Freelance Senior Backend Engineer – .NET Core & Cloud Migration

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, con...