ArgoCD Platform
Large-scale CD platform serving 1,800+ users and 10,000+ applications. Led scaling, reliability (99% uptime), DR design, and team management as service owner.
Kubernetes · ArgoCD · Terraform · Prometheus · Go
// DEVOPS / SRE ENGINEER
Sun @asuforce
Shun NISHITSUJI
10+ years in DevOps and SRE. Specializes in large-scale Kubernetes infrastructure, CI/CD platform engineering, and engineering management.
35.6762° N
139.6503° E
SKILLS
Languages
- Go
- Ruby
- Python
- TypeScript
Container / Infra
- Kubernetes
- Docker
- Terraform
Observability
- Prometheus
- Grafana
- Fluentd
Cloud
- AWS
- GCP
- Cloudflare
CI / CD
- GitHub Actions
- ArgoCD
Frontend
- React
- Vue.js
- Vite
WORKS
Distributed Load Testing Tool
Built a distributed load testing tool in Go on Kubernetes, enabling 10x scale performance testing across multiple services.
Go · Kubernetes · Docker
asuforce.com
This portfolio site. Static site with Marathon-inspired graphic realism design.
Vite · TypeScript · CSS
View on GitHubCAREER
Mar 2026 – Present
Product Engineer
SmartHR, Inc.
Oct 2023 – Feb 2026
DevOps Engineer / EM
LY Corporation
Led the ArgoCD platform team as service owner and engineering manager. Scaled the platform from 850 to 1,800+ users and 10,000+ applications. Designed DR/BCP systems, introduced horizontal scaling, and built team onboarding processes.
Jun 2018 – Sep 2023
SRE / EM
LINE Corporation
Managed multi-service infrastructure for LINE Baito and LINE LIVE. Led Kubernetes (VKS) adoption, built a distributed load testing tool in Go, and introduced ArgoCD across the organization (850+ apps, 480+ users). Promoted to engineering manager, reducing inquiry response time by 50%.
Apr 2016 – May 2018
Infrastructure Engineer
GMO Pepabo, Inc.
Operated large-scale infrastructure for minne (300 servers, millions of users). Led a deploy optimization project that cut deployment time by 50% (50 min → 25 min). Designed and ran a 6-month onboarding program for new graduate engineers.