Jamie Quadri
Summary
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RockstarJamie Fu is a quantitative trader and MIT-trained computer scientist based in New York with 12 years of experience blending software engineering, machine learning, and quantitative research. At Citadel Securities he transitioned from intern to trader, applying data-driven insights across ETF and SSO markets while drawing on deep backend and distributed-systems expertise honed at Bloomberg, Square, and Microsoft. Jamie’s research background spans computational psycholinguistics and medical imaging, and he has contributed to the Swift compiler improving unreachable-code diagnostics—an indicator of his comfort working in low-level, correctness-critical code. Outside work he trains for half-marathons, writes broadly on technical and cultural topics, and brings interdisciplinary curiosity (philosophy, anthropology, game theory) to complex trading and engineering problems.
12 years of coding experience
Github Skills (7)
swift10
intermediate-language10
compiler-development10
abstract-syntax-tree9
diagnostics9
testing8
concurrency8
Programming languages (11)
Github contributions (5)
swiftlang/swift
Jul 2021 - Jul 2026
The Swift Programming Language
Role in this project:
Back-end Developer
Back-end DeveloperContributions:121 reviews, 44 PRs, 9 pushes in 5 years
Contributions summary:Jamie contributed to the Swift programming language project by addressing several issues related to compiler diagnostics and code correctness. Their work focused on improving the detection and handling of unreachable code, specifically for opened existentials and in defer statements. They also unified missing return diagnostics within the compiler, ensuring more consistent behavior across different scenarios. The changes involved modifications to both the core compiler infrastructure (SILGen, Sema, AST, SILOptimizer) and associated test cases.
programming-languageswift
jamieQ/swift
Jul 2021 - Jul 2026
The Swift Programming Language
Contributions:75 pushes, 100 branches in 5 years
swift-programmingswift-programming-languageprogramming-languageswift
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