Takashi Mima
SWE at Mercari, Inc.
Tokyo, Japan
Summary
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SeniorTakashi Mima is a Tokyo-based software engineer with 9 years of experience specializing in backend development and a strong interest in web security. Proficient in Go and Python, he has shipped production services across multiple Japanese tech companies and currently works at Mercari. He contributes to prominent open-source projects like TheAlgorithms/Go, where he improved test coverage and refactored cryptographic cipher implementations—demonstrating a focus on code quality and testability. His background spans payments, recommendation and ad delivery systems, and security-focused tooling, giving him a practical blend of performance-minded backend engineering and security awareness. Contact: tks.m1205+linkedin[at]gmail.com or https://task4233.dev.
8 years of coding experience
Github Skills (7)
algorithm10
data-structures10
algorithms10
go10
data-structure10
test-automation10
testing10
Programming languages (18)
Github contributions (5)
TheAlgorithms/Go
Jan 2021 - Jan 2021
Algorithms and Data Structures implemented in Go for beginners, following best practices.
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:3 reviews, 8 commits, 5 PRs in 2 days
Contributions summary:Takashi primarily contributed to testing and improving existing algorithms and data structures implemented in Go. They wrote comprehensive tests for the `polybius`, `caesar`, and `xor` ciphers, ensuring high code coverage. Additionally, the user refactored the `xor` package and fixed issues in the `rot13` cipher. Their work focused on code quality, testability, and completeness of implementations within the repository's core focus on algorithms and data structures.
golangpreparationdatastructuresleetcodefollowing
task4233/malgrapher
Nov 2020 - Jan 2022
makecfg is a tool for making CFG(Control Flow Graph) from binary.
Contributions:2 reviews, 73 commits, 16 PRs in 1 year 1 month
control-flow-graphcontrol-flowcfgpython3gdb
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