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
2 years of employment as a software developer
GCE A-Level, H2: Physics, Chemistry, Mathematics, English Literature, H1: General Paper, Project Work, GCE A-Level, H2: Physics, Chemistry, Mathematics, English Literature, H1: General Paper, Project Work at Victoria Junior CollegeDouble Degree in Computer Science and Business, Double Degree in Computer Science and Business at Nanyang Technological University Singapore
English, Chinese, Indonesian
Github Skills (50)
vscode8
vscode-extension8
oanda8
zshrc6
printing6
sap-hana6
keybindings5
fault5
streamlit5
vim5
object-storage5
storage5
visualizer5
machine-learning4
typescript4
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/CZ2001-Algorithms-Notes
Oct 2019 - Oct 2020
Implementation of algorithm pseudocodes in NTU's CZ2001 module
Contributions:15 commits, 2 PRs, 11 pushes in 1 year
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