Senior Mechanical Design Engineer

AI Trainer Jobs; United States; Remote; USD 55,000 - 124,000; Part time

Job summary

micro1 is seeking a Senior Mechanical Design Engineer (contractor, ~15 hrs/week) to contribute to a customer project involving complex CAD assembly exploration and AI advancement. You will apply domain knowledge to train next‑generation AI systems, shaping how models learn, reason, and perform.

Role focuses on analyzing assemblies, formulating challenging questions, and documenting exact answers from CAD models with clear traceability. Remote work available in the US.

Qualifications

• 5+ years of professional experience creating multi‑part assemblies.
• Mastery in at least one major CAD tool (SolidWorks, Creo, NX, CATIA, Inventor, Fusion, Onshape, or Solid Edge).
• Experience teaching, mentoring, or leading design reviews or teams.
• Expertise in design intent, assembly reasoning, mechanism and kinematic analysis, and GD&T/tolerance judgment.
• Background in industrial machinery, robotics, automotive, aerospace, medical devices, or tooling design.
• Excellent written English communication for documentation and reports.
• Bonus: FreeCAD experience or formal design review leadership.

Responsibilities

• Analyze and dissect multi‑part mechanical assemblies to identify design decisions and failure points.
• Formulate challenging technical questions that test real‑world mechanical judgment.
• Validate and document defensible, exact answers from CAD models with traceability.
• Review AI‑generated outputs and suggest improvements to mechanical reasoning.
• Flag ambiguous or unanswerable questions and refine them for clarity.
• Document edge cases and sources of disagreement for verifiability.
• Communicate findings in clear written and verbal form to support project progress.

Skills

Design intent & assembly reasoning

Parametric modeling depth

Mechanism & kinematic sense

GD&T & tolerance judgment

CAD tools expertise

Tools

SolidWorks

Creo

NX

CATIA

Inventor

Fusion 360

Onshape

Solid Edge

Job description

Role Title: Senior Mechanical Design Engineer

$40 - $90/hour

pay

Required Skills

• Design intent & assembly reasoning
• Parametric modeling depth
• Mechanism & kinematic sense
• GD&T & tolerance judgment
• CAD tools expertise

About micro1

micro1 is the leading AI data lab for training frontier models and evaluating AI agents. Experts contribute their diverse subject matter knowledge across domains such as finance, healthcare, STEM engineering, and more. micro1 transforms that real-world expertise into high-quality training data, evaluations, and feedback loops that improve how AI systems learn, reason, and perform.

Our platform identifies and vets top talent through an AI recruiter, enabling high-quality expert contributions at scale. We aim to enable 1 billion people to do meaningful work by applying their expertise to AI. As our global expert network grows, micro1 is building the human intelligence layer for frontier AI.

Role Type: Contractor (~15hrs/week)

Location: Remote

micro1 is engaging Senior Mechanical Design Engineers to contribute to a customer's project involving complex CAD assembly exploration and AI advancement. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required - your domain knowledge is what matters.

Scope of Work

• Analyze and dissect multi-part mechanical assemblies to identify critical design decisions, constraints, and potential failure points that challenge expert reasoning.
• Formulate challenging, non-obvious technical questions that test real-world mechanical design judgment, ensuring relevance and difficulty beyond junior-level understanding.
• Validate and document defensible, exact answers directly from CAD models, ensuring clear traceability and accuracy.
• Review AI-generated outputs, pinpoint breakdowns or inaccuracies in mechanical reasoning, and suggest targeted improvements.
• Flag ambiguous, trivial, or unanswerable questions, refining or sharpening them for clarity and precision.
• Thoroughly document edge cases and sources of disagreement within answers to maintain strict verifiability.
• Communicate findings and reasoning in clear, professional written and verbal form to support continuous project improvement.

Preferred Qualifications

• 5+ years of professional experience creating and overseeing multi-part mechanical assemblies from concept, not just from existing drawings.
• Mastery in at least one major parametric CAD tool (SolidWorks, Creo, NX, CATIA, Inventor, Fusion, Onshape, or Solid Edge).
• Demonstrated experience in teaching, mentoring, or leading - whether through formal instruction, leading design reviews, or coaching engineering teams.
• Expertise in design intent, assembly reasoning, mechanism and kinematic analysis, and robust GD&T/tolerance judgment.
• Background in at least one discipline: industrial machinery and automation, robotics, automotive and heavy equipment, aerospace and defense, medical devices, consumer products, or tooling and fixture design.
• Exceptional written English communication skills - your documentation directly influences project deliverables.
• Bonus: Experience with FreeCAD, advanced GD&T/tolerance analysis, or formal design review leadership.