Senior C# Backend Engineer, Linux & Connected Systems

We are seeking a Senior C#/.NET Engineer to build backend services that communicate with connected devices and equipment over network-based protocols such as TCP/IP and sockets. The work involves processing live device data, maintaining reliable connections, and building scalable services in Linux environments.

Responsibilities

• Design, develop, and maintain backend services using C# and .NET
• Build software that communicates with devices, gateways, controllers, and external systems
• Develop and support TCP/IP, socket-based, and persistent network connections
• Process real-time, streaming, or telemetry data from multiple sources
• Use messaging and event-driven technologies to distribute data between services
• Design secure, scalable, highly available, and fault-tolerant systems
• Troubleshoot complex issues involving networking, concurrency, performance, and distributed applications
• Collaborate with DevOps teams on cloud deployments, CI/CD, monitoring, and production support
• Own solutions from technical design through implementation and production operation

Qualifications

• 7+ years of professional C#/.NET development experience
• Strong experience developing and troubleshooting .NET services in Linux environments
• Experience with TCP/IP, sockets, persistent connections, or network-based service development
• Experience processing real-time, streaming, telemetry, or device-generated data
• Familiarity with messaging or pub/sub technologies such as Kafka, MQTT, RabbitMQ, or similar platforms
• Strong understanding of asynchronous programming, concurrency, retries, and failure handling
• Experience building secure services using authentication, authorization, encryption, certificates, or secure communications
• Experience with AWS, Azure, GCP, or another cloud platform
• Strong production-debugging and problem-solving skills

Preferred Experience

• Connected devices, IoT, industrial systems, telecommunications, logistics, or other real-time platforms
• Docker, Kubernetes, or containerized services
• High-throughput or event-driven architectures
• Device gateways, equipment communication, or machine-to-machine systems
• Monitoring, logging, tracing, and observability tools

This is a hybrid opportunity with two days onsite each week.