Controls Engineer - Irving, TX

Nippon Sanso Matheson, Inc.; Irving (TX); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Bonus plan

Job summary

Nippon Sanso Matheson, Inc. seeks a highly skilled Controls Engineer to support automation, plant operations, and control systems maintenance across our air separation facilities in Irving, TX.

You will diagnose issues, optimize uptime, and implement compliant logic changes within a regulated continuous-process environment. The role requires hands-on PLC/SCADA expertise, strong documentation discipline, and collaboration with operations, safety, quality, and engineering teams to sustain safe,

Qualifications

• ABET-accredited engineering degree or 10 years equivalent control systems experience.
• 5 years with degree, 10 years without in control systems programming and industrial automation.
• Experience with ASUs or similar cryogenic/chemical processes including compressors and distillation columns preferred.
• Experience within strictly regulated manufacturing environments using formal MOC or validated control protocols preferred.

Responsibilities

• Support 24/7/365 continuous plant operations by providing timely technical assistance for control system needs.
• Execute day-to-day PLC/SCADA programming updates and logic modifications per coding standards.
• Modify PLC wiring diagrams, P&IDs, and control narratives to support safe automation.
• Follow MOC protocols, complete risk assessments and documentation prior to deployment.
• Maintain validated state of plant control systems with test plans and modifications.
• Lead local root-cause investigations and implement CAPAs.
• Monitor OT assets to ensure high availability of SCADA terminals and data history.
• Collaborate with operations, safety, quality, and engineering teams to resolve issues.

Skills

PLC/SCADA troubleshooting

Siemens SIMATIC S7

SIMATIC S5/CTI

Allen-Bradley

HMI Visualization

OPC UA / MODBUS / PROFINET

MOC processes

IQ/OQ/PQ validation

Education

ABET-accredited engineering degree

Tools

Inductive Automation Ignition

Siemens WinCC

SIMATIC HMI

Job description

ControlsEngineer
JOB SUMMARY

We are seekinga highly skilled Controls Engineer to support the automation, daily operations,and control systems maintenance across our air separation plants. In this role,you will diagnose technical issues, optimize system uptime, and implement safe,compliant logic modifications within a continuous-process manufacturingenvironment. The ideal candidate blends solid technical proficiency inPLC/SCADA troubleshooting with a proactive approach to maintaining systemstability and operational safety. This role is based out of the Irving, TXoffice.

EssentialFunctions

• Support 24/7/365 continuous plant operations by providing timely technical assistance for control system needs, rapidly troubleshooting logic/hardware anomalies to minimize production downtime.
• Execute day-to-day plant PLC/SCADA programming updates and logic modifications in strict adherence to company-wide coding standards and documentation practices.
• Effectively interpret and modify PLC wiring diagrams, P&IDs, control narratives, and logic diagrams to support the safe automation of plant operations.
• Follow strict Management of Change (MOC) protocols for all local control system modifications, completing detailed risk assessments and documentation prior to deployment.
• Help maintain the validated state of plant control systems by executing standard test plans and ensuring all logic changes comply with medical product manufacturing regulations.
• Lead local root-cause investigations into control system failures or operational anomalies, implementing approved corrective and preventive actions (CAPAs).
• Monitor local plant Operational Technology (OT) assets, ensuring high availability of SCADA terminals, reliable data historization, and adherence to basic cybersecurity procedures.
• Collaborate cross-functionally with plant operations, safety, quality, and corporate engineering teams to resolve operational issues and sustain smooth production.

Required forAll Jobs

• Performs other duties as assigned
• Complies with all policies and standards

QUALIFICATIONS

Education

Bachelor’sdegree in Engineering from an ABET-accredited university (Electrical, Chemical,Automation/Control Systems, Mechanical, or closely related technicaldiscipline) OR 10 years of equivalent control systems engineering experience ispreferred

WorkExperience

• 5 years withdegree, 10 years without. Experience in control systems programming, industrialautomation, or operational technology within a continuous-process manufacturingenvironment is required
• 1+ yearshands-on experience working with air separation units (ASUs) or similar highlycontinuous cryogenic/chemical processes including compressors and distillationcolumns is preferred.
• 1+ yearsworking within strictly regulated manufacturing environments utilizing formalManagement of Change (MOC) or validated control protocols (FDA/medical-grade)is preferred.

Knowledge,Skills and Abilities

• Technical proficiency in multiple PLC platforms, including Siemens SIMATIC S7, SIMATIC S5/CTI, and Allen-Bradley.
• Experience developing PLC logic in multiple languages, including ladder logic, structured text, and VBScript.
• Solid understanding of multiple HMI/visualization platforms including Inductive Automation/Ignition, Siemens WinCC, and SIMATIC HMI.
• Familiarity with networking and communication protocols including OPC UA, MODBUS RTU/TCP, PROFINET, and others.
• Practical knowledge of Management of Change (MOC) processes and rigid change-control frameworks within strictly regulated manufacturing environments.
• Basic understanding of control system validation protocols (IQ/OQ/PQ) required to maintain a validated state for software, hardware, and logic modifications.
• Familiarity with ASU-specific equipment like turbo-expanders, cryogenic pumps, and adsorption pretreatment units.
• Strong technical and analytical proficiency with the ability to multi-task effectively, communicate clearly, and thrive in a team environment.

PHYSICALDEMANDS/WORKING CONDITIONS

• WorkingCondition: This role will be performedprimarily in an office environment, requiring extensive daily usage of acomputer, and other office equipment.
• WorkingCondition: This role supports 24/7operations and requires occasional night and/or weekend remote support.
• WorkingCondition: Field Coverage willpotentially occur wherever Matheson has a facility, and during any season.
• PhysicalDemands: Occasionally lift and/or moveobjects up to 50 pounds.
• PhysicalDemands: Specific vision abilitiesrequired include close vision, distance vision, depth perceptions, and theability to adjust focus.
• WorkingCondition: This role will be performed inoffice environments as well as in industrial field environments. Whileperforming duties of this job it would occasionally be required to:
• Be exposed to moving mechanical partsand extreme cold (e.g. operating plant).
• Be exposed to outside weatherconditions (e.g. cold box valves, filling trailers).
• Be exposed to high, precarious places(e.g. cold box, repair work)
• Be exposed to high noise levels (e.g.Plant rounds, maintenance)
• WorkingCondition: May also be required to workfrom a home location, which must be conducive to performing the role andduties, including virtual/video meetings.
• WorkingCondition: Must sign NDA, have a cleandriving record and pass background check and drug test.

TravelRequirements Estimated AmountBrief Description

25% PotentialField Coverage

Pay range$120,000 to $150,000 annually + eligible to participate in bonus plan

The Company is an Equal Opportunity Employer that complieswith the laws and regulations set forth under EEOC. All qualified applicants will receiveconsideration for employment without regard to race, color, religion, sex,sexual orientation, gender identity, national origin, disability or protectedveteran status. EOE AAM/F/VET/Disability