Harry Sarson
Software Engineer at Codethink
London, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolHarry Sarson is a London-based software engineer with a decade of experience building high-performance embedded systems and backend tooling. He combines low-level systems expertise—contributing to RISC-V emulation and system-call support in a full-system emulator—with higher-level library work, including QR decomposition and vector norm fixes in the widely used mathjs project. His recent roles span startups and engineering consultancies, most recently at Codethink after leading embedded software efforts at Signaloid. Comfortable in Rust, C/C++ and JavaScript, he has a track record of improving correctness, tests and build systems across open-source projects like difftastic. A Cambridge MEng, he’s as focused on clean, auditable code as he is on squeezing predictable performance out of constrained hardware.
10 years of coding experience
5 years of employment as a software developer
Master of Engineering (MEng), Master of Engineering (MEng) at University of Cambridge
Stackoverflow
69reputation
12kreached
7answers
1question
Github Skills (38)
javascript10
tree-sitter10
simulator10
architecture10
computer-architecture10
testing10
risc-v10
cpu-architecture10
math10
maths10
sys10
mathlib10
embedded10
rust10
architectures10
Programming languages (23)
Github contributions (5)
physical-computation/sunflower-embedded-system-emulator
Feb 2019 - Jan 2020
Sunflower Full-System Hardware Emulator and Physical System Simulator for Sensor-Driven Systems. Built-in architecture modeling of Hitachi SH (j-core), RISC-V, and more.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:56 commits, 14 PRs, 33 comments in 11 months
Contributions summary:Harry primarily worked on the "sunflower-embedded-system-emulator" repository, contributing to the emulation of embedded systems, specifically for RISC-V architectures. Their commits focused on low-level system details, including removing whitespace, implementing nan boxing for floating-point numbers, and modifying the instruction set architecture (ISA) for the RISC-V emulator. The user also contributed to supporting RISC-V system calls and improving an example bubble sort program.
architecture-modelingriscv-emulatoremulatorsimulationsimulator
josdejong/mathjs
Nov 2016 - Dec 2020
An extensive math library for JavaScript and Node.js
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 103 commits, 164 PRs in 4 years 2 months
Contributions summary:Harry primarily contributed to the `mathjs` library by addressing documentation errors and improving function implementations. Their work involved correcting return types, fixing examples, and better documenting functions within the algebraic decomposition modules, particularly the `lup` and `qr` functions. The user also implemented the `qr` decomposition and updated the vector norm calculation. They further refined the codebase by ensuring it conformed to node-style-guide standards.
mathmatricesbignumbersmathematical-expressionsnode-js
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