Controls Engineer

Nouryon; Los Reyes Acaquilpan; On-site; MXN 800,000 - 1,200,000; Full time

Job summary

Nouryon is seeking an Automation and Controls Engineer to strengthen plant reliability and efficiency in the Los Reyes La Paz site. You will be the site subject‑matter expert for process control and OT, interfacing with regional teams and supporting capital projects.

This onsite role requires hands‑on work across PCS, SIS, and data historian platforms, with collaboration across operations, maintenance, engineering, and global automation teams to ensure safe, reliable, and compliant operations.

Qualifications

• Bachelor's degree or related technical field in engineering.
• 5+ years in process control, automation, or controls engineering.
• Strong hands-on experience with industrial control systems and automation technologies.
• Experience with Siemens PLCs, Simatic Manager, and related software.
• Ability to troubleshoot control logic and hardware; knowledge of PID control.

Responsibilities

• Support and optimize PCS, SIS, and data historian platforms.
• Own and improve Siemens-based control systems across the plant.
• Troubleshoot PLCs, control logic, and automation hardware.
• Perform maintenance: backups, software updates, hardware upgrades.
• Define requirements and support project scope; review vendor proposals.

Skills

Electrical Eng

Automation Eng

Process control

Siemens PLCs

Simatic Manager

PID control

Batch & continuous

Troubleshooting

OT projects

English & Spanish fluent

Education

Bachelor's degree in Electrical Engineering or related field

Equivalent hands‑on experience in automation may be considered

Tools

Siemens SIMATIC

Modbus

OPC UA

Job description

At Nouryon, we create innovative and sustainable solutions for our customers to answer society’s needs – today and in the future.

We are looking for team members who bring ideas forward, champion others and work together to do better. Does that sound like you?

About the Job:

As 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 global automation teams to ensure the site's systems remain reliable, efficient, and aligned with industry best practices.

Location:

Los Reyes La Paz, State of Mexico (Mexico City Area)

This position is fully onsite, 5 days per week.

Candidates must be fully fluent in English.

In your future role as Automation and Controls Engineer, you will:

• Support 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 Operational Technology (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

We Believe You Bring:

• Bachelor'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 5 years 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 Operational Technology (OT) projects
• Ability to collaborate effectively across multiple teams and functions
• Full professional fluency in both English and Spanish

Preferred Qualifications

• Experience 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, OPC UA, DeviceNet, and ControlNet
• Familiarity with ISA standards, plant safety systems, and industry best practices
• Working knowledge of SAP PM

Good to know:

This is a permanent, full-time, fully on‑site role 5 days/week at our plant in Los Reyes (La Paz).

For more information about our hiring process, visit: nouryon.com/careers/how-we-hire/

We look forward to receiving your application!