About the JobAs Automation and Controls Engineer, you will play a key role in improving plant reliability, productivity, and safety through automation and process control technologies.
You will serve as the site's subject matter expert for process control and Operational Technology (OT), acting as a key link between local and regional teams.This is a hands‐on position where you will support and improve control systems, lead automation initiatives, and contribute to capital projects.
You will work closely with operations, maintenance, engineering, and general automation teams to ensure the site's systems remain reliable, efficient, and aligned with industry best practices.Location & EmploymentLos Reyes La Paz, State of Mexico (Mexico City Area).
This is a permanent, full‐time, fully on‐site role 5 days per week.ResponsibilitiesSupport and optimize the site's Process Control Systems (PCS), Safety Instrumented Systems (SIS), and data historian platforms.Own and improve Siemens‐based control systems across the plant.Troubleshoot and resolve issues related to PLCs, control logic, automation hardware, and industrial networks.Perform system maintenance activities including backups, software updates, hardware upgrades, and lifecycle management.Implement programming and configuration changes to improve plant performance, reliability, and operational efficiency.Act as the site's process control and automation expert, providing technical guidance and support to local teams.Support automation and OT projects from planning through execution; define technical requirements and support project scope development.Review technical solutions, vendor proposals, and project deliverables.Partner with operations, maintenance, engineering, and regional automation teams to drive continuous improvement initiatives.Develop and maintain the site's control system lifecycle strategy to ensure long‐term reliability and sustainability.Support alarm management processes, alarm rationalization activities,



and system optimization efforts.Maintain SIS systems and coordinate required Safety Instrumented Function (SIF) proof testing activities; ensure systems comply with applicable safety standards, engineering guidelines, and industry best practices.Support capital projects and automation upgrades across the site; participate in on‐call support as needed to help minimize production downtime and maximize plant performance.QualificationsBachelor's degree in Electrical Engineering, Automation Engineering, Mechatronics Engineering, Chemical Engineering, or a related technical field.Equivalent hands‐on experience in industrial automation and process controls may also be considered.At least 5years of experience in process control, automation, or controls engineering within manufacturing or process industries.Strong hands‐on experience with industrial control systems and automation technologies.Experience with Siemens PLCs, Simatic Manager, and related controller software.Experience designing, implementing, and supporting batch and continuous process control systems.Strong troubleshooting skills involving both control logic and hardware.Knowledge of PID control strategies and process optimization techniques.Experience supporting automation, controls, or OT projects.Ability to collaborate effectively across multiple teams and functions.Full professional fluency in both English and Spanish.Preferred QualificationsExperience within the chemical, specialty chemical, refining, or similar process industries.Exposure to Siemens control systems.Experience with Safety Instrumented Systems (SIS).
Familiarity with HAZOP, LOPA, and SIL methodologies.Experience with Statistical Process Control and alarm rationalization.Knowledge of industrial communication protocols such as Modbus, OPCUA, DeviceNet, and ControlNet.Familiarity with ISA standards, plant safety systems, and industry best practices.Working knowledge of SAPPM.Additional InformationThis role requires full fluency in English and is performed fully onsite.
The position is permanent, full‐time, and requires presence 5 days per week at our plant in LosReyes (LaPaz).
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📌 Controls Engineer (Sonora)
🏢 Nouryon
📍 Sonora