Jack Rickard
Software Engineer at Jane Street
Enfield, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolJack Rickard is a senior software engineer with 11 years of experience building high-performance, high-availability systems across networking, cryptography, and distributed systems. He has led teams and shipped production services at scale—most notably a Rust-based STIR/SHAKEN service handling billions of calls and an LLM-driven, geo-redundant scam detection system at Microsoft. Deeply fluent in Rust and C#, he contributes to notable open-source projects like salsa-rs and rust-openssl, where he improved incremental computation tooling and hardened OpenSSL bindings. Jack combines low-level systems engineering (CPU emulation, graphics, language runtimes) with practical product delivery, and has a knack for turning research-level ideas—language design, garbage collection, TLS automation—into reliable production features. He holds a mathematics degree from Cambridge and brings an unusual mix of protocol standards work (IETF/ATIS) and competitive cryptography experience to every project. Always curious, he enjoys tackling the parts of systems others avoid and mentoring teams to do the same.
11 years of coding experience
5 years of employment as a software developer
Bachelor's degree, Mathematics, Bachelor's degree, Mathematics at University of Cambridge
Github Skills (21)
minecraft10
incremental-processing10
testing10
macros10
data-structure10
java10
javas10
mixins10
openssl10
cryptography10
data-structures10
increment10
rust10
spongeapi10
concurrency9
Programming languages (13)
Github contributions (5)
SpongePowered/SpongeForge
Dec 2014 - Mar 2015
A Forge mod that implements SpongeAPI
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits, 6 PRs, 17 comments in 2 months
Contributions summary:Jack primarily worked on implementing and improving the SpongeForge mod, focusing on core features related to the Minecraft API. Their contributions included adding mixins for enchantments, addressing issues raised in the IRC, resolving table-related problems, and fixing issues related to ID retrieval. The user also worked on a fix to ensure all relevant features were working in the code.
forgeminecraftgradlemixinsmod
salsa-rs/salsa
Aug 2022 - Sep 2022
A generic framework for on-demand, incrementalized computation. Inspired by adapton, glimmer, and rustc's query system.
Role in this project:Back-end Developer
Back-end DeveloperContributions:13 reviews, 15 commits, 6 PRs in 28 days
Contributions summary:Jack primarily contributed to the development of the `salsa-rs/salsa` repository, a framework for incremental computation in Rust. Their work focused on enhancing the macro system for creating tracked methods, a core component of the framework. They added support for constant tracked functions and addressed race conditions within the interning mechanism. Furthermore, they implemented and refined the on-demand input feature.
computationqueryincrementalon-demandrust
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