Systems Programmer

5 days ago

Allenby Gardens South, Australia RFI Technology Solutions Full time $80,000 - $120,000 per year

Systems Programmer (Networking)

We are seeking a highly skilled
Systems Programmer (Networking)
to contribute to the development of our industrial communication and networking products. You will have a deep understanding of networking and a proven specialisation in the Modbus protocol.

This role is for a hands-on developer who is passionate about building robust, high-performance industrial communication systems. The ideal candidate will have extensive experience with low-level C programming and a comprehensive knowledge of how to implement and optimise Modbus over the TCP/IP networking stack; as well as a comprehensive understanding of networking concepts and protocols from L2/L3 up to application-level industrial protocols such as MQTT.

Key Responsibilities:

  • Design, develop, and maintain Modbus-based network software and drivers in C.
  • Implement and extend code using Modbus, MQTT and other communication protocols to meet specific industrial application requirements.
  • Optimise network performance, latency, and reliability for inter-device communication.
  • Debug complex networking issues at the packet and protocol level using tools like Wireshark, with a focus on Modbus packet analysis.
  • Integrate Modbus, MQTT and other communication protocols with various hardware devices and industrial controllers.
  • Collaborate with cross-functional development teams to ensure seamless connectivity, scalability, and performance across RFI's networkable products.
  • Contribute to the design of product network architectures, including L2/L3 configuration, VLANs, routing, and protocol selection for industrial environments.
  • Become a subject matter expert in RFI's range of industrial communication and networking products.

Required skills and qualifications:

  • Proven proficiency in C programming, with experience working within electronics product development. · Deep and demonstrable knowledge of the Modbus protocol (TCP and RTU), and practical experience working with MQTT libraries.
  • Strong understanding of the TCP/IP protocol suite, including socket programming.
  • Knowledge of industrial communication and networking tools, products and standards.
  • Experience with network analysis and debugging tools (e.g., Wireshark) for diagnosing protocol-specific issues.
  • Solid knowledge of operating system fundamentals, including processes, threads, and memory management.
  • Familiarity with network security and product hardening in industrial environments would be highly advantageous.
  • Strong analytical and problem-solving skills with a meticulous attention to detail

A determined attitude and desire to succeed are key attributes we will seek in this role. If you have the skills and experience, then we want to hear from you. To find out more about RFI visit us

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