Callum Dunster
Freelance Software Engineer
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolCallum Dunster is a freelance software engineer in Amsterdam with 8 years of deep embedded systems experience, from firmware for smart locks to EV charging software and smart metering RTOS on ARM Cortex devices. He pairs hands-on firmware and PCB design skills with product thinking, having moved into embedded architecture and product ownership at EVBox before returning to freelance work. Callum champions testable, automatable delivery pipelines for embedded software and has practical experience building OTA bootloaders and hardware abstraction layers that meet industry standards like ZigBee PRO and MISRA. Notably, he blends low-level C/C++ expertise with system-level tooling—creating Python GUIs for secure OTA reconfiguration and adapting radio stacks to bespoke requirements—making him comfortable across the full embedded product lifecycle.
8 years of coding experience
11 years of employment as a software developer
Scarborough Sixth Form CollegeBachelor of Engineering with honors (BEng Hons), Robotics and Mechatronics, Bachelor of Engineering with honors (BEng Hons), Robotics and Mechatronics at University of LancashireSecondary school, Secondary school at Headlands School & Community Science College
Github Skills (56)
linux10
distributed-computing10
dapps-development10
holochain10
blockchain10
rust10
p2p10
keystore9
scaffolding9
codegen9
performance-testing9
browser9
holochain-rust9
code-generation9
nodejs9
Programming languages (8)
Github contributions (5)
holochain/release-integration
Jun 2025 - Jun 2026
Integration of third-party release tools with Holochain repositories
Contributions:22 reviews, 5 PRs, 14 pushes in 11 months
holochain
holochain/wind-tunnel-runner
Apr 2025 - Feb 2026
The guide and NixOS configuration for setting up a machine to run Wind Tunnel scenarios
Contributions:1 release, 29 reviews, 19 PRs in 10 months
nixos-configuration
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