Kohsei Nomura
Software Engineer / Site Reliability Engineer
Tokyo, Japan
I love open source.
experience
Woven by Toyota, Inc.Aug 2026 – Oct 2026 (Incoming)
Software Engineer
MIXI, Inc.Mar 2026 - Apr 2026
Site Reliability Engineer
- Responsible for SRE operations for Monster Strike
DMM.com LLCDec 2025
Software Engineer
- Improved latency of API endpoints for an in-house ad delivery system.
CyberAgent, Inc.Nov 2025
Software Engineer
- Built a dedicated load testing environment on GKE cluster for ABEMA TV's advertising delivery system.
LINE Yahoo CorporationAug 2025 – Oct 2025
Software Engineer
- Developed new features for LINE NEWS.
WESEEK, Inc.May 2023 – Current
Software Engineer
- Developed new features and addressed security vulnerabilities for GROWI, an open-source wiki platform.
- Developed software to manage configuration data and resources for one of Asia's largest internet exchanges.
interests
Tooling
NeovimNix
Infrastructure
KubernetesTerraformDocker
Homelab & OSS
Self-hosted serversOpen source
projects
TypeScriptNext.jsexpress.jsMongoDBOSS
- Open-source wiki platform. New feature development and security vulnerability remediation for the editor.
TypeScriptNext.jsRuby on RailsDockerKubernetesArgoCD
- A reading management app to tackle unread tech books. Earn EXP every time you read and visualize your skill growth.
education
Waseda UniversityApr 2023 – Current
B.Eng, Mechanical Engineering
Matsuda Lab
- Fluid dynamics research using Pressure Sensitive Paints (PSP) for automated leak detection in pressure vessels.
- Numerical analysis of physical phenomena.
links
contact