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Masaki S.
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Masaki S.

Fractional COO - Technical Sourcing DfM and Japan Market Entry

Stop manufacturing defects, blown tooling budgets, and profit-draining customs delays. As a Top Rated Plus partner (ranked in the top 3% of all global talent on Upwork) with 15+ years of cross-border trade and hardware engineering experience, I don't just "source products" — I protect your capital, debug complex manufacturing issues, and build failure-proof global supply chains. Whether you are a US/EU hardware startup launching high-precision manufacturing in China/Vietnam, or an established brand navigating rigid legal barriers to enter the Japanese market, I act as your Virtual COO to secure absolute technical and regulatory victory. (Note: In strict compliance with professional NDAs, all client names and brand identities below are protected and anonymized). 🛡️ HOW I PROTECT YOUR REVENUE, MARGINS & CAPEX: 1. Technical Product Engineering & DfM (China / Vietnam) Backed by my background as a consumer electronics engineer (PCB/circuit design) and Product Manager, I bridge the gap between complex Western 3D blueprints (Tech Packs) and Asian factory realities. I perform proactive Design for Manufacturing (DfM) audits — such as splitting complex 3D CAD designs to slash injection mold tooling costs by 30%, or designing custom CNC sewing template jigs to achieve impossible technical textile structures. 2. Pre-Tooling Risk Control & Fiduciary Protection Before you wire thousands of dollars for tooling or mass production, I lock in your quality. I enforce rigid "Pre-Tooling Technical Confirmations" to legally bind factories to physical tolerances (e.g., "Steel-Safe" mold strategies to guarantee click-fit assemblies) and ensure they cannot hit you with hidden modification surcharges. 3. Structural Japan Market Entry & JCT/ACP Framework I build the legal and tax bridge to Japan. I coordinate with local patent attorneys, tax accountants, and customs authorities to register your trademark (JPO/WIPO), establish legal ACP (Attorney for Customs Procedures) / IOR (Importer of Record) frameworks, and structure your entity to maximize JCT (Japan Consumption Tax) refunds. 4. Tariff Engineering & Strategic Customs Recovery I actively fight to protect your bottom line. Whether it's redesigning product classifications to drop your customs duty from 17.6% to 2.5%, utilizing FTAs (RCEP/CPTPP) for 0.0% duty, or overriding carrier HTS classification errors in the ACE system to secure immediate cash refunds — I ensure you never pay a penny of unnecessary tax. 📊 PROVEN ROI & SUCCESS STORIES (Why Brands Keep Me on Retainer): * US-Based Tactical Board Game: Audited 3D CAD files, implemented a split-design mold strategy to slash injection tooling CAPEX by $11,900 (30%), and established a "Steel-Safe" engineering agreement with an agile Dongguan mold maker. * Premium Eco-Friendly Personal Care: Engineered a 100% plastic-free custom textile supply chain across China and Vietnam, designing custom CNC sewing template jigs and sourcing proprietary 100% bamboo/ramie fibers. * Luxury Automotive Accessory Brand: Directed end-to-end Vietnam R&D and logistics; slashed US customs duties from 17.6% to 2.5% through strategic tariff engineering and HS code optimization. * US Professional Hair-Care Brand: Bypassed a 7-year entry barrier by negotiating directly with a traditional 70-year-old Japanese needle manufacturer, securing an exclusive direct-wholesale channel. * Premium Athletic Wear & CPG Brands: Blocked redundant patent billing ($1,450 saved), executed flawless JIS/FDA compliance, and reversed a US customs tax error for a 100% duty refund on day one. * Canadian Juvenile & Home-Care Brand: Architected a novel "Dual-Administrator" (ACP + PSC) compliance framework under Japan's strict 2026 child-safety laws; eliminated $5,000+ in redundant domestic re-testing via SDoC technical audits and secured direct Amazon Japan FBA entry with 10% JCT refunds. 🚨 EMERGENCY INQUIRIES (Manufacturing Bottlenecks or Customs Hold): If your project is currently stalled at an Asian factory, or your cargo is held by DHL, FedEx, or Japan Customs, message me immediately with: 1. Your 3D STEP files / Tech Pack (for manufacturing rescue) 2. The carrier's official customs hold notice & commercial invoice (for customs rescue) I will perform a rapid structural assessment under strict confidentiality to save your project. Let's build your friction-free global supply chain. Click "Message" to book a brief discovery call.

🇯🇵Yamato, Japan$75/hr100% JSS4.73 (15)Since Sep 2025

Earnings and projects

MRR
$3.9k

Last 6 months ÷ 6

World#8,264 / 412k
🇯🇵Country#13 / 1,269
Revenue, last 30 days
$5.2k

Last 6 months: $24k

World#5,189 / 412k
🇯🇵Country#11 / 1,269
Total earnings
$31k

Billed in all: $33k

World#107,358 / 412k
🇯🇵Country#191 / 1,269
Per project
$922

$906 in the last 6 months

World#130,176 / 412k
🇯🇵Country#281 / 1,269
Projects, last 6 months
26
54% fixed46% hourly
World#3,756 / 412k
🇯🇵Country#5 / 1,269
Projects in all
34
62% fixed38% hourly
World#87,477 / 412k
🇯🇵Country#182 / 1,269

Earnings, last 30 days

$32.6k+$5.2k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$25k$30k$35kOct 8Oct 23Nov 7

Skill rankings: #1 in 1 skill of 15

Rarest: top 0.86% in Logistics Coordination, of 1,159. Ranked by MRR among everyone on Upwork with the skill.

  1. 1Trade Law69 freelancers · 🇯🇵 #1Top 1%
  2. 3Import Procedure128 freelancers · 🇯🇵 #1Top 2%
  3. #9Manufacturing470 freelancers · 🇯🇵 #1Top 2%
  4. #10Logistics Coordination1,159 freelancers · 🇯🇵 #2Top 0.86%
  5. #17Product Sourcing1,305 freelancers · 🇯🇵 #3Top 1%
  6. #17Procurement991 freelancers · 🇯🇵 #1Top 2%
  7. #20Quality Control1,307 freelancers · 🇯🇵 #1Top 2%
  8. #21Electronics432 freelancers · 🇯🇵 #2Top 5%