IoT Architect

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Job Title: IoT Architect – L3 (PLC / SCADA / IIoT)

Location: Houston, TX (Onsite/Hybrid as per client requirement)

Duration: 12+ Months

Job Description

We are seeking an experienced IoT Architect (L3) with strong expertise in industrial automation, OT/IT integration, and IIoT platforms. The ideal candidate will have deep hands-on experience in PLC, SCADA, HMI systems, industrial protocols, and enterprise integration for smart manufacturing environments.

Key Responsibilities

Design, implement, and support PLC, HMI, SCADA, and OPC UA-based systemsWork with industrial communication protocols including IEC 60870-5-101/104, DNP3, MODBUS, OPC standardsIntegrate industrial devices, machines, and equipment with MES systems for real-time data collection and analyticsAnalyze manufacturing processes to identify optimization and automation opportunitiesCollaborate with Engineering, Production, and IT teams to align MES solutions with business goalsPerform troubleshooting and root cause analysis (RCA) for PLC/SCADA/HMI systemsEnable automation of manual processes using PLCs and controllers for IIoT connectivityDesign and implement IT-OT integration solutions using Kepware, Ignition, and similar industrial connectorsWork on IIoT platforms for device monitoring, productivity tracking, anomaly detection, and utilization analysisManage incident handling, escalation, and resolution of infrastructure issuesPerform device lifecycle management, firmware updates, driver management, and connectivity troubleshootingCoordinate with OEMs and third-party vendors for issue resolutionEnsure system availability, monitoring, and health checks of industrial tools and platformsMaintain service catalog, inventory, and equipment qualification recordsConduct regular maintenance and update technical documentation

Required Skills & Experience

Strong experience in PLC, SCADA, HMI programmingHands-on expertise with OPC UA, IEC protocols (101/104), DNP3, MODBUSStrong understanding of networking: DNS, DHCP, Firewalls, Routers, GatewaysExperience with IoT protocols: MQTT, CoAP, AMQPExpertise in IT-OT integration and industrial middleware (Kepware, Ignition)Experience with MES integration and IIoT platformsKnowledge of industrial automation and manufacturing systemsStrong troubleshooting and RCA skills for OT environmentsExperience in service management and OT service operations

Preferred Qualifications

Experience in manufacturing or industrial automation environmentsKnowledge of enterprise monitoring and asset management toolsExposure to cloud-based IIoT architectures (AWS IoT, Azure IoT preferred)