# Xinhang “Antony” Mai

Technical Product Manager | Applied AI, Automation & Commerce Systems

- **Location:** London, United Kingdom
- **Email:** [antonyinuk@outlook.com](mailto:antonyinuk@outlook.com)
- **Phone:** [+44 7934 918940](tel:+447934918940)
- **LinkedIn:** [https://linkedin.com/in/maixinhang](https://linkedin.com/in/maixinhang)
- **Website:** [https://xinhang.cv](https://xinhang.cv)

## Professional summary

**Technical Product Manager** with 5+ years across Amazon commerce, multi-channel retail operations and applied AI. Owns a shared internal commerce platform from product definition and workflow design through production delivery, translating business requirements into automation, AI-assisted decisions and measurable commercial outcomes, with hands-on delivery across TypeScript, NestJS and PostgreSQL.

## Experience

### e-Commerce Manager — 4Feet Retail Ltd (Trading as 4Feetshoes)

**Nov 2021 – Present · London, United Kingdom**

#### Applied AI & Agentic Workflow Transformation — Early 2025 – Present

Own product direction and production delivery for AI-assisted workflows on the internal operations platform, turning reporting into decision support and automated execution.

- Delivered an Amazon listing remediation workflow that processed 1,600+ issues across 800+ SKUs/ASINs in 81 minutes versus an estimated 133+ manual hours, resolving 98.9% autonomously in a representative UK batch.
- Scaled Amazon remediation to 6,400+ workflow runs across 12 marketplaces for stores with approximately 60,000 SKUs each, using around 300 reusable, task-specific agent capabilities.
- Defined the product governance and risk controls required for automated Amazon listing changes, including schema validation, listing-only permissions, version history, controlled iteration limits, human escalation and post-submission verification.
- Used daily Google Merchant Center, Shopify and inventory reporting to detect a 10x+ footwear demand spike on the day it emerged and prompt pricing, stock and purchasing actions.
- Established a repeatable multi-agent delivery model covering implementation, separate review, debugging and testing stages, while retaining ownership of requirements, acceptance criteria, architecture and production release.

#### Commerce Systems & Internal Platform — Nov 2021 – Present

Owned the product direction and delivery of an internal platform supporting multi-channel sales, purchasing, product data and central warehouse workflows.

- Owned platform product planning and delivery from its initial 2022 launch through 3+ major releases and 200+ incremental releases.
- Translated requirements across multi-channel sales, purchasing, product data and central warehouse operations into prioritised release scope and production workflows.
- Automated product-data and marketplace workflows across Linnworks, Shopify, Walmart, Worten, Debenhams and CDiscount, reducing manual channel administration.
- Directed the platform’s evolution from legacy data integrations into a PostgreSQL- and NestJS-based service architecture, enabling new business workflows and broader marketplace automation.
- Defined resilience and recovery requirements and led an approximately 80-minute production hosting migration with zero data loss, reducing monthly costs by 33% while increasing compute and storage capacity.

### Overseas E-Commerce Specialist — Guangzhou Rantion Trading Co., Ltd.

**Sep 2020 – Aug 2021 · Guangzhou, China**

#### Amazon North America Operations — 2020 – 2021

Managed Amazon North America operations for RV accessories and lighting.

- Delivered US$900,000 in quarterly overseas sales across Amazon North America categories.
- Maintained an Amazon Ads conversion rate above 12% and Total Advertising Cost of Sales (TACoS) below 5% using a custom analytics model.
- Developed YouTube influencer outreach and coordinated inventory planning, cross-border fulfilment and Amazon Global Logistics.

## Earlier leadership

### Vice President of Technology Services — Enactus of SYSU

**Sep 2016 – Jun 2020**

Led a six-member technical services team, assessing technical feasibility and delivering online solutions for cross-campus social-impact programmes. Supported initiatives in quality education, resource reuse and sustainable development that reached 5,000 people and generated nearly CN¥25,000 in economic benefit.

## Education

### BSc Economics & Finance — Sun Yat-sen University

**Sep 2016 – Jun 2020**

### Awards

- Third Prize, Greater Bay Area Youth Innovation Competition (2018)
- Hong Kong Students Scholarship, Ministry of Education in China (2017–2019)
- Outstanding Student Scholarship, Sun Yat-sen University (2018)

Selected modules: Econometrics · Operational Research · Supply Chain Management · Corporate Finance

## Core capabilities

### Product & delivery

- Technical product ownership
- Product definition
- Business process analysis
- Requirements definition
- Acceptance criteria
- Workflow design
- Production delivery

### Technical stack

- TypeScript
- NestJS
- PostgreSQL
- Prisma ORM
- Docker
- Portainer
- AWS S3

### AI & agent systems

- Agentic workflow design
- Guardrails and human escalation
- Schema validation
- Multi-agent delivery
- Mastra.ai
- LangChain
- Langfuse observation

### Commerce & APIs

- Amazon SP-API
- Shopify
- Linnworks
- Walmart
- CDiscount
- Marketplace integrations
- Product data and template workflows

### International commerce

- UK retail operations
- China & Asia supply chains
- Cross-border fulfilment
- Multi-marketplace commerce

### Languages

- English — Full professional working proficiency
- Mandarin Chinese — Fluent
- Cantonese — Native