Remote | Senior Mechanical Design Engineer — $40–$90/hour

24-MAG LLC connects experienced professionals with remote consulting opportunities across technical, evaluation, and project-based workstreams. The company is seeking an experienced Senior Mechanical Design Engineer to analyze complex CAD assemblies, develop and validate challenging engineering questions, review AI-generated mechanical reasoning, and document precise technical findings.

Responsibilities:

• Analyse complex multi-part mechanical assemblies
• Identify critical design decisions and engineering constraints
• Evaluate component relationships, interfaces, and assembly intent
• Identify potential failure points requiring expert judgement
• Apply practical mechanical-design reasoning beyond drawing interpretation
• Formulate challenging mechanical-design questions from CAD models
• Focus on non-obvious problems requiring senior-level engineering judgement
• Develop questions involving assemblies, mechanisms, tolerances, and constraints
• Avoid trivial or purely visual questions
• Ensure questions are technically meaningful and answerable
• Validate answers directly against underlying CAD models
• Document exact and defensible engineering conclusions
• Maintain clear traceability between questions and model evidence
• Identify relevant dimensions, constraints, and geometric relationships
• Ensure answers remain precise and technically reproducible
• Review AI-generated responses to mechanical-engineering questions
• Identify breakdowns in design intent or assembly reasoning
• Evaluate mechanism and kinematic interpretation
• Flag incorrect GD&T or tolerance assumptions
• Recommend targeted improvements to technical reasoning quality
• Identify ambiguous, trivial, or unanswerable questions
• Refine technical prompts for clarity and precision
• Document edge cases and legitimate sources of disagreement
• Communicate findings through clear professional documentation
• Support consistent quality standards across evaluation workflows

Requirements:

• 5+ years of professional mechanical-design experience
• Experience creating and overseeing multi-part assemblies from concept
• Strong ability to make original mechanical-design decisions rather than working only from existing drawings
• Mastery of at least one major parametric CAD platform
• Deep expertise in design intent and assembly reasoning
• Strong mechanism and kinematic analysis capabilities
• Advanced understanding of GD&T and tolerance judgement
• Experience identifying design constraints and failure modes
• Strong technical reasoning across complex mechanical systems
• Experience teaching, mentoring, leading design reviews, or coaching engineering teams
• Exceptional written English communication skills
• Strong ability to document technical reasoning precisely
• Experience in industrial machinery, automation, robotics, automotive, heavy equipment, aerospace, defence, medical devices, consumer products, tooling, or fixture design
• FreeCAD experience is advantageous
• Advanced tolerance analysis or formal design-review leadership is advantageous