ppEnergy trading moves fast, and the tools behind it need to keep up. You’ll become the go‑to person for a complex, business‑critical application at the heart of Axpo’s energy trading operations. You’ll start by working alongside external developers to deeply understand the system and its business logic, then progressively take ownership — delivering change requests, supporting users and driving technical improvements. Over time, you’ll modernize legacy logic into clean .NET code, improve test coverage and help evolve the frontend. This is hands‑on, technical work on a real system with real users. /p h3Tasks and Responsibilities /h3 ul liLearn, document and internalize application logic and business rules currently held by external developers. /li liDeliver change requests, bug fixes and small features to continuously add business value. /li liProvide L1/L2 support: assess and prioritize reported issues, diagnose root causes, implement fixes or workarounds. /li liDesign and develop ASP.NET Core APIs and background services. /li liMaintain and evolve the frontend (Angular). /li liEnsure quality through automated testing and solid CI/CD practices. /li liCollaborate with analysts, architects and engineers to plan and deliver iteratively. /li liUse AI‑assisted tools (LLMs, Copilot) to accelerate development and refactoring. /li liContribute to technical documentation and architectural decisions. /li liOver time, rearchitect and modernize application components, bringing business logic into clean, testable .NET code. /li /ul h3Qualifications /h3 h3Education /h3 ul liUniversity degree in Software Engineering or a quantitative subject. /li /ul h3Professional Competencies (Must‑have)



/h3 ul li5+ years of experience with C#/.NET (ASP.NET Core, RESTful APIs); strong OOP and clean code practices. /li liSolid SQL skills — comfortable working with complex queries, stored procedures and database logic. /li liExperience with Angular (v17+). /li liExperience with automated testing and CI/CD pipelines (Azure DevOps or GitHub Actions). /li liEffective use of AI coding assistants to boost productivity. /li /ul h3Nice‑to‑have /h3 ul liFamiliarity with ORM tools (e.g. Entity Framework Core) and data access patterns. /li liExperience with other modern frontend frameworks (e.g. React) /li liMessaging systems (RabbitMQ, Azure Service Bus, Kafka). /li liCloud DevOps (Azure, Terraform, Ansible). /li liReal‑time frameworks (SignalR). /li liObservability tools (Elastic Cloud, Application Insights). /li liExperience with application modernization projects. /li liFamiliarity with the energy sector. /li /ul h3Personal Competencies /h3 ul liAnalytical problem‑solver who thrives on complexity. /li liClear communicator and collaborative team player. /li liCurious learner who embraces new tools and ways of working. /li /ul h3Languages /h3 ul liProficient in English. /li /ul h3Benefits /h3 pAt our company, we strive to create a culture of continuous learning, personal growth, and international community involvement.



We’re passionate about providing our employees with the tools and resources they need to succeed, and we’re confident that you’ll love being part of our team! /p ul liWorking Hours – Adaptable working hours to accommodate your work schedule. 60% remote and 40% at our offices in Madrid, Torre Europa. /li liMeal Allowances – You can enjoy delicious meals on us, no matter if you are working remotely or on‑site. /li liOption to use for public transportation or childcare instead. /li liInternet Compensation – We cover the cost of your home internet connection, as we understand how essential connectivity is in the modern workplace. /li liTraining Courses – Our company is committed to helping our employees grow and develop their skills, which is why we offer a variety of industry‑specific training courses and a learning channel. /li liGym Coverage – Stay active and healthy with our 90% coverage benefit, which provides access to the nearby gym: Forus Selection to keep you energized throughout the day. /li liHealth Insurance – We take the health and well‑being of our employees seriously, which is why we offer a comprehensive health insurance plan and the option to extend it to your spouse and children. /li /ul pAt Axpo Group, we are dedicated to fostering a culture of non‑discrimination, tolerance, and inclusion. As an equal opportunity employer, we welcome applications regardless of race and ethnicity, gender identity and expression, sexual orientation, age, disability, as well as socioeconomic, cultural, and religious background. We are committed to ensuring a respectful and inclusive recruiting process and workplace for everyone. /p /p #J-18808-Ljbffr

📌 .NET Fullstack Engineer (f/m/d) (Madrid)
🏢 Axpo Group
📍 Madrid