Senior Backend Engineer - .Net

Must have Qualifications : - Experience : 8-10+ years building backend systems with C# and .NET (Framework and/or .NET 6/7/8), including production-grade services.- API Development : Expert in RESTful API design and implementation; strong understanding of HTTP, versioning, idempotency, pagination, and error handling patterns.- Data & Persistence : Deep experience with SQL Server, advanced SQL, indexing strategies, query optimization, and Entity Framework. Familiarity with transactions, isolation levels, and migration strategies.- Concurrency & Asynchrony : Strong grasp of async/await, task scheduling, and thread safety.- Security : Awareness of secure coding practices and common vulnerabilities (e.g., OWASP guidelines). Familiarity with authentication and authorization concepts (OAuth 2.0, OIDC) and ability to implement basic measures for protecting sensitive data.- Observability : Strong with structured logging (Serilog, NLog), metrics (OpenTelemetry, Prometheus), distributed tracing, and effective alerting/monitoring.- Experience with Cloud Services : Familiarity with cloud platforms such as Azure, AWS, or GCP, including services for monitoring, logging, and secrets management (e.g., Application Insights, CloudWatch, Key Vault, AWS Secrets Manager). Ability to leverage cloud-native features for telemetry and diagnostics.- Unit Testing : Solid experience writing unit tests and integration tests using frameworks like xUnit, NUnit, or MSTest.

Ability to apply mocking frameworks (e.g., Moq) and ensure high code coverage for critical business logic.- Architecture Awareness : Strong awareness of architecture and design principles (SOLID, layered architecture, modularity, maintainability) and ability to apply them in day-to-day development.- Code Quality : Mastery of code reviews, refactoring, static analysis, and dependency management; habit of writing clear, maintainable, well documented code.- Communication : Ability to clearly articulate technical concepts, collaborate effectively with cross-functional teams, contribute to documentation and knowledge sharing, and proficiency in English (written and spoken).Nice to have / Preferred : - Architecture & Design : Experience with DDD, clean architecture, hexagonal/onion architecture, and microservices design; comfortable with synchronous/asynchronous communication, event-driven patterns, and bounded contexts.- Performance & Scalability : Hands-on with profiling, memory/CPU analysis, connection pooling, caching (in proc, distributed), and throughput/latency tuning under load.- CI/CD & DevOps : Experience with automated builds, pipelines, and deployment strategies (GitHub Actions, Azure DevOps, GitLab CI, or similar). Comfortable with artifacts, versioning, trunk based or GitFlow workflows.- Cloud & Containers : Hands-on with Docker for local/dev builds and deployments; experience deploying services to Azure, AWS, or GCP (compute, networking, storage).- Caching & State : Redis/Memcached, cache invalidation strategies, and session/state handling in distributed systems.- Security Depth : Experience with advanced security measures such as Key Vaults, mTLS, role-based access control, and compliance (SOC 2, ISO 27001, GDPR).- Mission-Critical High-Volume Applications : Experience designing and operating systems that handle large-scale traffic, high availability, and low latency requirements. Familiarity with load balancing, horizontal scaling, failover strategies, and performance tuning under heavy load. (ref: hirist.tech)