At Winning Consulting we are looking for a Senior Backend Engineer (.NET / AWS) to join an international delivery team building and operating API-driven backend services.
From Spain
Responsibilities

• Design, build and maintain backend services and APIs within the C#/.NET ecosystem (development, troubleshooting, debugging and service operations).
• Deliver and operate serverless workloads on AWS, contributing to solutions using API Gateway, Lambda, DynamoDB and S3.
• Implement and maintain API security practices: authentication/authorization, middleware, secure configuration, secrets management and access controls.
• Contribute to reliable deployments and operational excellence through Infrastructure as Code (Terraform).
• Ensure production readiness through observability and operations, using CloudWatch logs, metrics and alarms to monitor, troubleshoot and improve system reliability.

• 5–7 years of experience in backend engineering 
• Strong C#/.NET API experience  (drivers, services, debugging, troubleshooting).
• Solid understanding of API design (REST principles, versioning, error handling, performance).
• Hands-on or strong fundamentals in AWS serverless (API Gateway, Lambda, DynamoDB; S3 is a plus).
• Experience with operational monitoring and incident troubleshooting using CloudWatch logs/metrics/alarms.
• English fluent mandatory 

🌐 Sobre Winning Consulting
En Winning Consulting, impulsamos la transformación de nuestros clientes mediante consultoría, formación, selección, y investigación. Aplicamos pensamiento científico y metodologías probadas para generar valor sostenible.📎 Más info: www.winning-consulting.com