Mechanical Engineer Internship

Who you are

• This is an opportunity for someone who wants hands-on ownership, exposure to industrial-scale hardware, and experience working in a fast-paced climate tech startup
• Pursuing a BS or MS in Mechanical Engineering (or related field) or have recently graduated
• Hands-on experience building things (lab work, shop experience, project teams, internships, personal projects)
• Strong understanding of engineering fundamentals (statics, dynamics, kinematics, thermodynamics, fluid mechanics)
• 3D CAD experience
• Engineering testing methodology; ability to design experiments and collect data
• Self-starter, critical thinker, and problem-solving skills
• Team player with excellent verbal & written communication and interpersonal skills
• Familiarity with formal engineering documentation (ANSI mechanical drawings, electrical schematics, Process & Instrumentation Diagrams)
• Hands-on fabrication experience: e.g. woodworking, machining, welding, etc
• Mechatronics systems experience (e.g. Arduino, Raspberry Pi or similar with motion components)
• Familiarity with kinematic systems (e.g. gears, belts, leadscrews, linkages, etc.)
• Experience on robotics, solar car, formula SAE, or similar engineering teams
• You don’t have to have every listed requirement and skill to be a great fit. If you are passionate about this opportunity and think you have the skills to succeed, please apply!

What the job involves

• We are seeking a Mechanical Engineering Intern to join Heirloom’s Mechanical Team for the upcoming Fall/Winter for a 10-12 week internship
• In this role, you will support the design, build, and deployment of next-generation carbon removal systems
• Depending on your strengths and team priorities, you may:
• Support mechanical design of subsystems and components (structures, mechanisms, machine design)
• Develop CAD models and 2D drawings for fabrication
• Assist with prototyping, assembly, and field testing of hardware
• Conduct engineering analyses (tolerance stacks, FEA, etc.)
• Support root cause investigations and design improvements on equipment
• Help document designs, test results, and lessons learned
• Collaborate cross-functionally with process, electrical, controls, and operations teams
• You’ll leave the internship having directly contributed to hardware that captures CO₂ from the atmosphere
• Internship Duration: 10-12 weeks (6 month co-ops also will be considered)

The application process

• Start date: Anytime between September 2026 and January 2027