Sr. Developer

Are you interested in working with the World’s leading AI-powered Quality Engineering Company? Ready to advance your career, team up with global thought leaders across industries and make a difference every day? Join us at QualityAI! We are looking for a Sr Developer to join our growing team in Argentina or Mexico!    Location: Argentina/Mexico (Remote)  Time zone: EST    We’re seeking Senior Engineer who thrives at the intersection of scalable cloud architecture and modular frontend development. You’ll build Azure-native services in C# using Functions, Service Bus, and Event Grid, while crafting composable. This role demands deep expertise in SOLID principles, unit testing, and DevOps workflows across GitHub and Azure DevOps.   Responsibilities • Implement Azure Functions using C# (.NET 8+) for event-driven and serverless workflows • Design and integrate messaging systems using Azure Service Bus and Event Grid (topics, subscriptions, filters) • Build modular, tree-shakable TypeScript ESM libraries with clean separation of concerns • Write comprehensive unit tests for both C# and TypeScript codebases using xUnit, MSTest, and Vitest • Apply solid principles rigorously across backend and frontend components • Collaborate on CI/CD pipelines using Azure DevOps and GitHub Actions for build, test, and deployment automation • Ensure traceability and observability across services with structured logging and diagnostics • Participate in code reviews, architecture discussions, and developer onboarding   Required Skills * .NET & C# > 5+ years experience, async/await, DI, clean architecture * Azure Functions > Durable workflows, bindings, retries, diagnostics * Azure Messaging > Service Bus (topics, sessions), Event Grid (custom schemas, filters) * TypeScript & ESM > Deep understanding of ESM syntax, module boundaries, tree-shaking * Unit Testing > xUnit/MSTest for C#, Vitest for TypeScript, mocking strategies * Solid Principles > Proven application across layered architecture and modular design * DevOps & Git > Experience with Git workflows, GitHub Actions, Azure DevOps pipelines   Preferred Skills • Familiarity with Power Platform extensibility or Azure Logic Apps • Knowledge of domain-driven design (DDD) & event sourcing • Passion for developer enablement, modularity, and reproducibility Profil recherché: