<div class="datj"><header class="topbar"><div class="topbar-in"><a class="back" href="/"><span class="back-arrow">←</span>All roles</a><nav class="topbar-actions"><a class="link-quiet" href="https://app.dataannotation.tech/users/sign_in">Sign in</a><a class="btn btn-primary" href="https://app.dataannotation.tech/worker_signup?worker_src=ai_jobs&utm_source=webflow_jobby&utm_medium=web&utm_campaign=ai_training_jobs&utm_content=role_topbar_mechanical-design-engineer&utm_role=mechanical-design-engineer&projects=MECH_ENG">Apply now</a></nav></div></header><style>.rd-layout.rd-layout-v2{grid-template-areas:"title rail" "body rail";row-gap:40px;}.rd-layout-v2 article>.rd-section:first-child{margin-top:0;}.rd-layout-v2>.rd-title{grid-area:title;}.rd-layout-v2>article{grid-area:body;min-width:0;}.rd-layout-v2>.rail{grid-area:rail;}.rd-cta-btn{display:block;width:100%;margin-top:36px;text-align:center;}.rd-layout-v2~.similar{margin-top:56px;}@media(max-width:860px){.rd-layout.rd-layout-v2{grid-template-areas:"title" "rail" "body";row-gap:24px;}.rd-layout-v2>.rail{padding:16px;}.rd-layout-v2 .rail-rate{font-size:21px;}.rd-layout-v2 .rail-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px;margin:14px 0;padding-top:14px;border-top:1px solid var(--line);}.rd-layout-v2 .rail-row{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:0;border-bottom:none;}.rd-layout-v2 .rail-row span:first-child{font-size:10.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--faint);}.rd-layout-v2 .rail-row span:last-child{font-size:13.5px;color:var(--ink);text-align:left;}}</style><main class="wrap"><div class="rd-layout rd-layout-v2"><div class="rd-title"><h1>Mechanical Design Engineer</h1></div><article><section class="rd-section"><h2>Overview</h2><p>We’re looking for an experienced Mechanical Design Engineer to help train AI models. You’ll write hard, verifiable engineering problems drawn from your own specialty, work out the answers yourself, and show us exactly where today’s AI systems still fall short of a practicing engineer.</p><p>This is a new and fast-growing area for our company, focused on teaching AI to reason like an engineer. The models can already talk fluently about mechanical engineering. What they can’t yet do reliably is the actual work: size a component against a real load case, catch the failure mode a spec sheet doesn’t mention, read a CAD assembly and tell you what interferes at full travel, or predict what a design change breaks downstream. Your engineering judgment becomes the benchmark those models are measured against.</p></section><section class="rd-section"><h2>What you’ll actually do</h2><ul><li><b>Write challenging, closed-ended problems</b> from your area of expertise, built so that solving them requires real engineering reasoning rather than a lookup.</li><li><b>Derive the correct answer, verify it,</b> and write a worked solution showing how you got there.</li><li><b>Test your problems against AI systems</b> and sharpen the ones they get right until they challenge the model.</li><li><b>Review AI-generated engineering analysis, designs, and technical documentation</b> for correctness and real-world applicability.</li><li><b>Review other contributors’ problems and solutions</b> for correctness, ambiguity, and rigor.</li></ul><p><b>Problems draw on whatever you know best:</b></p><ul><li><b>Mechanical design and CAD:</b> geometry, clearances, tolerances, mechanisms, and the effect of design changes.</li><li><b>Structures and materials:</b> stress, deflection, fatigue, buckling, material selection, and failure analysis.</li><li><b>Thermal and fluids:</b> heat transfer, thermodynamics, HVAC, pumps and piping, and fluid mechanics.</li><li><b>Dynamics and controls:</b> vibration, kinematics, rotating machinery, and control systems.</li><li><b>Manufacturing:</b> DFM/DFA, process selection, GD&T, tolerance stack-ups, and cost and quality trade-offs.</li></ul></section><section class="rd-section"><h2>Roles this fits</h2><p>Common backgrounds: Mechanical Design Engineer, Design Engineer, CAD Engineer.