Marcus Lewis
Software Engineer at Numenta, Inc.
San Francisco, California, United States
Summary
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Rockstar🎓
Top SchoolMarcus Lewis is a software engineer and researcher with 12 years of experience blending machine learning, neuroscience, and scientific computing to improve the user/code interface for research workflows. He spent six years at Numenta contributing to core HTM algorithms and C++ encoders, and his open-source work includes meaningful fixes and tests in notable repos like nupic-legacy and nupic.core. A former Microsoft SDET and product-minded engineer, he combines deep technical rigor with a focus on testability and practical correctness. Currently based in San Francisco, he runs the vexpr.org project and pursues hunch-driven experimentation to translate neuroscience insights into better developer tools. An unusual strength is his habit of stepping back—periods of sabbatical and reflection have informed his experimental approach to neural models and tooling design.
12 years of coding experience
10 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at University of Michigan
Github Skills (8)
unit-testing10
algorithms10
c-language10
cprogramming-language10
python10
back-end-development10
testing9
artificial-intelligence9
Programming languages (9)
Github contributions (5)
numenta/nupic.core-legacy
Feb 2016 - Jul 2019
Implementation of core NuPIC algorithms in C++ (under construction)
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:5 releases, 268 commits, 111 PRs in 3 years 5 months
Contributions summary:Marcus's contributions focused on implementing and testing core NuPIC algorithms in C++. Their work included the creation of a C++ Encoder base and the implementation of a ScalarEncoder, including the porting of corresponding unit tests. Further enhancements were made to improve the boundary checking and validation of the scalar inputs, documented through newly added tests to ensure correctness.
cppnupic
numenta/nupic-legacy
May 2014 - Jun 2017
Numenta Platform for Intelligent Computing is an implementation of Hierarchical Temporal Memory (HTM), a theory of intelligence based strictly on the neuroscience of the neocortex.
Role in this project:Back-end Developer
Back-end DeveloperContributions:81 commits, 40 PRs, 12 pushes in 3 years
Contributions summary:Marcus contributed to the `nupic-legacy` repository, which focuses on Hierarchical Temporal Memory (HTM) implementations. Their commits primarily address bug fixes and feature enhancements related to the swarming and the core network functionality of the HTM platform. The user's changes include handling cases for directory paths, addressing inconsistencies in the demo code, and updating core encoders.
hierarchical-temporal-memoryneocortexartificial-intelligencemachine-intelligence
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