Athena Systems ( Unitedfintech/Athena ) is seeking a Front-End Developer to join our team in Madrid. We are looking for motivated and enthusiastic individuals with a "getting-things-done" mindset to reinforce the team on strategic projects with our clients. You’ll be responsible for building modern and efficient interfaces, collaborating with international teams, and contributing to high-performance product development within our .NET environment. Develop modern, efficient, and scalable user interfaces using front-end frameworks such as React, Angular, or Blazor. · Build components and application logic using HTML, CSS, JavaScript, and TypeScript. · Work closely with our backend team within the .NET ecosystem to deliver seamless integrations. · Apply best practices using SVN for version control. · Participate in UX improvements, feature development, and performance optimization. · Contribute to CI/CD pipelines and support automated deployment workflows. · (Optional) Assist with build automation using Jenkins. · Utilize Docker, with basic knowledge of Kubernetes, to support development and deployment workflows. · 5+ years of front-end development experience. ~ React, Angular, or Blazor (knowledge of multiple is a plus). ~ Proficiency with HTML, CSS, JavaScript, and TypeScript. ~ NET environments is a plus. · Familiarity with CI/CD practices, and optional experience with Jenkins. · Knowledge of Docker and a fundamental understanding of Kubernetes. Fluent English (required), Spanish is optional. You will play a key role in designing and developing front-end solutions used by clients worldwide.