</p></section><section class="rd-section"><h2>What we look for</h2><ul><li>2+ years of professional mechanical engineering experience in any specialty: design, product development, manufacturing, thermal, structural, automotive, aerospace, HVAC, robotics, energy, or related fields.</li><li>Fluency in the tools of your specialty, such as CAD (SolidWorks, Fusion 360, Onshape, Creo, NX, CATIA, or Inventor), FEA/CFD, or MATLAB/Python for engineering analysis.</li><li>Strong fundamentals across mechanics of materials, dynamics, thermodynamics, heat transfer, fluid mechanics, and manufacturing processes.</li><li>Able to write a precise, unambiguous technical problem and a clear worked solution in fluent written English.</li><li>Meticulous: you check your own work and enjoy finding the edge case that breaks an assumption.</li><li>A bachelor’s degree in mechanical engineering or a related field (completed or in progress).</li><li>Only applicants based in the United States, Canada, or the United Kingdom will be considered for this role.</li></ul></section><section class="rd-section"><h2>How it works</h2><div class="rd-steps"><div class="rd-step"><span class="rd-step-n"></span><h3>Apply</h3></div><div class="rd-step"><span class="rd-step-n"></span><h3>Qualify</h3></div><div class="rd-step"><span class="rd-step-n"></span><h3>Work & get paid</h3></div></div></section><section class="rd-section"><h2>Compensation</h2><p>Up to $40 – $125+/hr depending on task difficulty and specialization. Many contributors add $10k–$100k+ a year; some make it their full-time income.</p></section><section class="rd-section"><h2>About DataAnnotation</h2><p>DataAnnotation is where 100k+ experts train the world’s leading AI models. $150M+ paid to contributors to date, and the average contributor stays 5+ years. Flexible, remote, and always project-available.</p></section><a class="btn btn-primary btn-lg rd-cta-btn" href="https://app.dataannotation.tech/worker_signup?worker_src=ai_jobs&utm_source=webflow_jobby&utm_medium=web&utm_campaign=ai_training_jobs&utm_content=role_bottom_mechanical-design-engineer&utm_role=mechanical-design-engineer&projects=MECH_ENG">Apply now</a></article><aside class="rail"><span class="rail-label">Hourly rate up to</span><span class="rate rail-rate">$40 – $125+ <small>/ hour</small></span><div class="rail-meta"><div class="rail-row"><span>Location</span><span>Remote</span></div><div class="rail-row"><span>Commitment</span><span>Flexible hours</span></div><div class="rail-row"><span>Type</span><span>Independent contractor</span></div><div class="rail-row"><span>Payouts</span><span>Weekly</span></div></div><a class="btn btn-primary btn-lg rail-btn" href="https://app.dataannotation.tech/worker_signup?worker_src=ai_jobs&utm_source=webflow_jobby&utm_medium=web&utm_campaign=ai_training_jobs&utm_content=role_rail_mechanical-design-engineer&utm_role=mechanical-design-engineer&projects=MECH_ENG">Apply now</a></aside></div><section class="similar"><div class="proof-head"><h2>Similar roles</h2><a class="see-all" href="/">View all roles →</a></div><div class="grid"><a class="card" href="/job-board/mechanical-engineer"><h2>Mechanical Engineer</h2><div class="card-foot"><span class="rate">$40 – $125+ <small>/ hr</small></span><span class="hired">40 hired recently</span></div></a><a class="card" href="/job-board/validation-engineer"><h2>Validation Engineer</h2><div class="card-foot"><span class="rate">$40 – $125+ <small>/ hr</small></span><span class="hired">24 hired recently</span></div></a><a class="card" href="/job-board/automation-technician"><h2>Automation Technician</h2><div class="card-foot"><span class="rate">$40 – $125+ <small>/ hr</small></span><span class="hired">22 hired recently</span></div></a></div></section></main><footer class="footer"><div class="footer-in"><p>© Data Annotation 2026<br>All rights reserved.</p><div class="footer-links"><a href="https://www.dataannotation.tech/">dataannotation.tech</a><a href="https://www.dataannotation.tech/faqs">FAQs</a><a href="https://www.dataannotation.tech/trust-safety">Trust & Safety</a><a href="https://app.dataannotation.tech/da-privacy-policy">Privacy Policy</a><a href="https://app.dataannotation.tech/da-cookie-policy">Cookie Policy</a></div></div></footer></div>