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Valar Atomics is a Series A nuclear energy company developing scalable, factory-made advanced nuclear systems for clean, high-temperature power generation. The company's first pilot plant in Orangeville, Utah will demonstrate how advanced nuclear systems and fuel fabrication can power industrial applications, hydrogen production, and next-generation manufacturing.
You will join the IC&E Engineering team within the Fuel Manufacturing group as a Senior Controls Software Engineer. This role owns the logic and data layer across PLC and DCS application code, ISA-88 batch sequences, SCADA and HMI applications, historian infrastructure, and enterprise integration. You will work alongside I&C Hardware, process, and nuclear safety engineers in an environment that values operator-focused design, data integrity, disciplined documentation, and safety-first culture.
Key responsibilities include:
- Develop and maintain PLC and DCS application programs using platforms such as Rockwell ControlLogix/CompactLogix, Siemens S7/TIA Portal, Emerson, or equivalent; program in ladder logic, function block, structured text, and sequential function chart per IEC 61131-3.
- Develop and configure SCADA applications on platforms such as Ignition, Rockwell FactoryTalk, AVEVA System Platform, Siemens WinCC, or equivalent; build and maintain tag databases, user-defined types, communication drivers, scripting, templates, and client and redundancy architecture.
- Design HMI displays at both the local panel level and supervisory SCADA level in accordance with ISA-101 and High-Performance HMI principles.
- Develop batch control software in accordance with ISA-88 including phase logic, equipment modules, unit procedures, recipe management, equipment arbitration, and material tracking.
- Configure and manage alarm system software to ISA-18.2 including setpoints, priorities, deadbands, shelving and suppression logic, and alarm performance KPI reporting.
- Program, configure, and functionally test safety logic on SIS platforms (Rockwell GuardLogix, Siemens F-CPU, Triconex, or equivalent) in accordance with IEC 61511.
- Configure plant historian systems (OSIsoft PI / AVEVA PI, Ignition Historian, Rockwell FactoryTalk Historian, or equivalent) including tag configuration, compression and exception settings, and asset framework modelling.
- Implement ISA-95 enterprise-control integration including data exchange interfaces between control systems and MES, ERP, and LIMS; develop and consume REST APIs and database interfaces.
- Configure and troubleshoot industrial communication protocols including OPC-UA, EtherNet/IP, PROFINET, Modbus TCP/RTU, and DeviceNet.
- Write SQL queries, stored procedures, and Python scripts for data processing, transaction handling, report generation, and control system test automation.
- Apply software configuration management practice including version control, change control, structured code review, controller and SCADA application backup and restore, and disaster recovery testing.
- Define OT network architecture and configure cybersecurity controls in accordance with IEC 62443 or NIST SP 800-82.
- Prepare and execute software FAT, SAT, and commissioning test plans; maintain engineering documentation including functional specifications, control narratives, cause-and-effect matrices, tag lists, and alarm databases.
- Diagnose and resolve control system software faults and perform root cause analysis.
