Process Operator - Contractor

Mantel; California; On-site; USD 47,000 - 64,000; Full time

Job summary

Mantel seeks a Contract Process Operator to support commissioning, startup, and ongoing operation of our high-temperature carbon capture demonstration plant (D-1). This onsite, safety-critical role requires industrial operating experience and leads plant performance in a live environment.

You will work with engineering and commissioning teams, operate pumps and heat exchangers, and manage process parameters while following safety protocols and shift schedules, including nights and weekends.

Qualifications

• Minimum 5+ years in industrial plant operations.
• Experience with commissioning/start-up and process safety.
• Strong understanding of DCS/PLC and standard operating practices.
• Excellent communication, decision-making, and leadership under pressure.
• Ability to work rotating shifts, including nights and weekends, on a demonstration project.

Responsibilities

• Operate and monitor process equipment including pumps, heat exchangers, piping systems, valves, and control systems.
• Perform field rounds, equipment inspections, and operational checks.
• Execute startup, shutdown, and normal operating procedures.
• Monitor process parameters and escalates deviations.
• Record operating data and maintain accurate shift logs.
• Assist in pre-commissioning checks and system turnover.
• Support functional testing and troubleshooting.
• Work closely with engineering and commissioning teams to validate system performance.
• Follow all site safety policies, PPE requirements, and permit-to-work procedures.
• Identify and report near misses, hazards, and unsafe conditions.

Skills

Plant operations

DCS/PLC

Leadership under pressure

Shift work

Tools

DCS/PLC

Job description

Mantel is developing the first molten-salt-based carbon capture technology which is designed to operate at the high temperatures found inside boilers, kilns, and furnaces - enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industries to reduce emissions and achieve net-negative emissions. By solving for efficiency Mantel can cut costs substantially, unlocking carbon capture's role in reaching net zero emissions by 2050. To learn more, go to: https://www.mantelcapture.com/

Mantel is seeking a Contract Process Operator to support commissioning, startup, and ongoing operation of our high-temperature carbon capture demonstration plant (D-1). This role is critical to safe, reliable plant performance and requires strong industrial operating experience in power generation, oil & gas, chemical processing, or similar heavy industry.

This is an onsite, safety-critical position working in a live industrial environment.

Key Responsibilities

Plant Operations

• Operate and monitor process equipment including pumps, heat exchangers, piping systems, valves, and control systems
• Perform field rounds, equipment inspections, and operational checks
• Execute startup, shutdown, and normal operating procedures
• Monitor process parameters and escalates deviations
• Record operating data and maintain accurate shift logs

Commissioning & Startup Support

• Assist in pre-commissioning checks and system turnover
• Support functional testing and troubleshooting
• Work closely with engineering and commissioning teams to validate system performance

Safety & Compliance

• Follow all site safety policies, PPE requirements, and permit-to-work procedures
• Identify and report near misses, hazards, and unsafe conditions

Minimum Qualifications

• Minimum 5+ years in industrial plant operations
• Experience with commissioning/start-up, process safety, and high-temperature systems is an asset.
• Strong understanding of process control systems (DCS/PLC) and standard operating practices.
• Excellent communication, decision-making, and leadership skills under pressure.
• Ability to work rotating shifts, including nights and weekends, in a demonstration project environment.

Desired Qualifications

• Experience with high-temperature industrial processes, or boiler/steam systems
• Bilingual English / French

Location

Location: This is a site-based role in Trois Rivieres, Quebec.