Callum Galbreath
Principal Engineer at Simple Machines
Kaiapoi, Canterbury, New Zealand
Summary
👤
Senior🎓
Top SchoolCallum Galbreath is a Principal Engineer based in Kaiapoi, New Zealand with eight years of professional experience building scalable backend systems and performance-focused solutions across SaaS and enterprise products. He has deep hands-on expertise in C#, Java, Typescript, Python, Go and cloud platforms (AWS, GCP, Azure), and a track record of diagnosing and fixing complex scalability and profiling issues using tools like PerfView, WinDBG and Ants. His career spans roles from software engineer to enterprise architect and now principal engineer, blending architecture, performance engineering and infrastructure-as-code (Pulumi, Terraform). A computer engineering graduate with a continued interest in digital logic and electronics, he also explores agentic systems in DSPy and maintains a technical blog and active GitHub presence, reflecting a curiosity-driven approach to new languages and system designs.
8 years of coding experience
12 years of employment as a software developer
Bachelor of Engineering (BEng), Computer Engineering, Bachelor of Engineering (BEng), Computer Engineering at University of Canterbury
new zealand sign language
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (52)
caching10
computation10
in-memory10
low-latency10
hazelcast10
storage10
linux10
distributed-systems10
java10
distributed-computing10
ruby10
homebrew10
stream-processing10
scalability10
bigtable9
Programming languages (7)
Github contributions (5)
software-is-art/rustboy
Apr 2021 - May 2022
Contributions:91 commits, 78 PRs, 51 pushes in 1 year
software-is-art/hazelcast
Mar 2022 - Aug 2022
Open Source In-Memory Data Grid
Contributions:43 pushes in 4 months
data-gridin-memorymemorygrid
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.