We are looking for a Senior Back End Engineer with 5+ years of experience to join our amazing team. You will join the engineering team responsible for designing, developing and evolving the digital platform backend, including business APIs, integrations with corporate and third-party systems, identity management, data persistence and cloud deployment on Microsoft Azure. The role has direct responsibility for building scalable, secure and highly available backend services, working mainly with Node.js and TypeScript in an architecture based on APIs, containers, PostgreSQL, Redis and Azure. Design, develop and maintain backend services using Node.js and TypeScript. Ensure code quality, maintainability and performance. Participate in the analysis and design of API contracts. Manage secrets and credentials using Azure Key Vault. Develop solutions deployed on Microsoft Azure. Participate in defining scalable, highly available cloud architectures. Collaborate on CI/CD pipelines and automated deployment processes. Participate in monitoring and resolving production incidents. Design relational data models on PostgreSQL. Optimize database queries and performance.



Design caching strategies using Redis. More than 5 years of experience in backend development. More than 3 years developing production solutions with Node.js. Experience working in cloud environments. Node.js TypeScript Express.js and/or NestJS REST APIs OpenAPI / Swagger PostgreSQL Redis Git Service-oriented architectures. OAuth 2.0 OpenID Connect (OIDC) JWT Identity and access management (IAM) Microsoft Azure Azure App Services. Будет плюсом: C#; NET Core; NET Web API; Entity Framework; Experience integrating and maintaining backend solutions developed using Microsoft .
NET technologies will be especially valued; Keycloak; Docker; Kubernetes; Azure DevOps; GitHub Actions; Infrastructure as Code (Terraform or Bicep); Azure Application Insights; Grafana; ELK Stack 1,200 per year for your professional development (training, events, certifications...). ~ Private health insurance fully covered by Capitole. ~ Discounts with major brands through Capitole Club. ~

📌 Backend engineer for digital platforms (Barcelona)
🏢 Capitole
📍 Barcelona