James Tocknell
PhD Candidate
Sydney, New South Wales, Australia
Summary
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RockstarJames Tocknell is a PhD candidate in astrophysics based in Sydney with 13 years of software engineering experience, blending scientific research with production-grade backend development. He contributes to major scientific open-source projects—most notably enhancing astropy’s I/O registry with a reader/writer priority system and improving h5py’s build robustness via pkg-config support—demonstrating care for both API design and build reproducibility. Comfortable in low-level data workflows and scientific libraries, he focuses on reliable data I/O, testing, and documentation to make complex formats easier to use. His work shows an unusual mix of domain expertise in astronomy and pragmatic engineering practices that reduce friction for downstream users. Colleagues can expect a developer who moves between research-grade code and community-facing library improvements with equal attention to correctness and usability.
13 years of coding experience
Stackoverflow
513reputation
21kreached
10answers
4questions
Github Skills (13)
configuration-management10
astropy10
hdf10
build-system10
python10
astrophysics10
astronomy10
pkg-config10
testing9
pip6
python-path6
easy-install6
h5py6
Programming languages (23)
Github contributions (5)
h5py/h5py
Dec 2014 - Jan 2023
HDF5 for Python -- The h5py package is a Pythonic interface to the HDF5 binary data format.
Role in this project:
Backend Developer
Backend DeveloperContributions:29 reviews, 277 commits, 222 PRs in 8 years 2 months
Contributions summary:James primarily contributed to the h5py project by adding functionality related to build systems and configuration. The commits include the addition of `pkg-config` to build and configure scripts, enabling better detection of HDF5 dependencies. Furthermore, the user implemented checks to handle cases where `pkg-config` is not present, improving the robustness of the build process. These changes enhance the build and configuration process of the HDF5 library for Python.
h5pybinary-datapythondata-formathdf5
astropy/astropy
Jan 2021 - Apr 2022
Astronomy and astrophysics core library
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 reviews, 17 commits, 6 PRs in 1 year 3 months
Contributions summary:James primarily focused on enhancing the `astropy/astropy` library's I/O registry functionality. Their work involved implementing a priority system for readers and writers, allowing for more controlled format selection. They refactored the code to support this new feature, adding tests and modifying existing functions. Furthermore, the user added unit aliases and included necessary documentation.
astrologypythonscienceastrophysicsastrodynamics
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