ALPHABET CONSULTING, S.L. es una empresa especializada en la provisión de Servicios TIC e Ingeniería para la gestión empresarial, ofreciendo soluciones diseñadas a medida de las necesidades de nuestros clientes.

About the Role:

We are looking for a Senior Full Stack Developer to drive the ongoing evolution of a corporate intranet platform used by multiple business units across an international hospitality group.

You will work closely within a multidisciplinary team (Product Owner, UX/UI Designers, QA Engineers) to build robust, scalable solution architectures, develop RESTful APIs, and deliver seamless integrations with Microsoft 365, SharePoint, and Azure.

Responsibilities:

- Backend & Architecture: Design, develop, and maintain RESTful APIs in .NET / ASP.NET Core following modern design patterns (Clean / Hexagonal Architecture).
- Frontend (React SPA): Develop reusable UI components using modern React patterns (Hooks, Context), implement state management, and integrate client-side components with backend APIs.
- Microsoft Ecosystem Integrations: Integrate with Microsoft Graph, SharePoint Online, and handle authentication/authorization via Azure AD / Microsoft Entra ID.
- Data Management: Model relational data and optimize queries in MySQL.
- DevOps, Quality & AI: Work in Microsoft Azure environments, support CI/CD pipelines, execute frontend/backend testing (Jest, Cypress), and leverage AI-powered coding tools (GitHub Copilot, Claude Code, etc.).

Requirements:





- Experience: 4–5 years in Full Stack or Backend software development (minimum 3 years with .NET).
- Core Stack: .NET / ASP.NET Core + React SPA.
- Microsoft Ecosystem: Microsoft Graph, SharePoint Online, and Azure AD / Microsoft Entra ID.
- Databases: Relational databases, specifically MySQL.
- Testing: Experience with testing frameworks (Jest, React Testing Library, Cypress) and writing maintainable unit/integration tests.
- Methodologies: Agile environments (Scrum/Kanban) and version control with Git.
- Languages: English proficiency is required.

Nice to Have:

- Experience building corporate intranets, employee portals, or complex business systems.
- Familiarity with microservices or modular monolith architectures.
- Hands-on experience applying Artificial Intelligence (AI) to software development workflows.

Beneficios:

Contrato laboral indefinido y estabilidad desde el primer día.

Todo nuestro apoyo para tu desarrollo personal/competente.

Jornada laboral hibrida., 2 días presenciales (Plaza de la Lealtad, Madrid) / 3 días de teletrabajoIncorporación inmediata.

Excelente clima laboral.

Seguro médico privado con Adeslas (completo + dental).

Pago del 100% exámenes de certificación oficial.

Pago parcial de cualquier curso de IT/Data.

Grandes proyectos con tecnologías avanzadas.

¡Únete a nuestro equipo! ¡En AlphabetCons apostamos por ti!

📌 Programador full stack React &.NET (Senior) (Madrid)
🏢 Alphabet Consulting
📍 Madrid