Control System Engineer

This position is an embedded, on-site role supporting refinery PLC systems. The engineer will work directly with the client’s control systems team and is responsible for maintaining, troubleshooting, and improving PLC-based control systems across the facility.

The role requires strong technical capability, ownership of system reliability, and the ability to operate effectively with minimal direction in a live operating environment.

• Maintain and support refinery PLC systems to ensure safe and reliable operation
• Troubleshoot and resolve field issues in real time
• Modify and update PLC logic to support project and operational changes
• Perform firmware upgrades and minor hardware upgrades for legacy systems
• Support MOC processes and ensure compliance with site standards
• Participate in system testing, loop checks, cutovers, and startup activities
• Work closely with operations, maintenance, and client engineering teams
• Identify gaps, inefficiencies, or risks and proactively address them
• Effectively utilize time during low workload periods to improve systems, documentation, or standards.
• Respond to callouts as needed and scheduled.

• Strong troubleshooting skills in operating industrial environments
• Able to work safely and effectively in a refinery setting
• Self-directed and proactive; does not rely on constant task assignment
• Comfortable working as part of a client-integrated team
• Strong sense of ownership and accountability for system performance
• Able to interpret and apply facility standards and system philosophies

• PLC / HMI Programming:
• PLC programming (Allen Bradley CLX, Compact Logix, SLC, and PLC5 are required)
• HMI programming (Panel View is required)
• Logic Solver programming (Triconex Platform preferred, plus others)
• Familiarity with P&IDs, Logic Diagrams, Cause / Effect matrices, and Functional Narratives
• Startup assistance/troubleshooting
• DCS Exposure (preferred)
• Honeywell Experion
• Safety Systems (is a plus):
• Triconex, Safety Manager, or similar logic solvers

Safety:
Is proactive in all safety matters and displays an enthusiasm for safety.

Attitude:
Exhibits a positive attitude, shows initiative, and accepts direction from qualified sources; demonstrates dependability and commitment to Mangan projects.

Teamwork:
Interacts well, cooperates with coworkers on the team, and shows respect for all team members.

Quality:
Work meets or exceeds the company quality standard; ability to multi-task.

Knowledge:
Displays the ability to perform the challenging technical skills required for the project.

Communication:
Effectively and respectfully communicates on all levels, both written and oral, with all clients, vendors, and Mangan staff.

Problem-Solving

Skills:

Analyzes problems and reaches acceptable and workable solutions

Decision Making:
Displays the willingness and judgment to make decisions; take actions upon decisions made with good judgment

• Competitive salary with a discretionary bonus for hours worked in excess of 80 hours in a two-week pay period
• Benefit Time Off (BTO) that can be used as paid vacation, sick time, holiday funding, or can be taken as cash