Looking to take the next step in your software engineering career? This is an opportunity to join a high-performing team working on technology that sits at the heart of energy trading operations.

You’ll work on a business-critical platform used by real users every day, gaining exposure to complex systems, modern engineering practices and the latest AI-assisted development tools. Supported by experienced colleagues, you’ll deepen your technical expertise while taking ownership of enhancements, resolving issues and contributing to the ongoing evolution of the application.

This role is adecuado for a developer with a solid foundation in .NET who wants to learn from a strong engineering team, accelerate their growth and embrace modern development approaches, including GitHub Copilot and other AI-powered coding tool s.

What You’ll Be Doing

Enhancing and maintaining a core trading application

Delivering new features, improvements and bug fixes

Investigating and resolving technical issues alongside users and stakeholders

Building and supporting ASP.NET Core APIs and backend services

Contributing to the Angular frontend

Writing automated tests and supporting CI/CD practices

Working closely with analysts, architects and engineers to deliver value iteratively





Using AI-assisted development tools to improve productivity and code quality

Helping modernise and improve existing application compone nts

What We’re Looking For

3+ years’ experience with C#/.NET and ASP.NET

CoreExperience building APIs and working with SQL databases

Knowledge of Angular or another modern frontend framework

Understanding of software engineering best practices and clean code principles

Exposure to automated testing and CI/CD pipelines

Enthusiasm for learning, collaborating and adopting new technologies

Nice to Have

Entity Framework Core

React or other frontend frameworks

Azure, Terraform or DevOps tooling

Messaging technologies such as RabbitMQ or Kafka

Experience with application modernisation projects

What You’ll Get

The chance to learn from an experienced engineering team

Exposure to modern software architecture and engineering practices

Hands‑on experience with AI-powered development tools

Flexible working hours and hybrid working (60% remote)

Meal allowance, internet contribution and private healthcare

Extensive training and professional development opportunities

Indicative Salary Range €50,000-60,000 + bonus

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📌 Mid Fullstack Software Engineer (Madrid)
🏢 Kureos
📍 Madrid