Senior .NET Core Developer – System Integration

TechFlow Inc

Freelance · Remote · Flexible hours

About the role

We are enhancing a B2B SaaS platform with a new multi‑tenant feature set. You will design and implement core services that isolate tenant data, enforce custom business rules, and scale on demand.

Key responsibilities

• Architect and code multi‑tenant APIs using .NET Core
• Integrate Azure services for tenancy isolation, caching, and monitoring
• Write unit, integration, and contract tests to ensure reliability
• Collaborate with product owners to translate requirements into technical specs
• Document architecture decisions and API contracts for future teams

Must-have skills

• 5+ years of .NET Core development
• Strong C# expertise and clean‑code practices
• Hands‑on experience with Azure (App Service, SQL, Key Vault)
• Deep understanding of multi‑tenant design patterns
• Proficient with CI/CD pipelines and automated testing

Nice to have

• Experience with Docker and Kubernetes
• Familiarity with event‑driven architectures
• Background in B2B SaaS product development