Senior .NET Core Developer – Backend Scalability

TechFlow Inc

Contract · Remote · Flexible hours

About the role

TechFlow Inc is modernizing a legacy production platform that must stay online 24/7. We need a .NET Core Developer to redesign critical services while ensuring zero‑downtime deployments. You will work closely with architects and operations to translate the existing monolith into cloud‑native micro‑services.

Key responsibilities

• Refactor legacy .NET codebases into .NET 7+ using clean architecture principles
• Design and implement Azure‑based CI/CD pipelines that support blue‑green releases
• Introduce health‑checks, feature flags, and automated rollbacks to meet zero‑downtime goals
• Collaborate with QA to create integration test suites for seamless migration
• Document migration patterns and provide knowledge‑transfer sessions for the internal team

Must-have skills

• 5+ years of professional .NET Core development
• Strong C# expertise and experience with Azure services (App Service, Functions, DevOps)
• Proven track record of modernizing legacy systems with zero‑downtime strategies
• Solid understanding of containerization and orchestration (Docker, Kubernetes)

Nice to have

• Experience with Terraform or ARM templates
• Familiarity with Event‑Driven architectures and Azure Service Bus