Unisys is a global information technology company that specializes in providing industry-focused solutions integrated with leading-edge security to clients in the government, financial services, and commercial markets. With a history spanning over a century, the company operates at a massive scale, delivering services in digital workplace, cloud and infrastructure, and enterprise computing to organizations worldwide.

In Spain, Unisys maintains a strong presence primarily centered in Madrid, where it supports major national and international clients across various sectors including aviation and transportation. The company offers a multicultural work environment suitable for international professionals, with a focus on modernizing legacy systems and implementing advanced cloud and software solutions.

Unisys was formed in 1986 through the merger of mainframe corporations Sperry and Burroughs, though its roots trace back to the late 19th century. It has since transitioned from a hardware manufacturer into a global IT services and consulting firm.

For international professionals

Operates a major service and delivery hub in Madrid, supporting global clients.
Offers a diverse range of roles from legacy mainframe operations to modern full-stack development and SAP consulting.
The company's global nature often requires English proficiency, making it accessible for international hires.
Provides opportunities for career growth within a structured, multinational corporate environment.

This job was published 3 months ago

Senior .NET Developer

Unisys

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

What success looks like in this role:

Proficiency in Visual Basic, C#, .NET Framework 4.8+, .NET 8.0+, ASP.NET MVC, ASP.NET Web API 2, ASP.NET Core MVC, Web API with .NET Core.
Extensive knowledge of Entity Framework and Entity Framework Core.
Front-end development experience: HTML5, CSS3, jQuery, Angular 19 or higher, React 18 or higher.
Expert in SQL Server 2014-2022, including query design and optimization, stored procedures, and integration with .NET applications.
Experience with ASP.NET Razor Pages and modern UI/UX patterns.
Advanced use of GIT as a version control system (GitFlow, PRs, branching strategies).

Experience in code refactoring to improve maintainability, performance, and robustness following SOLID principles, Clean Code, and design patterns.
Continuous application of code review practices, correction of code smells, and reduction of technical debt.
Strict compliance with quality standards defined in SonarQube, ensuring the correction of vulnerabilities, bugs, security hotspots, and maintainability issues.
Implementation of quality metrics in CI/CD pipelines, ensuring that code meets SonarQube Quality Gates before each deployment.

Knowledge of WPF (Windows Presentation Foundation) and WCF (Windows Communication Foundation).
Experience in the design and implementation of microservices with .NET Core, including DDD, CQRS, and Clean Architecture patterns.
Integration with REST and SOAP services.
Architecture design and documentation using UML.

Knowledge of development and deployment of applications in the following is valued:

Azure App Service
Azure Functions
Azure SQL Database
Storage Accounts (Blobs/Queues/Tables)

You will be successful in this role if you have:

Experience with Azure Kubernetes Service (AKS) for containerized deployments.
Management and integration via Azure API Management (APIM).
CI/CD Jenkins.
Knowledge of containers: Docker, Dockerfiles, multi-stage images.

Proficiency in IIS 10.0 for deployments and advanced configuration (authentication, bindings, optimization).
Experience in ETL, data modeling and exploitation, and Power BI.
Knowledge of Redis Cache and other distributed caching solutions.
Competence in On-Premise and hybrid Cloud environments.

Implementation of OAuth2, OpenID Connect, Azure AD, and secure authentication and authorization.
Secrets management with Azure Key Vault.
Application of OWASP patterns and secure development best practices.

Work Methodologies

Demonstrable experience working in agile environments (SCRUM, KANBAN).
Active participation in refinement, planning, retrospective meetings, and the definition of epics/stories.

Experience in coordinating technical teams.
Use of Confluence, Jira, QMetry

We offer you:

Permanent contract.
3 remote days per week
Free parking and garage
Employee and Family Wellness and Assistance Program
International and diverse environment with global opportunities
Tailored career plan, oriented towards growth and continuous learning.
Continuous training, both technical and competency-based (English classes, interpersonal skills courses...).
Dynamic projects with major clients in the aeronautical sector
Attractive flexible remuneration plan: life insurance, health insurance, childcare vouchers, restaurant vouchers, transport vouchers...

