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Mirai SHINJO

PROFILE

Mirai Shinjo

Over nine months, Michael Shinjo developed and maintained the utat-ss/finch-flight-software repository, focusing on embedded systems for Zephyr RTOS. He established a reproducible build system using CMake and West, integrated automated CI/CD pipelines with GitHub Actions, and enforced code quality through static analysis and formatting tools like clang-format. Michael improved onboarding with comprehensive documentation and streamlined environment setup using Bash and Python scripting. He addressed hardware support by refining device tree configurations and enabled deterministic builds through precise dependency pinning. His work emphasized maintainability, compliance, and reliability, resulting in a robust, scalable foundation for embedded flight software development.

Overall Statistics

Feature vs Bugs

87%Features

Repository Contributions

64Total
Bugs
4
Commits
64
Features
26
Lines of code
1,328
Activity Months9

Work History

October 2025

2 Commits • 2 Features

Oct 1, 2025

2025-10 monthly summary for utat-ss/finch-flight-software focusing on stability, reproducibility, and build compatibility through targeted dependency pinning in Zephyr-based integration. Implemented precise Zephyr revision pinning and libcsp pinning to specific commits to support deterministic CI and smoother upgrades with newer Zephyr versions.

September 2025

7 Commits • 2 Features

Sep 1, 2025

Month 2025-09: Strengthened build and CI reliability for the Zephyr-based Finch flight software, while clarifying onboarding and licensing. Delivered robust board_root handling, deterministic dependency installation, and stable GitHub Actions workflows, complemented by documentation improvements that enhance developer onboarding and license visibility.

August 2025

8 Commits • 2 Features

Aug 1, 2025

August 2025: Delivered foundational work for Finch Flight Software focusing on a streamlined development workflow and a modern Zephyr-based build system. This set of changes improves onboarding, build reproducibility, and test readiness, enabling faster feature delivery and more reliable configurations through West-based dependency management and CCSDS123B integration.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary: Key features delivered and bugs fixed across two repositories, focused on kernel memory management stability and code quality improvements. Highlights include a kernel MMU memory-leak fix and the adoption of clang-format for code formatting, enabling consistent styling and faster reviews.

June 2025

7 Commits • 4 Features

Jun 1, 2025

June 2025 monthly delivery for finch-flight-software focused on governance, code quality, onboarding, and CI hardware readiness. Key outcomes include automated Do Not Merge enforcement to prevent accidental PR merges, Devicetree and code quality enhancements to standardize checks across patches, readability improvements in the Getting Started guide to expedite onboarding, and CI expansion to support OBC builds with removal of an obsolete native_sim check, aligning CI with hardware readiness and reducing maintenance overhead.

May 2025

21 Commits • 7 Features

May 1, 2025

May 2025 highlights and outcomes: The team delivered key features and improvements across Finch Flight Software and AmbiqZephyr that drive software quality, faster onboarding, and stronger platform readiness. Specifically, CI and static analysis enhancements improved early defect detection; onboarding docs reduced ramp time for new developers; licensing/compliance hygiene was strengthened to reduce audit risk; governance and DCO processes were tightened to improve code review and identity verification; and Zephyr platform readiness was improved through a major RTOS upgrade and manifest optimization, along with added hardware support to enable hardware recognition and debugging.

April 2025

7 Commits • 3 Features

Apr 1, 2025

April 2025 monthly summary: Delivered automation, quality tooling, debugging support, and security hardening across Finch Flight Software and Zephyr platforms, driving faster onboarding, higher code quality, and stronger platform security with traceable commits.

March 2025

5 Commits • 2 Features

Mar 1, 2025

March 2025 (utat-ss/finch-flight-software): Delivered reproducible development setup and code quality improvements that reduce onboarding time, ensure consistent builds, and strengthen licensing compliance. Implementations include a West manifest for dependency management, a setup README, a project root environment variable script, and a top-level Apache-2.0 LICENSE, plus standardization of C indentation to Linux kernel style to improve readability and maintainability. Major bugs fixed: none reported in this period.

February 2025

5 Commits • 3 Features

Feb 1, 2025

February 2025: Built foundational software delivery capabilities for Finch Flight software and Zephyr-based hardware support across two repositories. Key work included repository hygiene and scaffolding for utat-ss/finch-flight-software, baseline OBC and PAY applications on Zephyr, and a corrective fix to the Nucleo H753ZI device tree to ensure accurate hardware identification. These efforts improve reproducible builds, onboarding velocity, and safety of future feature delivery, enabling faster, more reliable iterations for embedded flight software.

Activity

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Quality Metrics

Correctness94.6%
Maintainability94.6%
Architecture93.8%
Performance91.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashCC++CMakeGit IgnoreMarkdownPerlPythonShellYAML

Technical Skills

AutomationBoard SupportBuild AutomationBuild System ConfigurationBuild SystemsC++CI/CDCMakeCode AnalysisCode DocumentationCode FormattingCode QualityCode Review ProcessCoding Style ComplianceCompliance

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

utat-ss/finch-flight-software

Feb 2025 Oct 2025
9 Months active

Languages Used

CCMakeGit IgnoreMarkdownShellYAMLBashPerl

Technical Skills

CMakeEmbedded SystemsRTOSVersion ControlZephyrZephyr RTOS

AmbiqMicro/ambiqzephyr

Apr 2025 May 2025
2 Months active

Languages Used

CMakeCPythoncmake

Technical Skills

Build SystemsC++SecurityBoard SupportCI/CDDevice Tree

telink-semi/zephyr

Feb 2025 Feb 2025
1 Month active

Languages Used

C

Technical Skills

Device TreeEmbedded Systems

nrfconnect/sdk-zephyr

Jul 2025 Jul 2025
1 Month active

Languages Used

C

Technical Skills

Kernel DevelopmentMemory Management

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