Callista Chang
Software Engineer at Optiver
Singapore, Singapore
Summary
👤
Senior🎓
Top SchoolCallista Chang is a software engineer based in Singapore with eight years of hands-on experience building production systems across trading, fintech, and consumer tech. She currently develops low-latency, high-reliability software at Optiver after internships at Stripe, Goldman Sachs, and Apple, demonstrating strong exposure to both finance and large-scale product engineering. Her background in a double degree in Computer Science and Business Analytics from Nanyang Technological University gives her a pragmatic blend of technical rigor and data-driven decision making. Callista combines curiosity about computers with a creative interest in music, and she has repeatedly sought roles that intersect research, documentation, and applied engineering—from A*STAR research assistance to technical writing. Known for quickly adapting to new domains, she brings both depth in systems work and an appetite for continuous learning.
8 years of coding experience
1 year of employment as a software developer
GCE A-Level H2 Physics H2 Chemistry H2 Mathematics and H2 English Literature, GCE A-Level H2 Physics H2 Chemistry H2 Mathematics and H2 English Literature at Victoria Junior CollegeDouble Degree in Computer Science and Business Analytics, Double Degree in Computer Science and Business Analytics at Nanyang Technological University Singapore
English, Chinese, Indonesian
Github Skills (62)
oanda9
vscode6
vim6
zshrc6
visualizer6
storage6
vscode-extension6
printing6
keybindings5
visual-studio5
neovim5
typescript5
python5
visual-studio-code4
volume-rendering4
Programming languages (9)
Github contributions (5)
callistachang/callistachang
Dec 2020 - Nov 2022
Contributions:19 commits, 1 PR, 17 pushes in 1 year 11 months
callistachang/ValueBasedPricingProgram
Jan 2021 - Feb 2021
Contributions:24 commits in 1 month
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