Software Engineer - Industrial Systems

SUN Automation is seeking a highly capable Software Engineer to join our team in building a next-generation Human Machine Interface (HMI) for corrugated systems powered by Siemens Unified Architecture. This role sits at the intersection of industrial automation and modern web/backend engineering.You will play a key role in designing and implementing a custom HMI using a combination of React (frontend), Python/C++ (backend services), and potentially Elixir. A major component of the role involves integrating with PLCs via OPC UA, requiring both systems thinking and real-world industrial experience.RESPONSIBILITIESDesign and build a responsive, real-time HMI using React and modern JavaScript/TypeScript.Develop backend services in Python for data acquisition, processing, and API layers.Architect and implement reliable communication with Siemens PLCs via OPC UA.Build and maintain scalable, fault-tolerant cloud systems (leveraging Elixir for concurrency-heavy components).Collaborate with controls engineers to map machine recipes into easy-to-understand operator interfaces. Implement real-time data streaming, alerting, and visualization systems. Ensure system reliability, observability, and performance in industrial environments. Contribute to deployment pipelines and edge/on-premises system architectures. Write clear documentation and participate in code reviews. QUALIFICATIONSStrong proficiency in JavaScript/TypeScript, especially with React required.Experience building robust backend systems in Python or C++ required.Hands-on experience with OPC UA required (client/server implementation, data modeling, security).Solid understanding of distributed systems, networking, and API design required.Experience working with industrial automation systems, PLCs, or SCADA/HMI platforms required.Familiarity with asynchronous programming and real-time data handling required.Ability to debug complex interactions between hardware and software systems required.Experience working with Siemens PLCs preferred (e.g., S7 series, TIA Portal ecosystem). Exposure to Elixir/Erlang or other high-concurrency, fault-tolerant systems preferred. Knowledge of industrial protocols beyond OPC UA preferred (e.g., Modbus, Profinet). Experience deploying software to edge devices or on-prem industrial environments preferred. Familiarity with containerization (Docker) and CI/CD pipelines preferred.Understanding of cybersecurity practices in industrial networks preferred.BENEFIT SUMMARYHealth and Wellness: Medical; Dental; Vision.Financial Future: 401k Plan with Company Match; Bonus Program (variable annual bonuses based on company performance); Employee Stock Ownership Plan (annual ESOP stock allocations after meeting eligibility criteria).Well-being and Support: Wellness Program; Education Assistance; Paid Time Off.Safety and Comfort: Safety Shoe and Prescription Safety Glasses Program; Seniority Recognition Program; Employee Assistance Program.