely with architects, product owners, data scientists, and cross-functional engineering teams to deliver secure, scalable, and intelligent applications.

Main Tasks And Accountabilities Will Be

Software Development Design, develop, and maintain enterprise-grade web applications using: .NET 8 / C# ASP.NET Core React.js and TypeScript RESTful APIs and Microservices

Develop highly scalable and maintainable cloud-native solutions.

Implement modern software engineering practices including Clean Architecture, Domain-Driven Design (DDD), and SOLID principles, Azure DevOps GitHub Actions

Participate in architecture discussions and technology decisions.

Improve code quality through: Automated testing Security scanning Static code analysis Code reviews

Work closely with Product Owners and Business Stakeholders to translate business requirements into technical solutions.

Lead technical workshops, design reviews, and proof-of-concepts.

Drive innovation and continuous improvement initiatives.

Provide technical leadership and guidance across development teams.