Senior .NET+React Full-Stack Engineer (Hybrid/Remote)

KCS IT; Porto; Hybrid; EUR 55,000 - 75,000; Full time

Job summary

KCS IT, based in Portugal, is looking for an Amazing Senior Full Stack Developer .NET+ React to join our hybrid Porto team. The role requires 5+ years of experience and strong backend (C#) and frontend (React) skills, with a focus on delivering robust REST APIs and scalable microservices.

The position is hybrid in Oporto, with candidates already living in Portugal. You will collaborate across cross-functional teams, work with modern tools (CI/CD, Docker, Kubernetes) and ensure code quality

Qualifications

• 4+ years as a Developer with at least 2 years in a Full Stack role.
• Strong experience with .NET / .NET Core / ASP.NET Core and C# for backend.
• Practical React.js experience with hooks, components, state management, routing.
• Solid knowledge of JavaScript/TypeScript, HTML and CSS.
• Experience with SQL Server or PostgreSQL and MongoDB/Redis.
• Built or consumed REST APIs and used Git for version control.
• Experience with CI/CD tools like Azure DevOps or GitHub Actions.
• Familiarity with Docker and Kubernetes and web security best practices.
• Experience with automated testing tools: Jest, React Testing Library, xUnit/NUnit.
• Experience with microservices architecture and distributed systems.
• Fluent English for technical communication.

Skills

Full Stack Development

.NET/.NET Core/C#

React.js

JavaScript/TypeScript

HTML/CSS

REST APIs

Git version control

CI/CD tools

Azure DevOps

GitHub Actions

Docker

Kubernetes

Security best practices

Microservices

English communication

Tools

Git

Azure DevOps

GitHub Actions

Docker

Kubernetes

SQL Server

PostgreSQL

MongoDB

Redis

xUnit/NUnit

Jest

React Testing Library

Job description

KCS IT, based in Portugal, is looking for an Amazing Senior Full Stack Developer .NET+ React to join our hybrid Porto team. The role requires 5+ years of experience and strong backend (C#) and frontend (React) skills, with a focus on delivering robust REST APIs and scalable microservices.

The position is hybrid in Oporto, with candidates already living in Portugal. You will collaborate across cross-functional teams, work with modern tools (CI/CD, Docker, Kubernetes) and ensure code quality