Mechanical Engineer jobs in United States

Responsible Energy Inc. is tackling one of the world’s most urgent environmental challenges: the destruction of PFAS ("Forever Chemicals"). Using our proprietary, multi-patented Free Radical Gasification (FRG) technology, we are redefining hazardous waste management and setting new standards for environmental sustainability.

Headquartered in Maitland, Ontario, Canada, Responsible Energy is a purpose-driven organization combining innovation, sustainability, and collaboration. Our vision is to change the way the world sees waste, and our mission is to permanently eliminate PFAS and other hazardous contaminants without the need for dilution by advancing Free Radical Gasification (FRG) as the global standard for safe, scalable, and regulation-ready PFAS destruction.

Job Summary

Responsible Energy Inc. is seeking a senior-level Mechanical Engineer to support the continued development, optimization, and deployment of our proprietary Free Radical Gasification (FRG) technology. This position plays a key role in ensuring our systems remain technically advanced, operationally reliable, and fully compliant with environmental and regulatory standards as commercial adoption accelerates.

Based at our Maitland, Ontario facility, this is a hands-on, execution-driven role suited to a candidate with deep expertise in mechanical system design, high-temperature process equipment, and project delivery. Responsibilities include leading internal and external resources, overseeing procurement and contractor coordination, and driving system troubleshooting and continuous improvement. Given the regulatory and operational context of our work, preference will be given to candidates with significant professional experience in Canada. This position will serve as a senior technical contributor within the R&D team, directly influencing the evolution of our operational FRG unit and the design of next-generation configurations.

Key Responsibilities

• Provide senior technical leadership in the mechanical design, optimization, and implementation of FRG systems
• Manage R&D initiatives related to system upgrades, performance tuning, and reliability engineering
• Lead end-to-end execution of mechanical workstreams including planning, documentation, procurement, fabrication oversight, and commissioning
• Source and specify mechanical components, coordinate procurement activities, and manage relationships with suppliers and contractors
• Oversee field integration, conduct system testing, and implement mechanical improvements based on empirical performance data
• Develop and maintain engineering packages including BOMs, P&IDs, drawings, and technical documentation in compliance with safety and regulatory standards
• Collaborate with internal engineering, operations, and compliance teams to ensure technical objectives align with commercial priorities

Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering or a closely related discipline with a very strong mechanical systems focus (required)
• Minimum 10 years of mechanical engineering experience, with over 5 years in industry, specifically in areas such as industrial process equipment, environmental systems, or comparable applied technologies. Academic research experience alone does not meet this requirement
• Experience within the Canadian regulatory and industrial environment is strongly preferred
• Strong background in hands-on mechanical design, testing, and field implementation
• Proven experience managing technical projects, coordinating external vendors, and delivering results on schedule
• Solid knowledge of thermodynamics, fluid dynamics, heat transfer, and mechanical reliability
• Proficiency in Autodesk Inventor or SolidWorks, AutoCAD, Microsoft Excel, Microsoft Teams, and standard engineering tools for design, simulation, documentation, and project planning
• Strong technical writing and documentation skills, with the ability to generate regulatory-grade records
• Comfortable leading field-level troubleshooting and participating directly in R&D testing and commissioning activities

Compensation

• Full-time, senior-level role based in Maitland, Ontario
• Starting salary range of CAD $105,000 to $115,000, with potential for higher compensation based on experience and qualifications
• Comprehensive health and dental coverage
• Life and disability insurance
• Paid vacation and statutory holidays
• Professional development support
• Flexible work environment where appropriate
• Opportunity to contribute to cutting-edge environmental technology with global relevance

Why Join Responsible Energy Inc.?

• Join a commercially active clean-tech company delivering a proven PFAS destruction technology
• Work in a mission-aligned environment focused on solving an urgent global contamination challenge
• Lead the technical evolution of an advanced thermal technology with planned global deployment
• Collaborate with a cross-functional team of engineers, scientists, and industry veterans
• Contribute to a business with a clear path to grow

How to Apply

Please submit your resume and cover letter to careers@Responsible.Energy, referencing ID #HR-25-008. Applicants will be asked to confirm their years of engineering experience, highest level of education, and eligibility to work in Canada.