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.
RESPONSIBILITIES
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Design and build a responsive, real-time HMI using React and modern JavaScript/TypeScript.
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Develop backend services in Python for data acquisition, processing, and API layers.
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Architect and implement reliable communication with Siemens PLCs via OPC UA.
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Build and maintain scalable, fault-tolerant cloud systems (leveraging Elixir for concurrency-heavy components).
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Collaborate with controls engineers to map machine recipes into easy-to-understand operator interfaces.
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Implement real-time data streaming, alerting, and visualization systems.
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Ensure system reliability, observability, and performance in industrial environments.
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Contribute to deployment pipelines and edge/on-premises system architectures.
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Write clear documentation and participate in code reviews.
QUALIFICATIONS
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Strong proficiency in JavaScript/TypeScript, especially with React required.
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Experience building robust backend systems in Python or C++ required.
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Hands-on experience with OPC UA required (client/server implementation, data modeling, security).
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Solid understanding of distributed systems, networking, and API design required.
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Experience working with industrial automation systems, PLCs, or SCADA/HMI platforms required.
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Familiarity with asynchronous programming and real-time data handling required.
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Ability to debug complex interactions between hardware and software systems required.
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Experience working with Siemens PLCs preferred (e.g., S7 series, TIA Portal ecosystem).
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Exposure to Elixir/Erlang or other high-concurrency, fault-tolerant systems preferred.
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Knowledge of industrial protocols beyond OPC UA preferred (e.g., Modbus, Profinet).
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Experience deploying software to edge devices or on-prem industrial environments preferred.
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Familiarity with containerization (Docker) and CI/CD pipelines preferred.
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Understanding of cybersecurity practices in industrial networks preferred.
BENEFIT SUMMARY
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Health and Wellness: Medical; Dental; Vision.
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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).
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Well-being and Support: Wellness Program; Education Assistance; Paid Time Off.
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Safety and Comfort: Safety Shoe and Prescription Safety Glasses Program; Seniority Recognition Program; Employee Assistance Program.
