Simon Parry
Freelance Software Engineer at Karoshibee
South Kesteven, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolSimon Parry is a freelance software engineer with two decades of real-world programming experience and a PhD in applied mathematics, blending deep quantitative thinking with practical software delivery. He has built production systems across finance, defence and academia using OCaml, Python, C++ and legacy languages on Linux, macOS and Windows, and currently contributes full-time to smartpy.io. Past roles include tick-to-trade Python development at KCG and quantitative modelling at Fitch and EValue, highlighting strengths in numerical modelling and low-latency trading infrastructure. Comfortable switching paradigms, he maintains active open-source presence (GitHub: KaroshiBee / wyn) and increasingly focuses on OCaml tooling and functional design. A detail often overlooked: his background in government dispersion modelling gives him uncommon expertise in applied simulation and scientific computing for complex, real-world problems.
10 years of coding experience
13 years of employment as a software developer
University College London
Stackoverflow
151reputation
7kreached
1answer
0questions
Github Skills (37)
apl10
taxonomy10
storage10
multicore10
ocaml10
design-principles10
idris10
gleam10
dub10
database10
opam9
decentralization9
blockchain9
dune9
cryptocurrency9
Programming languages (6)
Github contributions (5)
wyn/ocaml
Oct 2019 - Mar 2025
The core OCaml system: compilers, runtime system, base libraries
Contributions:33 pushes, 5 branches in 5 years 5 months
compilersruntime-systemapllwtdub
KaroshiBee/weevil
Jul 2022 - Mar 2023
Contributions:771 commits, 94 pushes, 20 branches in 8 months
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