Controls & Instrumentation EngineerWe are seeking a Controls & Instrumentation Engineer to own the programming, commissioning, and lifecycle support of mission-critical facility automation systems within a high-volume semiconductor fabrication environment. This role is responsible for the SCADA platform, PLC fleet, and OT network underpinning the fab's Central Management System (CMS) and Fab Monitoring System (FMS). These systems control process cooling water, general exhaust, chillers, cooling towers, and cleanroom HVAC, as well as the life-safety gas and chemical monitoring infrastructure.
The ideal candidate is equally comfortable writing structured text logic at the controller level, architecting a multi-gateway SCADA platform, and coordinating commissioning activities on an active construction floor with multiple engineering and trade contractors.Your tasksSCADA Platform & OT Network AdministrationAdminister a multi-gateway Ignition SCADA environment, including redundant CMS/FMS production gateway pairs, an admin gateway, and development gatewaysLead version upgrade planning and execution across the gateway fleet, including Enterprise Administration Module (EAM) Controller/Agent topology and Remote Tag Provider architecture for dev-to-production tag consumptionDesign and maintain Perspective-based HMI screens and support Python/Jython scripting for automated reporting, alarming, and notification workflowsDiagnosing and resolving OT network issues affecting control communicationsMaintain OPC UA server/client architecture and certificate management between PLCs and the SCADA layerPLC Programming & Controls DevelopmentDevelop, test, and maintain control logic on Schneider Electric M251 and M580 platforms (EcoStruxure Machine Expert) for HVAC air handling/makeup air units, process utilities, and life-safety monitoring pointsAuthor control narratives and functional logic for system, including but not limited to HVAC, Process cooling water, Waste Water, etc..Configure and commission variable frequency drives and other motor equipment.Develop and maintain a site PLC hardware standard governing controller selection criterion for redundant vs. non-redundant systemsWrite and maintain Modbus TCP, OPC UA, and Ethernet/IP integration logic between PLCs, VFDs, and third-party devicesCommissioning & Project ExecutionLead startup and commissioning of cleanroom equipment under accelerated or constrained schedulesCoordinate commissioning activities across mechanical, electrical, and controls trade contractors to maintain project schedule and resolve field conflictsReview and provide technical feedback on engineering-of-record design packages, identifying discrepancies in control narratives, alarm tables, and sequence logic prior to constructionGenerate and maintain commissioning documentation, including startup checklists and test result recordsDocumentation, Standards & Cross-Functional CoordinationAuthor and maintain engineering specifications, control narratives, and standards documents for facility automation systemsServe as the controls point of contact for systems integrators, engineering-of-record firms, and equipment vendors throughout design review, procurement, and field installationDraft scope, change order, and technical correspondence to clarify design intent and resolve gaps between issued engineering packages and field conditionsSupport vendor and contractor coordination for SCADA integration scopes spanning hundreds of field devices and thousands of monitored data pointsYour profileBachelor's degree in Mechanical, Electrical, or Controls Engineering, or equivalent practical experienceHands-on PLC programming experience (Schneider Electric M251/M580 or comparable platforms such as Allen-Bradley, Siemens) using IEC 61131-3 languages (Structured Text, Ladder Logic)Production experience with an industrial SCADA platform (Inductive Automation Ignition preferred) including Perspective/Vision HMI development and gateway administrationWorking knowledge of industrial communication protocols: Modbus TCP, OPC UA, Ethernet/IPUnderstanding of OT network architecture, including VLAN segmentation, managed switch configurationExperience with control sequences and building/facility automation systemsStrong written communication skills for technical documentation and cross-team coordination with engineering, construction, and vendor partnersPreferred QualificationsExperience supporting a semiconductor fab, cleanroom, or other critical-infrastructure facility (life-safety monitoring, ultra-pure water, process cooling water systems)Familiarity with VFD configuration and commissioning (Danfoss, ABB, Allen Bradley or comparable)Experience with Ignition Enterprise Administration Module (EAM) and multi-gateway redundant architecturesExposure to building management system migrations (e.g., legacy BMS platforms to modern SCADA)Scripting experience in Python/Jython for SCADA automation and reportingContact & additional informationThis role will work on site in Roseville, CA.This position generally works Monday-Friday, additional hours as necessaryIndefinite US work authorized individuals only. Future sponsorship for work authorization unavailable.