John Sun
Chief Technology Officer at Payroller
Sydney, New South Wales, Australia
Summary
👤
Senior🎓
Top SchoolJohn Sun is a seasoned technology leader and CTO based in Sydney with 15 years of experience building scalable web and backend systems, primarily using Node.js but fluent across Go, Python, Java, and front-end frameworks like React and Angular. He has progressed from research engineer roles at UNSW to senior backend developer and now CTO roles at Bookipi and Payroller, helping platforms that process billions in invoices and payroll reach global small-business customers. Known for hands-on engineering as well as strategic product delivery, he bridges research-grade prototyping with production-grade systems and deployment on Linux. A lifelong learner who treats side projects as labs for new languages and tools, he brings a pragmatic mix of startup grit and academic rigor from an MS in Computer Science.
16 years of coding experience
8 years of employment as a software developer
Bachelor of Engineering (B.E.), Computer Science, Bachelor of Engineering (B.E.), Computer Science at Yuan-Ze UniversityUNSW Sydney
Stackoverflow
3reputation
0reached
0answers
0questions
Github Skills (52)
statusline9
lua9
wine9
neovim-plugin9
nvim8
tabnine8
linux8
clickup-api8
neovim8
nodejs-library8
token-based-authentication8
middleware7
bluetooth-low-energy7
awesomewm7
vulkan7
Programming languages (10)
Github contributions (5)
freehaha/node-norikra-client
Jan 2015 - Nov 2015
Contributions:8 commits, 11 pushes, 1 branch in 10 months
freehaha/qmk_firmware
Mar 2020 - Nov 2022
Open-source keyboard firmware for Atmel AVR and Arm USB families
Contributions:78 pushes, 1 branch in 2 years 8 months
rp2040firmwareavratmelusb
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