I'm CallWinai, focused on building scalable products and reliable systems.

Full-stack Developer, AI Engineer, and Technical Lead. I build AI apps, RAG systems, automation tools, CMS commerce systems, and polished web experiences for overseas teams.

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CallWinai
  • AI Engineer
  • Full-Stack Engineer
  • Technical Lead
Remote Work | Collab | Startup
Remote / GMT+8
20+project experience
6+years in engineering
Senior / Experttechnical level

AI

LLM product workflows, RAG, agents, automation, prompt systems, and human review loops.

  • AILLM
  • AgAI Agents
  • RRAG
  • LCLangChain
  • PEPrompt Engineering

Frontend

Product dashboards, portfolio surfaces, CMS themes, mobile web, and conversion-focused UI.

  • NNext.js
  • RReact
  • VVue
  • RNReact Native
  • TSTypeScript
  • TWTailwind CSS
  • VVite

Backend

API services, workflow engines, auth, integrations, database design, and production business logic.

  • NdNode.js
  • NNestJS
  • PyPython
  • FFastAPI
  • DBPostgreSQL
  • SQLMySQL
  • MDBMongoDB
  • RRedis

CMS

Commercial content systems and commerce operations for overseas-facing businesses.

  • WWordPress
  • WCWooCommerce
  • SShopify
  • StStripe
  • SLShopline

CI/CD

Separated environments, release scripts, Linux operations, certificates, and deploy automation.

  • GHGitHub
  • DDocker
  • NxNginx
  • PPM2
  • CFCloudflare
  • AAWS

Selected Projects

AI products, data platforms, automation systems, and production tooling built around measurable business impact.

Resume

From software engineering fundamentals to large-scale internet products, full-stack platforms, and AI-led team delivery.

2024 - 2026

Team Lead · Large Chinese Internet Company · 1,000+ employees

AI innovation business and engineering team management

Led an 8-person team across AI ad creative generation, VIP customer-service chat, and enterprise RAG initiatives, owning product delivery, technical decisions, and cross-functional execution.
  • AI Products
  • Team Leadership
  • RAG
  • LLM
  • Ad Creative
  • Customer Chat
2022 - 2024

Full-stack Developer · Large Chinese Internet Company · 1,000+ employees

Consumer product engineering and full-stack infrastructure

Worked on C-side business systems including mini-programs, SDKs, official websites, and foundational frontend/backend engineering architecture for product delivery at scale.
  • Full-stack
  • Mini Programs
  • SDK
  • Websites
  • Frontend Architecture
  • Backend Architecture
2020 - 2022

Frontend Developer · Large Chinese Internet Company · 1,000+ employees

B2B SaaS systems and frontend engineering foundations

Built internal and enterprise-facing B-side SaaS products, while contributing to self-developed component libraries, scaffolding tools, SDKs, and reusable frontend engineering assets.
  • Frontend
  • B2B SaaS
  • Component Library
  • Scaffold
  • SDK
  • Design System
2016 - 2020

Bachelor's Degree · Software Engineering

Software Engineering at a well-known Chinese university

Completed undergraduate training in software engineering, covering programming fundamentals, data structures, databases, operating systems, networks, and software project development.
  • Software Engineering
  • Bachelor
  • CS Fundamentals
  • Database
  • Systems

Let's build something useful.

Open to remote full-time, contract, and part-time roles, as well as product collaboration, technical partnership, and startup venture opportunities.

CallWinai | Full-stack Developer & AI Engineer