Senior Backend .NET Core Developer

Role Overview We are seeking a Senior Backend .NET Core Developer to design and implement highly scalable microservices using Domain-Driven Design (DDD), event-driven architectures, and gRPC APIs. You ll build performance, secure data layers with EF Core and MS SQL Server, integrate robust authentication/authorization, and drive best practices across the team. Architect & develop microservices apply DDD to define bounded contexts and aggregates; implement CQRS; build modular .NET Core services Design event-driven solutions implement publish/subscribe workflows with RabbitMQ/Azure Service Bus/Kafka; handle event contracts, serialization, idempotency Build gRPC APIs define protobuf contracts, service definitions, versioning; optimize bidirectional and streaming calls for low latency Optimize data access & performance model schemas in MS SQL Server; tune EF Core queries; profile and resolve bottlenecks (caching, indexing, async patterns) Enforce security & compliance integrate JWT, OAuth 2.0/OpenID Connect (OpenIddict/IdentityServer); apply secure coding practices, encryption, secrets management Collaborate & mentor partner with Product Owners, QA, Front-end, and Mobile teams to clarify requirements; lead code reviews and share best practices Estimate & plan provide high-level effort estimates with strong accuracy and adjust plans under pressure Required Qualifications Bachelor s in Computer Science/Engineering or equivalent 6+ years hands-on .NET Core and C# experience; deep understanding of both .NET Framework and .NET Core Deep understanding of microservices and distributed systems programming models Proven background in event-driven architectures (pub/sub, event sourcing) Strong proficiency with gRPC and protobuf Expert with Entity Framework Core and MS SQL Server (T-SQL, indexing, migrations) Solid experience with authentication & authorization frameworks (JWT, OAuth2, OpenID Connect) Strong knowledge of GOF design patterns and SOLID principles Strong understanding of network fundamentals (HTTP, TCP/IP) Demonstrated ability to profile and optimize high-throughput services Strong experience with multithreading programming models Excellent analytical, problem-solving, estimation, and communication skills Agility and ability to work effectively under pressure while keeping commitments