About the Role We are looking for a highly skilled and experienced Senior .NET IoT & Systems Engineer to join our team. You will play a key role in designing and developing backend systems for real-time data acquisition, industrial device integration, and high-performance processing within PumpTest and IIoT platforms. Description You will build backend systems connecting industrial hardware with cloud platforms, develop multithreaded applications, integrate industrial protocols, and enable real-time data streaming. Tech Stack Backend: C# (.NET 8), Multithreading, Linux Protocols: LXI, SCPI, Modbus, Serial Data: Kafka, Avro API: REST, SignalR, WebSockets Infra: Docker, PostgreSQL, EF Core Security: OAuth2, JWT Key Responsibilities - Develop backend applications in .NET - Implement multithreaded systems - Integrate industrial protocols - Develop APIs and streaming systems - Work with Kafka and PostgreSQL - Ensure security and testing Requirements Systems Programming: Expert C# (.NET 8), Multithreading, Memory Management, and Cross-Platform .NET on Linux (systemd, Deployment). Hardware & IoT Industrial Protocols: Expert in LXI, SCPI, Modbus, and Serial Communication. Experience with Byte-level processing and Data Acquisition (DAQ). Data & Mes-saging High-Throughput Streams: Advanced Kafka (Confluent Client), Avro (Schema-based Seriali-zation), and Real-time Data Acquisition. API & Con-nectivity Hybrid Communication: RESTful Design (OpenAPI/NSwag), SignalR/WebSockets, and Real-time Config via Base64/JSON. Infrastruc-ture Cloud & Containers: Advanced AWS (ECS/EKS, RDS, IAM) and Kubernetes/K3s deployment strategies. Data & Mes-saging Distributed Systems: High-level decisions for Kafka (Partitioning, EOS), Avro compatibility, and Schema Registry. Persistence PostgreSQL & ORM: Advanced data modelling, partitioning, and replication; expert in .NET Persistence Frameworks (Entity Framework Core / Dapper). Specialized Dev Embedded-Adjacent: Expertise in device communication, hardware abstraction, and proto-col integration. Governance Documentation & Strategy: API Governance (REST/gRPC), technical documentation (Arc42/C4), and Stakeholder Management.