Taiwan

Back-end

Technical Product Management

Business Development

Architectural Engineering

Jian Liu

Tech Lead

Problem-solving

Time management

Critical-thinking

Team player

Organisation skills

Leadership

Design systems

Game programming

Postman

Python

ChatGPT

Docker

GitHub

Golang (Go)

JavaScript

Miro

Notion

Confluence

GitLab

gRPC

REST API

MongoDB

Redis

RabbitMQ

PostgreSQL

Node.js

Kafka

TypeScript/NodeJS/PostgreSQL/RabbitMQ/GCP

- Lead company-wide technology strategy and define product roadmaps for international markets.
- Drive the company's transformation toward digital identity products by architecting the system, shaping the business model, and authoring the APDI Trust Framework white paper.
- Manage a team of 5–10, overseeing resource allocation and task assignment, and serve as the primary point of contact for cross-functional collaboration.

TypeScript/NodeJS/PostgreSQL/RabbitMQ/GCP

- Expanded digital credential product capabilities, including international SMS delivery, batched on-chain data anchoring, and identity presentation and verification.
- Integrated GCP observability tooling (Metrics, Logs, and Trace Explorer) to establish RCA and troubleshooting SOPs.
- Established the team's development workflow and redesigned the product's CI/CD pipeline.

Go/ArangoDB/MySQL/MongoDB/Redis/gRPC/NATS/ELK/Grafana/Sentry/GCP

- Built stress-testing framework to simulate various online scenarios, improving main business performance to 20k QPS.
- Implemented zero-downtime deployment to enhance release workflow, reducing routine maintenance time by approximately 10%.
- Optimized ArangoDB AQL queries, resulting in a 40% improvement in report query performance.
- Managed a team of 25-30 members, set departmental goals, defined job roles and career ladders and coordinated cross-departmental resources.

Go/NodeJS/Python/ArangoDB/Redis/gRPC/NATS/ELK/Grafana/GCP

- Built integration-testing framework to improve testing process, elevating system availability to 99.8%.
- Integrated ELK, Grafana and APM for real-time monitoring, load forecasting, and reducing troubleshooting time.
- Managed a team of 10-15 members, responsible for arranging development timelines, planning team member career roadmaps, and organizing regular book clubs.

Go/MySQL/ArangoDB/Redis/gRPC/NATS/Kafka/GCP

- Developed 9 games (Poker, Mahjong, Slot, etc.), responsible for game modularity, bot matching, and risk control.
- Built a game server framework from scratch, designing a distributed architecture to decouple WebSocket connection service from game service.
- Optimized card calculation logic, achieving a 90% improvement in processing speed for poker and mahjong hands.

Go/JavaScript(Cocos Creator)/MySQL/Redis/Consul/AWS

- Developed 16 HTML5 web-based poker and dice games, providing both PVE and PVP game modes.
- Built a game server framework from scratch, including game modularity, WebSocket connection management, and data  transmission protocol.
- Built bot matching service from scratch, along with data analytics, offering real-time monitoring and risk control tools.

PHP/Python/C++/Go/MySQL/MariaDB/GCP

- Conducted requirement interviews with various clients (e-commerce, insurance, catering, etc.). Assisted in implementing digital workflows, sales analysis, and marketing automation tools.
- Responsible for project allocation, front-end and back-end development, and server maintenance.

Jian Liu🇹🇼

About Jian Liu

Expertise

Sessions with Jian Liu

What mentees say