Unisys is proud to be an equal opportunity employer that considers all qualified applicants without regard to age, caste, citizenship, color, disability, family medical history, family status, ethnicity, gender, gender expression, gender identity, genetic information, marital status, national origin, parental status, pregnancy, race, religion, sex, sexual orientation, transgender status, veteran status or any other category protected by law.

This commitment includes our efforts to provide for all those who seek to express interest in employment the opportunity to participate without barriers. If you are a US job seeker unable to review the job opportunities herein, or cannot otherwise complete your expression of interest, without additional assistance and would like to discuss a request for reasonable accommodation, please contact our Global Recruiting organization at GlobalRecruiting@unisys.com or alternatively Toll Free: 888-560-1782 (Prompt 4). US job seekers can find more information about Unisys' EEO commitment here.

View original advert (Spanish)

What success looks like in this role:

Dominio de Visual Basic, C#, .NET Framework 4.8+, .NET 8.0+, ASP.NET MVC, ASP.NET Web API 2, ASP.NET Core MVC, Web API con .NET Core.
Amplio conocimiento en Entity Framework y Entity Framework Core.
Experiencia en desarrollo front: HTML5, CSS3, jQuery, Angular 19 o superior, React 18 o superior.
Experto en SQL Server 2014-2022, incluyendo diseño y optimización de consultas, procedimientos almacenados e integración con aplicaciones .NET.
Experiencia en ASP.NET Razor Pages y patrones modernos de UI/UX.
Uso avanzado de GIT como sistema de control de versiones (GitFlow, PRs, branching strategies).

Experiencia en refactorización de código para mejorar mantenibilidad, rendimiento y robustez siguiendo principios SOLID, Clean Code y patrones de diseño.
Aplicación continua de prácticas de code review, corrección de code smells y reducción de technical debt.
Cumplimiento estricto de estándares de calidad definidos en SonarQube, garantizando la corrección de vulnerabilidades, bugs, security hotspots y problemas de mantenibilidad.
Implantación de métricas de calidad en pipelines CI/CD, asegurando que el código cumple los Quality Gates de SonarQube antes de cada despliegue.

Conocimientos en WPF (Windows Presentation Foundation) y WCF (Windows Communication Foundation).
Experiencia en diseño e implementación de microservicios con .NET Core, incluyendo patrones DDD, CQRS y Clean Architecture.
Integración con servicios REST y SOAP.
Diseño y documentación de arquitectura mediante UML.

Valorable conocimientos de desarrollo y despliegue de aplicaciones en:

Azure App Service
Azure Functions
Azure SQL Database
Storage Accounts (Blobs/Queues/Tables)

You will be successful in this role if you have:

Experiencia con Azure Kubernetes Service (AKS) para despliegues containerizados.
Gestión e integración mediante Azure API Management (APIM).
CI/CD Jenkins.
Conocimientos de contenedores: Docker, Dockerfiles, imágenes multi-stage.

Dominio de IIS 10.0 para despliegues y configuración avanzada (autenticación, bindings, optimización).
Experiencia en ETL, modelado y explotación de datos, y Power BI.
Conocimientos en Redis Cache y otras soluciones de caché distribuida.
Solvencia en entornos On-Premise y Cloud híbridos.

Implementación de OAuth2, OpenID Connect, Azure AD, autenticación y autorización segura.
Gestión de secretos con Azure Key Vault.
Aplicación de patrones OWASP y buenas prácticas de desarrollo seguro.

Metodologías de Trabajo

Experiencia demostrable trabajando en entornos ágiles (SCRUM, KANBAN).
Participación activa en reuniones de refinamiento, planificación, retrospectivas y definición de épicas/historias.

Experiencia en coordinación de equipos técnicos.
Uso de Confluence, Jira, QMetry

Te ofrecemos:

Contrato indefinido.
3 días de remoto a la semana
Estacionamiento gratuito y garaje
Programa de Bienestar y Asistencia al Empleado y sus familiares
Entorno internacional y diverso con oportunidades a nivel mundial
Plan de carrera a medida, orientado a crecimiento y aprendizaje continuo.
Formación continuada, tanto técnica como competencial (clases de inglés, cursos de Skills interpersonales...).
Proyectos dinámicos y en grandes Clientes del sector aeronáutico
Interesante plan de retribución flexible: seguro de vida, seguro médico, tickets guardería, tickets restaurante, tickets transporte...