Ajax Systems

Mechanical Engineer

Ajax Systems

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇨🇳 China

Visit company website
✨ AI Apply
Apply

Job Level

Mid-LevelSenior

Tech Stack

AssemblyCloud

About the role

  • Complete lifecycle design of plastic enclosures and mechanical assemblies for consumer electronics.
  • Development of DFM- and DFH-oriented solutions considering mass production processes (plastic injection molding, assembly, sealing, serviceability).
  • Collaboration with hardware and embedded engineers, industrial designers, technologists, quality control, and manufacturing departments.
  • Design of ergonomic, intuitive solutions adaptable to different operating environments.
  • Preparation of production transfer documentation (2D drawings, specifications, technical requirements, 3D models for molds).
  • Support of mold development and approval of modifications after initial mold trials (T0–T2), including defect analysis.
  • Participation in testing and feedback from prototypes and production, incorporating design improvements.
  • Verification of engineering compliance of the finished product with expected technical parameters (stiffness, assembly, weight, IP protection).
  • Oversight of the product lifecycle from concept to mass production, including cost analysis and assessment of the impact of design decisions on production costs.
  • Communication with Chinese factories: technical specifications, drawing reviews, change control, feedback on prototypes and production samples.
  • Assessment of manufacturing risks in China: equipment limitations, mold quality, shrinkage, production tolerances, and the influence of packaging and logistics on design.
  • Inspection of samples from China: defect analysis (shrinkage, warping, poor casting), initial product assembly, and reporting with recommendations.
  • Consideration of potential scaling difficulties in China: timeline tracking, mold duplication, and price optimization.
  • Continuous communication via email, video calls, document comments (in English), and participation in editing specifications based on feedback from the Chinese side.

Requirements

  • 3D Modeling & Design: SolidWorks (95% solid modeling, 5% surface modeling), basic sheet metal modeling knowledge.
  • Creation of precise assemblies, constraints, tolerance verification, and preparation of models for molding production.
  • Ability to break down complex projects into sub-units, using reference geometry and configurations.
  • DFM / DFA / Manufacturing: Knowledge of mold design: opening directions, gating points, parting lines, risks of short shots/air pockets.
  • Optimization for scalability and cost reduction (minimize part count, reduce weld lines, shorten cycle time).
  • Experience working with factories in Ukraine and China; understanding of the mold lifecycle; participation in modifications after T1/T2.
  • Basics of metal processing technologies: bending, stamping, laser cutting, milling for internal frames and auxiliary parts.
  • Understanding of Chinese manufacturers’ practices: interpretation of drawings, overlooked details, confirmation processes.
  • Understanding of the Chinese production structure: project managers, engineers, suppliers.
  • Active participation in mold development discussions: steel selection, cost estimation, gating points, parting lines.
  • Familiarity with typical Chinese documentation formats: PDFs, STEP files, Excel specifications, compressed archives, WeTransfer/Alibaba Cloud.
  • Testing & Prototyping: Manual inspection, assembly, and analysis of critical nodes.
  • Identifying and resolving sealing, play, and fit issues.
  • Skilled in the use of measuring tools: calipers, micrometers, gauges, etc.
  • Materials Science & Standards: Properties of ABS, PC, PC+ABS, PA+GF, TPE, and TPU: shrinkage, impact strength, heat resistance, and elasticity.
  • Understanding material behavior during production and operation (temperature, humidity, UV).
  • Balancing cost, quality, and manufacturability when selecting materials.
  • Functional Elements: Development of fasteners, clips, guides, seals, TPE/TPU elements, and mounting slots.
  • Design of interface elements: buttons, indicators, light guides, ports, and ventilation openings.
  • Knowledge of sealing methods and IP protection standards (IP54–IP67), heat dissipation, and battery compartment design.
  • Considering Chinese factory constraints: wall thickness, micro gaps, welding, and assembly limitations.
  • Designing for high repairability and ease of assembly in outsourced Chinese facilities.
  • Documentation & Production Support: Generation of complete documentation bundles: 2D outlines, tolerance tables, BOMs, assembly specifications.
  • Implementation of changes based on prototype or production feedback.
  • Participation in preparing technical descriptions for QC, assembly instructions, and design documentation control.
  • Communication & Tools: English B2+ level – oral and written technical communication with Chinese suppliers.
  • Experience in communication with Chinese engineers, managers, and production teams (via Alibaba, WeChat, email, video calls).
  • Knowledge of Chinese business communication nuances: importance of confirmations, repetitions, and visual examples.
  • Use of SolidWorks PDM, Excel, Google Docs, Asana/Trello/Notion for project management.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
3D modelingDFMDFAmold designtolerance verificationmaterials sciencesealing methodscost optimizationtesting and prototypingdefect analysis
Soft skills
communicationcollaborationproblem-solvingproject managementattention to detailadaptabilitycritical thinkingorganizational skillsfeedback incorporationrisk assessment