Takuya Ohta
Sr Solution Engineer (Security) at マイクロソフト
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolTakuya Ohta is a senior solutions engineer specializing in cloud endpoint security at Microsoft, bringing 15 years of hands-on support and pre-sales experience across Windows, Microsoft 365, EMS, and Azure. He holds CISSP and CEH certifications and has progressed from frontline support and escalation management into technical specialist and leadership roles, blending deep troubleshooting skills with customer-facing solution design. An active open-source contributor, he has practical ML and backend experience demonstrated by contributions to Optuna and Erlang/OTP—showing an ability to bridge security, systems, and data workflows. Based in Chiyoda, Japan, he pairs technical rigor with people leadership, having spent six years as a manager and five years in pre-sales engineering. Off-hours he teaches snowboarding as an instructor for the Japan Snowboarding Association, reflecting a penchant for hands-on coaching and calculated risk-taking.
15 years of coding experience
14 years of employment as a software developer
Bachelor Electronic information systems, Bachelor Electronic information systems at University of Yamanashi
Stackoverflow
241reputation
5kreached
3answers
0questions
Github Skills (19)
erlang10
python10
testing10
machine-learning10
parameter-tuning10
hyperparameter-optimization10
build210
lightgbm10
dialyzer10
dependency-analysis9
dependency-manager9
dependency-management9
concurrency9
packager8
package8
Programming languages (12)
Github contributions (5)
optuna/optuna
Nov 2018 - May 2022
A hyperparameter optimization framework
Role in this project:
ML Engineer & Data Scientist
ML Engineer & Data ScientistContributions:8 releases, 123 reviews, 1033 commits in 3 years 7 months
Contributions summary:Takuya primarily contributed to the example code that optimizes hyperparameters for machine learning models, specifically using LightGBM. Their work included the implementation of a user-defined class for handling an objective function in AllenNLP, showcasing expertise in integrating machine learning models, data pipelines, and hyperparameter tuning frameworks within a single project. They were responsible for building example code to show users how to prune trials in a LightGBM model. Additionally, the user made adjustments to improve the user-friendliness of the example code, including formatting and comments.
pythonoptimization-frameworkparallelhyperparameteroptimization
erlang/otp
Apr 2022 - Sep 2022
Erlang/OTP
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 5 commits, 5 PRs in 4 months
Contributions summary:Takuya contributed to the Erlang/OTP project by fixing bugs and implementing new test cases related to the Mnesia database. They addressed a read lock issue in `mnesia:add_table_copy/3` and added a test case to cover a specific scenario. Furthermore, they fixed an issue related to `file:read(standard_io, ..)` returning `eof` unexpectedly and addressed a bug with `prim_socket:cancel/3` in the emulator.
gleamerlangbeamerlang-otpelixir
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