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://mantelcapture.com/
This role requires 1-2 years of FULL-TIME travel (or relocation) to Trois-Rivieres, Quebec and can transition to a remote job after that.
What You’ll Do Demonstration Project Support
Support engineering execution on-site from test plan through steady-state operation
Translate P&IDs;, process designs, and engineering packages into installed, commissioned systems in the field
Manage day-to-day technical activities on-site: contractor coordination, punch lists, field modifications, and issue resolution
Monitor system performance against design intent and flag technical issues clearly and quickly
Site Relationships & Coordination
Serve as Mantel's day-to-day engineering point of contact with the host site and its technical teams, alongside the Commissioning Director
Coordinate with EPC contractors, equipment vendors, and host-site operations staff
Maintain a safe, professional, and collaborative site environment at all times
Documentation & Reporting
Maintain accurate site records: as-builts, field change notices, commissioning logs, and performance data
Produce clear, concise site updates and engineering reports for the VP of Engineering and broader project team
Feed lessons learned back into the engineering base for future deployments
Performance Monitoring & Feedback
Support data collection and system monitoring for technical validation of the demonstration




Surface field observations and operational insights that inform design refinement and scale-up
Work closely with the engineering team to close the loop between design intent and real-world performance
Who You Are Experience: 6+ years in process, mechanical, or chemical engineering with hands-on site or field engineering experience, including at least one commissioning or startup campaign
Education: B.Eng. or B.S. in Chemical, Mechanical, or Process Engineering
Legal to work in either the United States or Canada
Put differently,
You’ve been in office during startup/turnarounds and know what it takes to get a system running - you don't need someone to walk you through it
You read drawings, write procedures, and close punch lists - your documentation is clean and complete
You're comfortable working in industrial environments alongside operators, contractors, and plant engineers
You think on your feet when things go sideways, and you communicate problems clearly
You have genuine curiosity about carbon capture and the role industrial decarbonization plays in reaching net zero
What You'll Get: What You'll Get: A central role in building one of the most exciting carbon capture companies in the world
Meaningful technical contribution from day one, with growing scope as the project portfolio expands
Close collaboration with a small, high-caliber engineering and commercial team
A clear path toward senior engineering leadership as Mantel scales
We provide competitive and holistic compensation to all our full-time team members, including:
Highly competitive pay based on experience, including equity
90% subsidized medical and dental healthcare coverage for employees, 50% for dependents
Unlimited vacation policy, mental health personal days, generous sick leave, plus a week-long winter break at the end of December
Health/Fitness and cell phone stipend
Paid parental leave

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📌 Site Engineering Manager (Quebec City)
🏢 Mantel
📍 Quebec City