Principal Mechanical Engineer, SAF Pilot Plant

PetsApp; Cambridge (MA); On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Competitive salary

Incentive Stock Options

Medical, dental, and vision benefits

401k match

Commuter benefits

Job summary

PetsApp seeks a Principal Mechanical Engineer to lead the mechanical design, engineering, and fabrication of a FOAK SAF pilot plant integrating DAC and electrolysis tech. You will own the electrolyzer mechanical architecture as the system moves from prototype to pilot, bridging electrochemical processes with industrial machinery.

You will lead a fast-paced team, mentor internal engineers, and manage external vendors to deliver robust, scalable industrial systems with a strong safety focus.

Qualifications

• MS in Mechanical Engineering required.
• 15+ years of progressive mechanical engineering experience with concept-to-field operation.
• Direct prior experience designing and scaling electrochemical systems or related multi‑phase tech.
• Deep fabrication knowledge: machining, welding, sheet metal, casting; GD&T.

Responsibilities

• Design, layout, and integration of the carbonate electrolysis system.
• Scale bench designs to a fully functional pilot plant (containerized/skid-mounted).
• Design piping, manifolds, and thermal management loops.
• Manage external EPCs, machine shops, and component suppliers.

Skills

CAD Mastery

FEA

3D modeling

Piping & valves

Vendor management

Cross-functional leadership

Safety mindset

Communication

GD&T

ASME B31.3 knowledge

Education

Master of Science in Mechanical Engineering

Tools

SolidWorks

PDM/PLM

Job description

PetsApp seeks a Principal Mechanical Engineer to lead the mechanical design, engineering, and fabrication of a FOAK SAF pilot plant integrating DAC and electrolysis tech. You will own the electrolyzer mechanical architecture as the system moves from prototype to pilot, bridging electrochemical processes with industrial machinery.

You will lead a fast-paced team, mentor internal engineers, and manage external vendors to deliver robust, scalable industrial systems with a strong safety focus.