Senior Mechanical Engineer

Bolder Industries is redefining the rules of sustainable manufacturing. We deliver traceable, mass-balanced circular solutions for the rubber, plastics, and petrochemical sectors — transforming end-of-life tires into high-value materials used by global brands across more than 3,000 applications.

With proven technology, a strong commercial track record, and rapid global growth, Bolder leads the industry in circularity at scale. Executives join for the mission and stay for the people. We have a bold, collaborative culture driven to make a difference.

If you’re ready to lead innovation and scale global impact, this is where bold ideas meet real results. Bolder Industries is ISO 9001 certified and holds a Silver EcoVadis rating. Visit www.bolderindustries.com to learn more. 

Position: Senior Mechanical Engineer

Location: Carmel, IN

Type: Full-Time

We're seeking a Senior Mechanical Engineer to lead the mechanical and equipment design for our advanced pyrolysis plants—including critical systems like pyrolysis reactors, heavy oil condensing, and carbon finishing units.

This is a high-impact role supporting the completion of an ongoing brownfield project and driving forward a new greenfield initiative. You'll play a key part in scaling and commercializing cutting-edge clean tech.

●     Develop the design basis for key process equipment (pyrolysis reactors, condensing systems, etc.)

●     Lead design, scale-up, and fabrication of mechanical systems central to our proprietary process technology

●     Create detailed mechanical designs aligned with process targets: yield, throughput, runtime, and quality

●     Work cross-functionally with internal teams and external consultants/contractors to execute design deliverables

●     Serve as the Owner’s Mechanical Lead during FEED and EPC phases—reviewing PFDs, P&IDs, equipment data sheets and specifications, RFQs, and more

●     Review and approve complex engineering analysis: stress, thermal, FEA, and CFD simulations

●     Develop equipment specifications (pumps, heat exchangers, valves, etc.) and define QA/QC processes for fabrication and procurement

●     Support upgrades and revamps at existing operating facilities, collaborating closely with Operations and Maintenance teams

●     Ensure compliance with industry codes and standards (ASME, API, TEMA, etc.), especially relevant to the pyrolysis industry

●     Troubleshoot and resolve mechanical issues in field operations, from construction to commissioning

●     Bachelor’s degree in Mechanical Engineering

●     12 years of experience in mechanical/equipment design within oil & gas, gasification, or pyrolysis industries

●     Strong background in pressure vessels, heat exchangers, pumps, compressors, and piping systems

●     Advanced skills in interpreting and creating PFDs, P&IDs, GA drawings, and layout designs

●     Experience as owner’s lead engineer in an EPC environment

●     Deep understanding of industry codes (ASME, ASTM, API, TEMA)

●     Proficiency in FEA/CFD modeling and tools like AutoCAD, Caesar-II, SolidWorks, ANSYS

●     Hands-on experience supporting field design, construction, startup, and commissioning

●     Excellent problem-solving and communication skills

●     Detail-oriented with a strong quality mindset

●     Proven ability to lead projects and work within cross-disciplinary teams

●     Bonus: Knowledge of bulk solids handling and pneumatic system design

We offer a competitive, people-first benefits package that supports your success:

·      Career Growth: Training and development programs

·      Employee Recognition: Real-time appreciation with personalized rewards

·      Time Off: Generous PTO and paid sick leave

·      Comprehensive Insurance: Medical, dental, and vision for employees and families

·      Security: Short-term/long-term disability and life insurance at no cost to employee

·      Retirement: 401(k) participation

We believe diversity drives innovation. Bolder Industries is proud to be an Equal Opportunity Employer. We welcome applicants from all walks of life and prohibit discrimination of any kind—race, color, religion, gender identity, sexual orientation, age, national origin, disability, veteran status, or any other protected status.

***We will not respond to recruiters***