Hello, I'm Ambrose Chua.
I build websites, run servers and occasionally play CTFs.

Experiences

I began building websites in 2012 (when web standards were still fragmented thanks to that one horrendous browser). I've worked on quite a few Node.js projects since 2013 and recently started picking up Go and Rust. I also love to run scalable and distributed systems hence I'm trying out Kubernetes.

I've also spent 7 years using Linux systems at home (having used a laptop, Raspberry Pi, custom built desktop, Xserve and now DL360 G7). My home network used to run pfSense, but now it runs dual-stack IPv6 and IPv4 on Alpine Linux and OpenWRT on a mix of consumer and small business equipment.

• April 2022 – Jun 2019

  Cyber NSF

  Singapore Armed Forces

• Apr 2019 – Jan 2019

  Co-founder & Technical Advisor

  Constant Bearing

  Helped iterate on a prototype port call platform.

• Jan 2019 – Jun 2018

  Co-founder

  Beep

  Building a new way to communicate with your friends and family by voice.

• Jun 2018 – May 2018

  Software Engineering Intern

  GovTech Singapore

  Worked on a PoC for the traintraintrain project to improve it's security, wrote an API wrapper to translate Emails into API calls, and built a Kafka setup.

See what else I'm up to

Talks

• Edison - Taking Flight @ Hackware v1.9
• Building high availability applications @ BuildingBloCS 2017
• Kubernetes on Container Linux @ Singapore Kubernetes User Group
• Managing services on one server with Portainer and Drone @ Docker Singapore
• Choosing the wrong footprint @ Hackware v4.3

Skills

• Linux Administration
• Computer Networking
• Network/Computer Security
• Server Hardware/Configuration
• Graphic Design
• Embedded Systems
• Distributed Systems

Languages

• Go
• ECMAScript/Node.js
• HTML/CSS
• Sass
• Java
• Python

Picking Up

• Flutter
• Kubernetes
• Terraform
• Scala
• Rust

Tools

• Road Bike: Merida Scultra 901
• Camera: Nikon D610
• MacBook Pro 2016 13", iTerm, chunkwm
• Neovim, ZSH (dotfiles)
• Alpine, CoreOS, Ubuntu, Arch
• Docker, CoreDNS, Traefik, Let's Encrypt
• Figma, Krita, Inkscape
• N3050 box, HP DL360 G7 in 24U
• Quickfire TK
• KiCad, Yihua 936

Awards

Local

• 2015: NIC Face-Off | App Development, Champions
• 2015: Hackathon@SST, First Prize (Secondary)
• 2015: Hackathon@SG, Merit & Secondary School Prize
• 2016: Hack&Roll 2016, Best Freshman/Non-Tertiary Award
• 2017: CrossCTF 2017, 1^st Runner-up
• 2018: CrossCTF 2018, Champion

International

• 2015: Asia Pacific ICT Alliance Awards, Merit (School Project)
• 2018: HITB GSEC 2018 .edu CTF, 1^st Runner-up
• 2018: HITB SecConf2018 Dubai .pro CTF, 1^st Runner-up

Notable Participations

• 2017: HITB GSEC CTF, On-site Participation

Major Projects

Some Side Projects

You can find more at my GitHub profile.