At Capitole we keep growing and we're looking for a Senior .NET Software Engineer to join a high-impact project focused on scalable, distributed systems and cloud-native architectureObtenga más información sobre las tareas generales relacionadas con esta oportunidad a continuación, así como sobre las habilidades requeridas.Do you want to live in Barcelona ? This can be your opportunityYou'll play a key role in the design, architecture and development of robust backend solutions, working with modern .NET technologies and cloud environments.If you enjoy solving complex technical challenges and influencing architectural decisions, this opportunity is for you.Work modelHybrid role (2-3 times per week in Barcelona Office)What we offer€**** annual training budgetFlexible working hours & versátil compensationPrivate health insuranceSports discounts (AndJoy)Team buildings, tech communities & great work environmentWhat you'll doDesign and develop scalable applications using .NET technologiesArchitect and implement distributed systems and microservicesBuild and consume RESTful APIs (ASP. NET Core Web API)Design robust data access layers and optimize database performanceWork with cloud services (AWS) and cloud-native architecturesEnsure non-functional requirements: security, scalability & performanceParticipate in code reviews, technical decision-making & Agile ceremoniesTroubleshoot complex production issues and provide scalable solutionsTech stack.NET Core (6/7/8), C#, ASP. NET Core Web API, SQL Server (stored procedures, indexing, execution plans)NoSQL: MongoDB or AWS DynamoDB, CosmosDB...AWS Cloud (S3, ElastiCache/Redis), RabbitMQ, AWS SQS/SNS, GitJenkins (CI/CD), Docker (fundamentals, environment variables, secrets management)What we're looking for5+ years of experience in software development with strong focus on design & architectureHigh English Level (B2+ - C1)Strong background xohynlm in distributed systems & microservicesDeep knowledge of relational databases