Tim Leslie
Senior Software Engineer Technical Lead at harrison.ai
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolTim Leslie is a Senior Software Engineer and Technical Lead based in Sydney with 20 years of experience building robust, regulated systems across medical devices, research, and education. He blends deep scientific training (BE/BSc and MSciTech in Mathematics) with hands-on expertise in Python, Node.js, embedded C/assembly and ML to deliver end-to-end solutions—from DICOM image processing and firmware CI for Cochlear to full-stack GraphQL CMS platforms. As a pragmatic engineering lead he has hired, mentored and grown teams, led architecture decisions, and translated clinical workflows into production-grade data pipelines and tooling. An active open-source contributor, he has improved testing and maintenance in heavyweight scientific projects like NumPy, SciPy and LAPACK, highlighting a focus on code quality and reproducible science. Tim’s background in computational fluid dynamics and signal-processing tools gives him unusual strength at the intersection of numerical methods and production engineering.
20 years of coding experience
18 years of employment as a software developer
UNSW Sydney
Github Skills (38)
unit-testing10
scipy10
javascript10
maintenance10
back-end-development10
apidoc10
python10
testing10
fortran10
typescript10
blas10
wpgraphql10
numpy10
api10
front-end-development10
Programming languages (12)
Github contributions (5)
keystonejs/keystone
May 2018 - Oct 2021
The superpowered headless CMS for Node.js — built with GraphQL and React
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1623 reviews, 1670 commits, 3684 PRs in 3 years 5 months
Contributions summary:Tim was involved in a variety of tasks, demonstrating proficiency across both front-end and back-end development. They implemented features, fixed bugs and maintained several aspects of the KeystoneJS headless CMS. The user's work focuses on refactoring and improving the functionality and maintainability of various components within the project.
cmscms-frameworkreactnode-jsnodejs
scipy/scipy
Mar 2006 - Dec 2021
SciPy library main repository
Role in this project:Back-end Developer
Back-end DeveloperContributions:155 commits, 2 PRs, 2 comments in 16 years
Contributions summary:Tim primarily focused on improving the codebase by addressing minor errors and inconsistencies. The contributions include fixing variable name typos, removing deprecated features like aliases to NumPy, and removing unused imports to improve code readability. The changes involved modifications to several files within the `scipy/scipy` repository. This suggests a focus on code maintenance and cleanup tasks.
scipypythonscientific-computing
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