Manufacturing Design Engineer (FreeCAD)

What you would do

• Build detailed parametric 3D models of mechanical components and assemblies in FreeCAD
• Create engineering drawings with GD&T, tolerances, and specifications for manufacturing handoff
• Apply design principles for sheet metal, CNC machining, plastics, and injection molding processes
• Validate CAD models for accuracy and manufacturability before production release
• Write technical documentation and assembly instructions for production teams

Who they want

• 2+ years of mechanical design experience in manufacturing environments
• Expert proficiency in FreeCAD or similar parametric CAD software
• Strong grasp of geometric dimensioning, tolerance specifications, and design-for-manufacturability best practices
• Hands-on experience with multiple manufacturing processes and their design constraints
• Strong written and verbal communication skills for technical documentation and collaboration

Main skills

What the interview asks about

1. 1.Parametric CAD modeling in FreeCAD

   Complex assemblies require understanding constraint-based design; competency determines efficiency and downstream model quality.

   For example: “You're modeling a sheet metal enclosure with ten internal components that must fit precisely. How would you structure the FreeCAD model hierarchy to make updates manageable?”

2. 2.GD&T and tolerance stack-up

   Proper tolerance specification directly impacts manufacturing feasibility and production cost; engineers must balance precision requirements with achievable tolerances.

   For example: “A part you designed returns from the machine shop with one dimension out of tolerance. How would you use GD&T principles to revise the drawing and justify the new tolerance?”

3. 3.Design for injection molding

   Injection molding has specific constraints on wall thickness, draft angles, and material flow; overlooking these causes expensive tooling failures.

   For example: “You're designing a plastic enclosure with snap-fit tabs and internal ribs. What design considerations for wall uniformity and draft angles would you incorporate?”

4. 4.Validation and manufacturability assessment

   Catching design issues before production prevents costly iterations; this requires both CAD accuracy and manufacturing process knowledge.

   For example: “During validation review, you identify that a 3mm hole specified for CNC drilling is positioned too close to an edge. How would you resolve this conflict?”

5. 5.Technical documentation for production

   Clear, accurate drawings and assembly instructions reduce manufacturing errors and rework; documentation quality directly impacts production schedule and quality.

   For example: “You're creating an assembly drawing for a sub-assembly with 25 parts. What views, section details, and manufacturing notes would you include to guide technicians?”

A task you may get

Model a multi-part assembly in FreeCAD based on a provided specification. Deliverables include parametric 3D model, engineering drawings with GD&T and tolerances, and written manufacturability assessment for assigned processes.

How to prepare

• Review GD&T fundamentals and practice tolerance stack-up analysis for a simple multi-part assembly
• Study design guidelines and constraints for two manufacturing processes like sheet metal and injection molding
• Practice creating a 3-part FreeCAD assembly with constraints and generating production-quality drawings
• Examine technical documentation examples from a manufacturing facility to understand clarity and completeness standards

The facts

Pay

$40–100/hr

Open to

Bangladesh, Hong Kong, India, Indonesia, Japan, Kazakhstan, Kyrgyzstan, Malaysia, Pakistan, Philippines, Singapore, Sri Lanka, Taiwan, Thailand, Uzbekistan, Vietnam, Austria, Belarus, Belgium, Denmark, France, Germany, Greece, Italy, Netherlands, Portugal, Russia, Spain, Switzerland, United Kingdom, Argentina, Brazil, Chile, Colombia, Mexico, Peru, Algeria, Bahrain, Egypt, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Palestine, Qatar, Saudi Arabia, Tunisia, United Arab Emirates, United States, Canada, Nigeria, Kenya, South Africa, Ghana, Ethiopia

Field

Applied Engineering

Role type

Expert

Posted

8/18/2026

Places left

50

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