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KeisukeYamashita

PROFILE

Keisukeyamashita

Yamashita engineered robust cloud infrastructure and deployment automation across the PLATEAU-VIEW and Re:Earth repositories, focusing on secure, scalable asset management and reliable CI/CD pipelines. He migrated legacy deployments to Google Cloud Run, introduced automated Docker-based workflows, and enforced HTTPS for user-facing load balancers using Terraform and GCP primitives. In reearth-visualizer, he streamlined environment configuration and branding through dynamic environment variables and startup-time validation with Shell and Go. His work emphasized operational risk reduction, security hardening, and reproducible builds, resulting in faster, safer releases and improved cross-environment parity. The solutions demonstrated depth in DevOps, containerization, and infrastructure as code.

Overall Statistics

Feature vs Bugs

74%Features

Repository Contributions

53Total
Bugs
8
Commits
53
Features
23
Lines of code
2,667
Activity Months8

Work History

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025: Implemented HTTPS enforcement for user-facing load balancers in PLATEAU-VIEW by provisioning Google Cloud infrastructure to redirect HTTP to HTTPS. The change uses forwarding rules, target HTTP proxies, and URL maps, committed as 51e300e55c6e42359db91a07ba82fd011172ea74. Business value: stronger security, improved user trust, and readiness for TLS compliance with minimal user impact.

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025: Cloud Run preview improvements in reearth/reearth-visualizer by refining the CI/CD workflow to disable default labels in previews (skip_default_labels: true). This reduces label noise in preview environments, improving clarity for stakeholders and speeding feedback loops.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary for PLATEAU-VIEW: Infrastructure cleanup and asset management enhancements focused on operational risk reduction, security, and scalability. The work centered on decommissioning legacy server configurations and establishing cloud-native storage for tile caching and CMS assets to streamline deployments and future feature delivery.

March 2025

4 Commits • 4 Features

Mar 1, 2025

March 2025: Strengthened CI stability and reproducibility across four repositories by pinning the changed-files GitHub Action to fixed commits in forked workflows. This change eliminates upstream drift, reduces flaky builds, and accelerates feedback loops for faster feature delivery and issue resolution.

February 2025

9 Commits • 4 Features

Feb 1, 2025

February 2025 monthly summary focusing on deployment reliability, startup/config validation, and security hardening across multiple repos. Delivered features and fixes that reduce deployment risk, improve startup stability, and enable safer, faster releases. Key commits and implementations spanned CI/CD enhancements for Visualizer, container startup validation, Cloud Build worker pool integration with security improvements, and documentation polish.

January 2025

15 Commits • 4 Features

Jan 1, 2025

January 2025 delivered significant CI/CD automation and deployment reliability improvements across PLATEAU-VIEW, reearth-cms, and reearth-visualizer. Implemented automated Cloud Run deployments, standardized image naming and credentials, and streamlined nightly release workflows. Also introduced startup-time configuration validation and fixed critical tagging and Git attribution issues, driving faster, safer releases and better cross-environment parity.

December 2024

13 Commits • 4 Features

Dec 1, 2024

December 2024 performance summary: Delivered major deployment and configuration enhancements across reearth-classic and reearth-visualizer, emphasizing business value through reliable releases, scalable deployments, and consistent branding. Key outcomes include Dockerizing the web app and modernizing CI/CD, expanding frontend runtime configuration to REEARTH_* variables, fixing branding initialization in Docker, adding environment variables for branding/plugins in Visualizer, and overhauling the release pipeline with Goreleaser v2, artifact preservation, and token workflow cleanup.

November 2024

9 Commits • 4 Features

Nov 1, 2024

November 2024 delivered improved reliability, security, and deployment agility across Re:Earth repositories. Notable work includes secure token management for Cesium Ion, containerized deployment with dynamic branding, and migration-oriented cleanup that reduces operational risk. The team strengthened CI/CD robustness and introduced multi-tenant capabilities to support scalable, configurable deployments for clients and environments.

Activity

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Quality Metrics

Correctness92.4%
Maintainability92.4%
Architecture92.0%
Performance88.0%
AI Usage20.8%

Skills & Technologies

Programming Languages

DockerfileGoHCLJSONMarkdownShellYAML

Technical Skills

AWS ECRBackend DevelopmentCI/CDCloud BuildCloud DeploymentCloud InfrastructureCloud RunCloud Run DeploymentConfiguration ManagementContainerizationDevOpsDockerDocumentationEnvironment ConfigurationEnvironment Variables

Repositories Contributed To

6 repos

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

eukarya-inc/PLATEAU-VIEW

Nov 2024 Aug 2025
6 Months active

Languages Used

YAMLShellHCL

Technical Skills

CI/CDCloud DeploymentGitHub ActionsCloud RunDevOpsDocker

reearth/reearth-visualizer

Nov 2024 May 2025
4 Months active

Languages Used

DockerfileJSONShellYAML

Technical Skills

CI/CDConfiguration ManagementDevOpsDockerEnvironment VariablesGitHub Actions

reearth/reearth-cms

Nov 2024 Mar 2025
4 Months active

Languages Used

YAMLGoShell

Technical Skills

CI/CDCloud DeploymentGitHub ActionsGoogle Cloud PlatformGit ConfigurationBackend Development

reearth/reearth-classic

Dec 2024 Mar 2025
3 Months active

Languages Used

DockerfileJSONShellYAML

Technical Skills

AWS ECRCI/CDCloud RunConfiguration ManagementDevOpsDocker

grafana/alloy

Feb 2025 Feb 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation

reearth/reearth-flow

Mar 2025 Mar 2025
1 Month active

Languages Used

YAML

Technical Skills

CI/CDGitHub Actions