Hiroshi T.
✓ Vetted CrafterPrincipal Software Engineer – Deployment & Integrations
I build CI/CD pipelines and connect systems — reliable deployments and integrations are my craft.
About
I have spent 13 years building deployment pipelines and system integrations at scale for consumer platforms in Asia. I specialise in CI/CD, Docker, Kubernetes, and connecting services via APIs and webhooks. Cursor helps me write Terraform and debug pipeline failures faster.
My focus is on reliable deployments and integrations: zero-downtime releases, API design, and third-party service connections. I have built pipelines that deploy 50+ times per day safely, integrated 20+ external services, and designed systems that scale. I work with TypeScript, Node.js, Docker, and AWS.
I believe that deployment and integration quality directly impact product velocity. Good pipelines mean teams ship confidently; good integrations mean products connect to the ecosystem.
AI Expertise
Notable Projects
Enterprise CI/CD Pipeline
Designed and built a CI/CD pipeline for a LINE platform serving 180M users. GitHub Actions, Docker, Kubernetes, blue-green deployments. Reduced deployment time from 4 hours to 15 minutes.
✓ 50+ deployments per day; zero incidents in 6 months; team velocity increased 40%.
Third-Party Integrations Platform
Built an integrations platform connecting a Japanese e-commerce platform to 20+ external services: payment gateways, shipping providers, marketplaces. OAuth, webhooks, and sync jobs.
✓ Integration build time reduced from 2 weeks to 3 days per service; 99.9% webhook delivery.
Infrastructure as Code Migration
Migrated Rakuten infrastructure from manual scripts to Terraform. 200+ resources, multi-environment support, documented runbooks. Used Cursor to generate Terraform modules.
✓ Environment drift eliminated; provisioning time from 2 days to 2 hours; full audit trail.
Work Experience
Principal Software Engineer
LINE Corporation
2019 – Present
Own CI/CD and integrations for platforms serving 180M users. Lead deployment strategy and third-party integrations. Use AI tools to accelerate pipeline development.
Senior Software Engineer
Rakuten
2012 – 2019
Built deployment pipelines and integrations for the Rakuten marketplace. Scaled from 5M to 50M active users. Introduced Docker and Kubernetes.
Education & Certifications
M.Sc. Computer Science
University of Tokyo · 2011
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