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Role overview
We are seeking a Senior .NET Developer to take ownership of complex bounded contexts on a greenfield, multi-tenant platform built on .NET 8, Clean Architecture and MediatR/CQRS.
Beyond delivering features, you will shape backend patterns, mentor mid-level engineers and ensure the codebase stays testable, observable and secure-by-design across the product's bounded contexts.
Key responsibilities
1.Architecture and design
Design and implement domain-driven bounded contexts using MediatR, FluentValidation and CQRS.
Define the Dapper-first + EF Core data-access strategy with a clean repository / adapter pattern.
Implement ambient multi-tenancy (e.g. an ICnpContext-style context flowing through the MediatR pipeline).
2.Security and platform
Integrate OIDC authentication via Duende IdentityServer and typed feature flags via Microsoft.FeatureManagement.
Ensure no secrets live in source or images, consuming configuration from Azure Key Vault.
3.Quality, observability and mentorship
Drive test-first development with xUnit + FluentAssertions and meaningful coverage gates.
Instrument services with OpenTelemetry and Application Insights for unified traces, metrics and logs.
Mentor developers through pairing, code reviews and design discussions.
Required technical skills and competencies
6+ years of C# / .NET development with strong .NET 8 / ASP.NET Core expertise.
Deep experience with MediatR, CQRS and FluentValidation in production systems.
Strong data-access skills across Dapper and EF Core, plus advanced SQL Server / T-SQL.
Proven application of Clean Architecture and Domain-Driven Design.
Experience with OIDC / OAuth2 authentication flows.
Test-first discipline with xUnit / FluentAssertions and CI/CD on Azure DevOps.
Must have skills
Expert .NET 8 / ASP.NET Core with MediatR, CQRS and FluentValidation.
Strong Dapper + EF Core and advanced SQL Server skills.
Demonstrated Clean Architecture / DDD experience on real systems.
Track record of mentoring engineers and owning technical quality.
Good to have skills
Experience building multi-tenant SaaS with per-tenant data isolation.
Hands-on with Duende IdentityServer or IdentityServer4.
Experience with Azure Key Vault, feature management and Docker/AKS.
Familiarity with OpenTelemetry-based observability.
Hands-on experience using AI tools in the Software Development Lifecycle; Claude and GitHub Copilot preferred.
Desired attributes
Strong ownership mindset and engineering discipline.
High attention to detail with strong analytical and problem-solving skills.
Effective communicator who collaborates well across distributed, cross-functional teams.
Comfortable working in a greenfield environment with evolving standards and a test-first culture.
Passion for continuous improvement, clean code and engineering excellence.
Interview process
2 rounds of discussion.
