Jiachuan L.

Experience

• Founder & Principal Mechanical Design Lead Oscar Hardware Sourcing & Engineering Studio · Self-employed Jun 2024 – Present 2 yrs Zhejiang, China Provide turnkey engineering consulting and mechanical optimization services for international hardware startups, premium consumer brands, and cross-border e-commerce sellers.
  
  Our studio's multi-sector expertise spans high-precision consumer hardware, heavy-duty industrial equipment, and safety-critical juvenile products:
  
  - Premium Consumer Electronics & Personal Care: Extensive track record in engineering advanced High-Speed Hair Dryers, Beauty Devices, and Electric Toothbrushes. Expert mastery over compact internal component stacking, thermal management, high-rpm impeller balance, and rigorous waterproof engineering (IPX7 sealing).
  
  - Outdoor Power Equipment & Gardening Tools: Heavy experience managing high-volume OEM/ODM engineering pipelines for world-leading gardening tool giants (such as Makita and Husqvarna), specializing in robust multi-component plastic structures and durability analysis.
  
  - Juvenile Products & Children's Vehicles: Proven capability in structural engineering and complex mechanical folding/locking mechanisms for top-tier stroller and children's vehicle exporters, ensuring 100% compliance with rigorous global safety standards (US ASTM and European EN certifications).
  
  Utilize Creo (Pro/E) to perform exhaustive Design for Manufacturing (DFM) reviews, optimizing wall thickness and tool drafts to completely eliminate injection molding defects and warpage before cutting mold steel. Leverage localized supply chain networks in the Ningbo/Cixi/Yuyao clusters to audit specialized tooling shops, manage RFQs, handle factory tooling audits, and secure cost-effective manufacturing with on-site quality control for foreign clients.
• Senior Mechanical Design Engineer Premium Consumer Electronics ODM Manufacturer (Philips & Xiaomi Partner) · Full-time May 2021 – May 2024 3 yrs Zhejiang, China - Managed end-to-end product development for personal care devices including high-speed hair dryers, handheld beauty instruments, and electric toothbrushes for international brands.
  
  - Specialized in compact internal component stacking, thermal management, high-RPM impeller balancing, and rigorous waterproof engineering (IPX7).
  
  - Conducted DFM reviews and optimized designs for high-volume injection molding and assembly.
  
  - Coordinated with suppliers and factories to ensure quality, cost targets, and timely production release.
  
  - Supported products that achieved significant market share in the global personal care appliance segment.
• Mechanical Design Engineer Top-tier Children’s Vehicle Manufacturer (Domestic Top 10) · Full-time Mar 2018 – Mar 2021 3 yrs Zhejiang, China - Led structural design and continuous improvement for children’s tricycles, ride-on cars, and snow vehicles from concept to production.
  
  - Designed complex folding and locking mechanisms while ensuring full compliance with rigorous US ASTM and European EN safety standards.
  
  - Performed detailed DFM (Design for Manufacturing) analysis on plastic parts, metal tubes, and assemblies to optimize moldability and reduce production defects.
  
  - Coordinated with tooling suppliers and oversaw prototype development, testing, and production ramp-up.
  
  - Collaborated with cross-functional teams to improve product durability, safety, and cost efficiency for export markets.
• Project R&D Engineer Leading Chinese Gardening Tools Manufacturer (Top 3) · Full-time Feb 2012 – Feb 2018 6 yrs Zhejiang, China Led full-cycle development of electric and gasoline-powered garden tools (string trimmers, blowers, lawn mowers) from concept to mass production for domestic and international markets.
  
  Specialized in plastic part design, sheet metal structures, and multi-component assembly optimization using Creo.
  
  Conducted DFM reviews, prototype validation, tooling coordination, and production release, significantly reducing development cycles and manufacturing costs.
  
  Ensured compliance with EU and US safety & certification standards (CE, UL, etc.).
  
  Managed cross-functional projects with suppliers and internal teams to deliver over 20 new product models.