Working Hours: Must be available to work during U.S. Eastern Time (ET) business hours
We are looking for a Senior .NET Developer with extensive experience in enterprise application development, legacy modernization, and hands-on migration of applications from On-Premises environments to AWS .
The adecuado candidate will combine strong C#/.NET engineering skills with deep AWS architecture, cloud modernization, and production migration expertise.
Required Technical Skills:
8+ years of software development experience, including 5+ years working with C#/.NET.
Strong proficiency in C#, .NET 6/8+, ASP.NET Core, and .NET Framework.
Experience developing REST APIs, Web APIs, Microservices, and distributed applications.
Strong knowledge of SQL Server and/or Oracle, Entity Framework/EF Core, and database integration.
Experience with IIS, Windows Services, and legacy application modernization.
Proven hands-on participation in at least 2 end-to-end On-Premises to AWS migration projects , including migration execution, production cutover, and stabilization.
Mandatory AWS Expertise (Hands-on):
Networking: VPC, Subnets, Route Tables, Security Groups, NACLs, Route 53, Load Balancers, and Hybrid Connectivity.
Compute & Hosting:



EC2, ECS/Fargate, EKS, Lambda, Auto Scaling, and API Gateway.
Databases: RDS/Aurora and experience with DynamoDB, ElastiCache, OpenSearch, or managed messaging services.
Security: IAM, KMS, Secrets Manager/Parameter Store, CloudTrail, CloudWatch, and encryption.
Infrastructure as Code: Terraform (preferred), CloudFormation, or AWS CDK.
CI/CD: Jenkins, GitHub Actions, GitLab CI, AWS CodePipeline/CodeBuild, or equivalent tools.
Monitoring & Operations: CloudWatch, troubleshooting, high availability, disaster recovery, and performance optimization.
Nice to Have:
Migration from .NET Framework to .NET 6/8+.
Docker, Kubernetes, ECS/Fargate, or EKS.
AWS Lambda for .NET, SQS/SNS, EventBridge, or Step Functions.
AWS DMS/SCT and SQL Server/Oracle migrations to RDS/Aurora.
Experience in Banking, Financial Services, or Capital Markets.
AWS certifications.
Important: We are seeking a hands-on developer with real AWS migration experience, not profiles focused exclusively on cloud infrastructure, architecture oversight, or project management.

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📌 Senior .NET Developer – AWS Cloud Migration (Ciudad de México)
🏢 Corus Consulting an Alten
📍 Ciudad de México