Contract Cloud Migration Specialist (Backend .NET)
Education Dynamics, Inc.
Freelance Senior Backend Engineer – .NET Core & Cloud Migrations** **To apply for this job you must send your hourly rate and resume to only.
About the Role
We are seeking an experienced Senior Backend Engineer to support a critical application modernization initiative. This role will focus on migrating an existing .NET application to .NET Core, refactoring backend-to-data-layer logic, and transitioning infrastructure from AWS EC2 to containerized environments.
This is a hands-on engineering role suited for someone who has led or executed similar migrations and is comfortable working independently while collaborating closely with QA, DevOps, and product stakeholders.
Key Responsibilities
Lead and execute the migration from .NET Framework to .NET Core
Refactor and modernize backend logic and data access layers
Refactor and update business logic across the backend layer (API services, controllers, etc.) and data layer (Entity Framework, database interactions, ORM optimizations).
Proven track record in containerization and DevOps: Docker, Kubernetes, AWS ECS/EKS, or similar.
Improve application performance, scalability, and maintainability
Support migration from AWS EC2 to containerized infrastructure (Docker, ECS, Kubernetes, or similar)
Solid understanding of RESTful APIs, microservices, and cloud-native principles.
Collaborate with QA to ensure test coverage, regression stability, and data integrity
Assist with CI/CD pipeline integration and deployment best practices
Document architectural decisions, migration steps, and technical changes
Identify risks and propose mitigation strategies during the migration process
Required Qualifications
7+ years of professional backend software development experience
Strong expertise in C#, .NET Framework, and .NET Core
Proven experience migrating legacy applications to modern frameworks
Solid understanding of backend architecture and data-layer design
Experience with AWS, particularly EC2 and container services
Hands-on experience with Docker and containerized deployments
Strong SQL and database experience (e.G., SQL Server, PostgreSQL, or similar)
Comfortable working in a freelance/contract capacity with minimal oversight
Strong communication and documentation skills
Nice to Have
Experience with microservices architecture
Familiarity with Kubernetes or AWS ECS
Knowledge of front-end integration (if needed, e.G., with Angular) or full-stack capabilities.
Experience with performance tuning, security best practices (e.G., OAuth, JWT), and handling large-scale data migrations.
Experience supporting QA during large-scale migrations
Knowledge of CI/CD tools (GitHub Actions, Azure DevOps, Jenkins, etc.)
Previous work on application modernization or platform re-architecture projects
Engagement Details
Freelance / independent contractor role
Flexible hours with some overlap with U.S. business hours
How to Apply
Please submit:
Resume sent to
Contract hourly rate
- To apply for this job you must send your hourly rate and resume to only.
Posted 8 Mar 2026 · Listing from OnJob.io. Create a free profile to apply and see your AI match score.
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