Summary: Seeking an experienced Full-Stack Developer to join a high-performance team, combining deep programming with technical oversight and architectural design for robust, secure, and scalable applications. Highlights: 1. Builds high-load applications using modern .NET and React stack 2. Involves architectural decision-making and technical oversight 3. Ownership of the entire SDLC in an Agile/Scrum environment **Senior Full stack (.NET/React) Developer** **Lisbon \#hybrid** We are seeking an experienced Full\-Stack Developer to join our high\-performance development team, which builds high\-load applications. This role combines deep, hands\-on programming with technical oversight and architectural design. You will be responsible for creating robust, secure, and scalable applications using a modern .NET stack on the backend and React on the frontend. **Responsibilities**  Make architectural decisions, design scalable, maintainable, and efficient software systems.  Translate business requirements into robust technical solutions.  Take ownership of the entire software development lifecycle within an Agile/Scrum environment, from requirement analysis through to deployment and production support.  Keep track of technical debt and initiate refactoring projects.  Implement RESTful WebAPI services using .NET/C\#.  Build responsive and high\-performance UI components with React, TypeScript, and Redux (or a similar state management system).  Implement and manage integrations with various systems and third\-party services, including authentication and authorization.  Collaborate with DevOps teams to manage applications in a cloud environment (e.g., Azure or AWS) and ensure smooth CI/CD automation and deployment processes.  Ensure high standards of code quality, security, and performance across the entire stack by implementing testing strategies (unit, integration, and end\-to\-end testing). **Skills / Qualifications**  Expert\-level development of Web APIs using C\#/.NET.  Proficient in React for frontend development.  Solid understanding of UI/UX best practices, responsive design, CSS\-in\-JS (styledcomponents, Emotion), or SCSS.  Ability to write clear technical documentation and API specifications (OpenAPI/Swagger).  Knowledge of Git, Windows Server, and DevOps practices. Location: Full\-time position in Lisbon, Portugal. Hybrid work format: 3 days per week in the office. Job Type: Full\-time Pay: 60,000\.00€ \- 70,000\.00€ per year