poporonnet/kcmsx
Dec 2024 – Oct 2025
3 Months active
Languages Used
SQLTypeScriptJavaScriptBash
Technical Skills
Backend DevelopmentDatabase Schema DesignPrisma ORMTypeScriptAPI DevelopmentConfiguration Management
Tatsuto Yamamoto
PROFILE
Tatsuto Yamamoto
Worked on the poporonnet/kcmsx repository to enhance tournament management features and backend reliability. Over three months, delivered a scalable tournament progression model by introducing parent-child match relationships and updating the database schema using TypeScript and Prisma ORM. Improved match generation logic to support both automated and manual winner determination, aligning rule configurations with competition requirements. Addressed data integrity issues in parent-child relationships and fixed course index selection for preliminary matches. Strengthened authentication by implementing environment-based secret management with Node.js and cryptography best practices. These contributions improved data consistency, deployment flexibility, and the robustness of tournament workflows and authentication flows.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
9Total
Bugs
2
Commits
9
Features
4
Lines of code
1,493
Activity Months3
Your Network
3 peopleShared Repositories
3
Work History
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025: Delivered critical improvements to poporonnet/kcmsx that strengthen competition-day readiness and secure authentication flows. Key changes include a bug fix to use the correct course index for preliminary matches generation, alignment of course configuration with the actual competition plan for the 3rd Matz Crab Robot Competition, and a security-focused enhancement introducing environment-based management of authentication secrets with a generateKey.ts utility and environment-derived JWT/cookie secrets. These contributions reduced misconfigurations, improved test coverage, and enhanced deployment flexibility while demonstrating robust TypeScript/Node.js engineering practices.
3 Commits • 2 Features
Oct 1, 2025October 2025: Delivered critical improvements to poporonnet/kcmsx that strengthen competition-day readiness and secure authentication flows. Key changes include a bug fix to use the correct course index for preliminary matches generation, alignment of course configuration with the actual competition plan for the 3rd Matz Crab Robot Competition, and a security-focused enhancement introducing environment-based management of authentication secrets with a generateKey.ts utility and environment-derived JWT/cookie secrets. These contributions reduced misconfigurations, improved test coverage, and enhanced deployment flexibility while demonstrating robust TypeScript/Node.js engineering practices.
October 2025
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for poporonnet/kcmsx: Key features delivered include tournament-style match generation with winner determination (automatic and manual), data integrity improvements for parent-child relationships, and rule/config alignment.
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) monthly summary for poporonnet/kcmsx: Key features delivered include tournament-style match generation with winner determination (automatic and manual), data integrity improvements for parent-child relationships, and rule/config alignment.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary focusing on strengthening the tournament data model and enabling scalable match progression tracking. Delivered structural enhancements to support parent/child relationships in the MainMatch model, updated database schema and ORM models to support tournament progression, and improved data integrity for match dependencies. These changes lay groundwork for advanced tournament workflows and reporting.
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary focusing on strengthening the tournament data model and enabling scalable match progression tracking. Delivered structural enhancements to support parent/child relationships in the MainMatch model, updated database schema and ORM models to support tournament progression, and improved data integrity for match dependencies. These changes lay groundwork for advanced tournament workflows and reporting.
December 2024
Activity
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Quality Metrics
Correctness84.4%
Maintainability80.0%
Architecture82.2%
Performance71.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashJavaScriptSQLTypeScript
Technical Skills
API DevelopmentAuthenticationBackend DevelopmentConfiguration ManagementCryptographyData ManagementData ModelingDatabase ManagementDatabase Schema DesignEnvironment Variable ManagementGame LogicNode.jsPrisma ORMRefactoringService Implementation
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline