Samuel Wallan
Software Engineer II at Amazon Web Services (AWS)
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolSamuel Wallan is a Software Engineer II at AWS working on Simple Email Service Deliverability with seven years of experience building secure, time-conscious systems. A Cal Poly San Luis Obispo software engineering graduate, he blends production cloud engineering with deep open-source contributions—most notably adding tests and Fortran-based LAPACK wrappers to the widely used SciPy library. Samuel has a track record of automating investigator workflows (saving hours per week at AWS) and improving numerical library performance via MLE and benchmarking work during his research role. He favors succinct, test-driven solutions that scale, and brings both hands-on implementation and an eye for improving developer tooling and test coverage.
7 years of coding experience
3 years of employment as a software developer
California Polytechnic State University, San Luis ObispoInternational Baccalaureate Diploma, High School Diploma, International Baccalaureate Diploma, High School Diploma at Berkeley High School
Spanish, English
Github Skills (6)
unit-testing10
scipy10
pytest10
python10
numpy10
test-automation10
Programming languages (7)
Github contributions (5)
scipy/scipy
Dec 2019 - Sep 2022
SciPy library main repository
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:244 reviews, 69 commits, 28 PRs in 2 years 9 months
Contributions summary:Samuel primarily contributed to adding and updating tests for the `scipy/scipy` repository, specifically targeting the `?gttrf` and `?gttrs` Lapack routines and, later, `?geqrfp`, `?gejsv` and `?ptsvx`. The changes included the addition of more tests, improved error handling, parametrization, and example implementations from external resources such as the NAG manual. The work involved modifying test assertions, test data generation and organization, and a small amount of refactoring to improve testing effectiveness.
scipypythonscientific-computing
swallan/scipy
Dec 2019 - May 2022
Scipy library main repository
Contributions:2 reviews, 13 PRs, 392 pushes in 2 years 6 months
scipypython
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