Backend Developer (.NET)

Must-Have:

• At least 5-7 years of professional backend development experience with C# and.NET in production environments
• Strong command of.NET Core, ASP.NET Core Web API, and Entity Framework Core
• Demonstrated experience building RESTful APIs consumed by real frontend or third-party clients
• Solid relational data modelling and SQL skills in PostgreSQL or an equivalent RDBMS, including query performance tuning
• Practical experience with asynchronous processing - background workers, message queues, or scheduled jobs
• Working understanding of async/await in.NET and the failure modes that come with it
• Understanding of event-driven and pub/sub patterns, including at-least-once delivery and idempotent consumers
• Experience integrating with an identity provider using OAuth 2.0 and OpenID Connect
• Comfortable working inside an existing codebase and an established set of engineering standards, rather than setting your own
• Disciplined approach to automated testing across unit, integration, and API layers
• Understanding of what makes automated tests durable - avoiding hard-coded waits, brittle selectors, shared test state, and environment-specific assumptions
• Comfortable working in a Git-based workflow with CI/CD and peer code review
• Must be located in British Columbia, Canada
• Technologies
• Languages/Frameworks: C#,.NET Core, ASP.NET Core, Entity Framework Core
• APIs: REST, OpenAPI/Swagger, API versioning
• Workflow and Async: Temporal workflows, worker services, asynchronous processing, event-driven pub/sub, integration services
• Databases: PostgreSQL, ClickHouse, EF Core migrations, query optimization
• Identity and Authorization: Keycloak, OpenFGA, OAuth 2.0, OpenID Connect, role- and policy-based authorization
• Testing: xUnit/NUnit, Moq, Testcontainers, unit, integration and API testing, Playwright end-to-end testing
• Build/Deploy/Tooling: GitLab, GitLab CI/CD, CodeRabbit automated code review, Docker, Jira, Confluence
• Nice-to-Have:
• Hands-on Temporal experience, including workflow versioning and testing strategies