Mechanical Engineer Onsite; Billerica, MA)

Fabri is seeking a Mechanical Engineer to design and build the equipment that powers every step of our casting process. You will own mechanical systems from concept to commissioned hardware, working closely with process engineers and senior engineering staff to turn process requirements into machines that perform on the production floor.
This role suits a mid-level engineer with hands-on equipment design experience who is ready to take on broader technical ownership. Your work will directly shape Fabri's throughput and scalability as we grow.

We are an early-stage investment casting startup building a fully integrated digital foundry. Our mission is to deliver precision metal castings with unparalleled speed and cost-effectiveness. By leveraging our exclusive high-throughput additive manufacturing process and AI-driven design software, we deliver castings in days, saving our customers critical time and money. We are well capitalized and backed by top-tier investors and major customers, with significant funding raised in the past year.

We have shipped our first customer parts and generated significant commercial interest in both the aerospace and industrial sectors.

Fabri is located in the greater Boston area. During this startup phase and for the foreseeable future, all employees work on-site and take an active part in building and operating the end-to-end process.

• Support build vs. buy decisions with performance analysis and cost estimates

• Develop custom manufacturing equipment and subsystems, from requirements definition through detailed design

• Translate process requirements into mechanical designs, and use equipment capabilities to open new process regimes

• Fabricate and assemble equipment hands-on, from machined components to fully integrated systems

• Commission new equipment on the shop floor and bring it into production

• Write test plans and run acceptance testing before equipment enters production

• Troubleshoot equipment failures to root cause and implement fixes

• Design guarding and interlocks into equipment, informed by hazard analysis

• Design fixtures and material handling systems that move parts between process steps

• Produce detailed drawings with GD&T and tolerance stack-ups for machined and fabricated components

• Track requirements and interfaces across tightly coupled subsystems, and assess the downstream impact of design changes

• Integrate sensors and actuators into equipment designs to support automation

• Design equipment for manufacturability and maintainability as Fabri scales throughput

• Present designs at stage-gated technical reviews and document design rationale

Even if you don't meet every qualification, we encourage you to apply. We value curiosity, problem-solving skills, and strong fundamentals.

• Bachelor's degree in Mechanical or Aerospace Engineering (or a closely related field)

• 2 to 5 years designing and building equipment or vehicle systems

• Proficiency in Autodesk Inventor or a similar CAD platform, with strong GD&T and DFM skills

• A track record of taking equipment from CAD to functioning hardware

• Hands-on experience machining and fabricating components, and assembling equipment on the shop floor

• Experience sourcing components and working with machine shops and fabrication vendors

• Solid fundamentals in heat transfer and machine design

• A habit of questioning requirements and assumptions

• Clear written and verbal communication of technical decisions

• Comfort with high ownership and ambiguity in fast-moving startup environments

• Experience designing equipment for high temperatures, pressures, or vacuum, or for molten and corrosive materials

• Background in manufacturing equipment or industrial automation

• Aerospace hardware experience, such as propulsion systems or turbo machinery

• Experience scaling hardware systems for throughput and reliability

• Experience with pneumatic and hydraulic systems

• Familiarity with control systems and basic programming

• Familiarity with machine safety standards and risk assessment

• Design and build first-of-its-kind equipment for a new manufacturing process.

• Work directly with process engineers and operators on the production floor.

• Own high-impact mechanical systems at an early-stage company.

• See the equipment you design running in production.

• Help reshore critical U.S. manufacturing capability.

• Competitive salary and meaningful equity, with strong growth potential.

Fabri is not able to provide visa sponsorship for this position.
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