Mechanical Design Engineer, Plastics

Mindrobotics
Palo Alto, CA
On-site

Who this role is best for

Mechanical design professionals with deep plastics expertise and hands-on manufacturing experience will find this role emphasizes ownership of A-surface components and collaboration with tool shops and vendors in a full-time, on-site capacity.

Best fit for

  • Candidates with 5+ years of injection molding design experience in robotics or automotive sectors
    — “5+ years designing injection-molded plastic parts for high-volume consumer, automotive, or robotics products”
  • Individuals with strong polymer materials science knowledge and process sensitivity
    — “Deep, hands-on knowledge of polymer materials science: resin families, fillers and additives, anisotropy, moisture sensitivity”
  • Professionals comfortable with translating industrial design into production-ready parts
    — “Develop Class-A surfaces and translate ID surfacing into manufacturable parts”

Things to consider

  • This role demands full-time on-site presence in Palo Alto, with no mention of remote flexibility
    — “Work directly with tool shops, molders, and CMs through tool kickoff, T0/T1 sampling”
  • Candidates must be able to handle complex multi-part assemblies and interface with electronics and actuators
    — “Define and own GD&T, tolerance stack-ups, and datum schemes across multi-part plastic assemblies”

How to stand out

  • Highlight experience in managing full production tooling and validating parts through testing
    — “Build and test prototypes ... validate with drop, structural, and environmental testing”
  • Emphasize your ability to balance material properties with cost and manufacturability
    — “Select polymers and processes ... balancing appearance, impact and creep behavior, chemical and UV resistance, flammability, and cost”
  • Showcase your GD&T and tolerance analysis skills with specific examples from past projects
    — “Fluent in GD&T (ASME Y14.5 or ISO GPS) and tolerance analysis”
  • Demonstrate your ability to work with vendors on cosmetic standards and defect limits
    — “Own cosmetic specification: textures, gloss levels, color matching, painting”
Pace · SteadyCollaboration · MediumAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • design of A-surface plastic components
  • translation of industrial design intent into manufacturable parts
  • selection of polymers and processes
Typical background
5+ years of experience in mechanical designdeep hands-on knowledge of polymer materials science

Skills & requirements

Required

Mechanical DesignInjection MoldingPolymer Materials ScienceGD&TCosmetic Specification

Preferred

3D PrintingUrethane CastingCNC

Stack & domain

Mechanical DesignPlasticsInjection MoldingPolymer Materials ScienceGD&TSolidworksCatiaNXCreoProblem SolvingAttention To DetailTeamworkCommunicationRoboticsManufacturingEngineering

About the role

Original posting from Mindrobotics via Ashby

ABOUT MIND:

Mind Robotics is building Physical AI for real-world industrial deployment, starting with the factory floor. We believe the hardest problems in AI are solved when researchers and engineers are hands-on with the physical world every day - and we're looking for people who are passionate about robotics, value ownership, and are excited to tackle difficult problems.

RESPONSIBILITIES

  • Own the mechanical design of A-surface plastic components for the robot — covers, skins, shrouds, bezels, and cosmetic enclosures — from industrial design intent through production tooling.
  • Develop Class-A surfaces and translate ID surfacing into manufacturable parts, holding gap-and-flush, parting line, draft, and aesthetic intent across the full assembly.
  • Select polymers and processes across the cosmetic stack: ABS, PC, PC/ABS, PA and glass-filled grades, TPU/TPE, and specialty resins — balancing appearance, impact and creep behavior, chemical and UV resistance, flammability, and cost.
  • Define and own GD&T, tolerance stack-ups, and datum schemes across multi-part plastic assemblies and their interfaces to structures, actuators, and electronics.
  • Drive DFM and DFA for injection molding, insert molding, overmolding, and secondary operations — gate and ejector strategy, wall thickness, ribbing and boss design, warp and sink mitigation, and shutoff design.
  • Own cosmetic specification: textures, gloss levels, color matching, painting, plating, laser etching, and in-mold decoration, plus the defect standards and limit samples that go with them.
  • Work directly with tool shops, molders, and CMs through tool kickoff, T0/T1 sampling, tuning, and PPAP — reviewing mold flow, tool design, and first-shot parts, and driving corrective action.
  • Build and test prototypes using 3D printing, urethane casting, CNC, and soft tooling, then validate with drop, structural, and environmental testing.

QUALIFICATIONS

  • Exceptional mechanical intuition. You understand how polymers flow, shrink, warp, and fail — and you can predict it before the tool is cut.
  • 5+ years designing injection-molded plastic parts for high-volume consumer, automotive, or robotics products, with parts you took from CAD through production tooling.
  • Deep, hands-on knowledge of polymer materials science: resin families, fillers and additives, anisotropy, moisture sensitivity, and how process conditions change part behavior.
  • Fluent in GD&T (ASME Y14.5 or ISO GPS) and tolerance analysis, including worst-case and statistical stack-ups on compliant plastic parts.
  • Proven experience owning cosmetic A-surface parts and defending appearance standards with vendors.
  • Strong surfacing skills in SolidWorks, CATIA, NX, Creo, or similar; comfort reading mold flow results and tool drawings.
  • Comfortable with ambiguity, moves fast, and curious about how the whole system works.

Source: Mindrobotics careers (Ashby)

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