Johnny Lui

Johnny Lui sitting beside a lake in Hong Kong
Field portrait / Hong Kong / 2026

Software developer building useful products at the intersection of cloud, code, and security.

Full-stack products Cloud systems Automation Cybersecurity

Selected work · 2024—26

Tools made for
real use.

Two compact products shaped around everyday friction: one inside a community, one across a university.

Case 01 / Community tooling
CourtBot debt tracking workflow inside Discord

Discord automation · Private server

CourtBot

A long-running Discord bot built for my own community. It brings server utilities, notifications, Hong Kong transit and weather data, AI chat, and custom workflows into one familiar interface.

  • Node.js
  • Discord.js
  • OpenAI
  • External APIs
Read the source

Profile · The short version

I move between the product people touch and the systems that keep it standing.

I am a Computer Science student at The Chinese University of Hong Kong focused on full-stack development, cloud computing, and cybersecurity. I enjoy turning ambiguous problems into dependable software, whether that means a mobile experience, an automation pipeline, or the infrastructure behind it.

Outside product work, I compete in capture-the-flag tournaments and lead university events. That mix has taught me to stay curious, work calmly under pressure, and make technical ideas legible to other people.

Years coding
5+
Industry roles
06
CTF result
01Champion
Microsoft certs
07

Experience · 2021—Now

A trajectory through
different layers.

Current

Microsoft · Hong Kong

Customer Success Account Management Intern

Supporting enterprise cloud adoption across Azure, Microsoft 365, and Copilot; shaping success plans, business reviews, and coordination across account teams.

→ 05.2026

Goodnotes Limited

IT Infrastructure Intern Contractor

Connected SaaS services, automated internal processes, supported daily IT operations, and evaluated tools through a security-first lens.

→ 08.2025

Petalife

Full-Stack Developer Intern

Shipped a cross-platform React Native product backed by AWS Lambda and NestJS, delivering production features inside an agile team.

→ 07.2024

OTIS Elevator

Digital Technology Summer Intern

Developed a customer-support chatbot and transformed paper forms into JavaScript and SQL-powered digital workflows.

→ 08.2023

I-Charge Solutions

Intern Programmer

Built OCPP charging systems, live car-park displays, and kiosk payment integrations across Java, Python, Vue, and Express.

→ 09.2022

Freelance

Discord Bot Developer

Created notification, membership authentication, and school-email verification bots with Python, Flask, OAuth2, and Node.js.

Practice · Tools I reach for

Broad enough to connect.
Focused enough to ship.

Interfaces

HTML · CSS · JavaScript · TypeScript · React Native · Vue.js · Tailwind CSS

01 / 05

Services

Node.js · Express · NestJS · Python · Java · FastAPI · Flask · Discord.js

02 / 05

Data

PostgreSQL · MySQL · MariaDB · MongoDB · Redis · Firebase

03 / 05

Infrastructure

AWS · Azure · Google Cloud · Docker · CI/CD · Linux · Git

04 / 05

Security

CTF cybersecurity · Wireshark · Proxmox VE · Systems thinking

05 / 05

Recognition · Proof under pressure

Built to solve.
Tested to win.

Competition sharpens the same instincts good engineering relies on: observation, composure, and a willingness to try the unexpected path.

PolyU NuttyShell CTF · 2024

Champion

Team leader · Tertiary institution category · 9,434 points

HK01 event coverage

Awards

  • 20241st Runner-Up · CUHK CTF
  • 202319th tertiary · HK Cyber Security New Generation CTF
  • CUHKFaculty Admission Scholarship
  • CUHKTalent Development Scholarship

Certifications

  • MicrosoftAZ-900 · Azure Fundamentals
  • MicrosoftAI-900 · Azure AI Fundamentals
  • MicrosoftDP-900 · Azure Data Fundamentals
  • MicrosoftPL-900 · Power Platform Fundamentals
  • MicrosoftSC-900 · Security, Compliance, and Identity Fundamentals
  • MicrosoftAB-900 · Copilot and Agent Administration Fundamentals
  • MicrosoftOffice Specialist Associate
  • AWSCertified Solutions Architect – Associate
  • GoogleCloud Skill Badges

Contact · Start a conversation

Open to projects and opportunities

Have something
worth building?

[email protected]

Based in Hong Kong
Working across time zones