Principal Instrumentation & Control Engineer

Zachry Group

Principal I&C Engineer leading the design and execution of instrumentation and control systems for oil and gas projects. Driving engineering excellence across upstream, midstream, and downstream sectors.

Posted 6/22/2026full-timeDowners Grove • Illinois • 🇺🇸 United StatesLead💰 $165,900 - $237,345 per yearWebsite

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

Lead the design and specification of instrumentation and control systems including DCS, PLC, SIS, and SCADA systems.
Provide technical oversight for all I&C deliverables, ensuring alignment with client requirements, industry codes, and Zachry standards.
Serve as the primary technical authority for complex and critical control systems, including safety instrumented systems (SIS) and process control strategies.
Review and approve key engineering documents such as instrument datasheets, control narratives, loop diagrams, cause & effect matrices, and P&IDs.
Support all phases of projects (FEED, detailed engineering, procurement, construction, commissioning, and startup).
Collaborate closely with process, mechanical, electrical, and operations teams to ensure integrated system performance.
Interface with clients, vendors, and contractors to resolve technical issues and ensure successful project delivery.
Lead design reviews (HAZOP, SIL, LOPA) and ensure compliance with safety and regulatory requirements.
Ensure designs comply with industry standards and codes including ISA, IEC, API, NFPA, and OSHA regulations.
Support cyber security requirements for industrial control systems (ICS).

Requirements

What you’ll need

Bachelor’s degree in Chemical Engineering, Electrical Engineering, Instrumentation Engineering, or related field (required)
15+ years of experience in instrumentation and control engineering within the oil & gas or petrochemical industry or power industry.
Extensive experience with refinery, LNG, gas processing, or pipeline control systems
Proven experience leading large-scale EPC or EPCM projects
Professional Engineer (PE) license (Preferred)
Strong knowledge of DCS/PLC platforms (e.g., Honeywell, Emerson DeltaV, Yokogawa, Siemens, Rockwell)
Expertise in SIS design and SIL determination (IEC 61511 / IEC 61508)
Instrument selection and specification (pressure, flow, level, temperature, analyzers)
Control valve sizing and performance analysis
Industrial networking and communication protocols (Modbus, Profibus, Ethernet/IP, OPC)
Familiarity with IIoT, advanced process control (APC), and digital transformation initiatives

Benefits

Comp & perks

medical
dental
vision
life insurance
disability coverage
401(k) Retirement Savings Plan

ATS Keywords

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Hard Skills & Tools

instrumentation and control systemsDCSPLCSISSCADASIS designSIL determinationinstrument selectioncontrol valve sizingindustrial networking

Soft Skills

technical oversightcollaborationclient interfaceproblem resolutionleadership

Certifications

Bachelor’s degree in Chemical EngineeringBachelor’s degree in Electrical EngineeringBachelor’s degree in Instrumentation EngineeringProfessional Engineer (PE) license