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Urgent! Freelance Senior Backend Engineer –.Net Core & Cloud Migration Jobs | Education Dynamics, Inc.

Freelance Senior Backend Engineer –.Net Core & Cloud Migration



Job description

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.


Required Skill Profession

Computer Occupations



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