ko-chan

Solo developer building Saru - an open-source multi-tenant subscription management platform. � Tech Stack: - Backend: Go + Echo + sqlc - Frontend: Next.js 14 + TypeScript - Database: Po

Joined on Dec 27, 2025 https://zenn.dev/kochan_saru

ko-chan

Feb 15

Landmines and Solutions in Self-Hosted CI/CD: 15 Runners x Shared Docker Environment [Part 7]

#cicd #githubactions #docker #selfhostedrunner

10 min read

ko-chan

Feb 15

Turning Solo Development into Team Development with Claude Code Agent Teams [Part 8]

#claudecode #agentteam #aidrivendevelopment #solodevelopment

7 min read

ko-chan

Jan 23

Building a 200K-Line SaaS Solo with Claude Code [Part 6]

#claudecode #aidrivendevelopment #solodevelopment #saas

5 min read

ko-chan

Jan 19

3 Pitfalls of Multi-Portal Authentication with Keycloak [Part 5]

#keycloak #authentication #nextjs #authjs

6 min read

ko-chan

Jan 15

PostgreSQL RLS for Multi-Tenant Isolation: Protecting 4-Tier Data as a Solo Developer [Part 4]

#postgres #rls #multitenant #go

8 min read

ko-chan

Jan 14

Next.js + Go Monorepo: Managing 4 Portals 4 APIs as a Solo Developer [Part 3]

#nextjs #go #monorepo #pnpm

6 min read

ko-chan

Jan 13

Testing WebAuthn in CI: E2E Automation with Virtual Authenticators and Mailpit [Part 2]

#e2e #playwright #webauthn #automation

6 min read

ko-chan

Dec 27 '25

Tackling Unmaintainable Complexity with Automation: Building a Multi-Tenant SaaS Solo - Part 1

#automation #solodevelopment #multitenant #claudecode

4 min read

DEV Community

ko-chan

Badges

Writing Debut

Landmines and Solutions in Self-Hosted CI/CD: 15 Runners x Shared Docker Environment [Part 7]

Turning Solo Development into Team Development with Claude Code Agent Teams [Part 8]

Building a 200K-Line SaaS Solo with Claude Code [Part 6]

3 Pitfalls of Multi-Portal Authentication with Keycloak [Part 5]

PostgreSQL RLS for Multi-Tenant Isolation: Protecting 4-Tier Data as a Solo Developer [Part 4]

Next.js + Go Monorepo: Managing 4 Portals 4 APIs as a Solo Developer [Part 3]

Testing WebAuthn in CI: E2E Automation with Virtual Authenticators and Mailpit [Part 2]

Tackling Unmaintainable Complexity with Automation: Building a Multi-Tenant SaaS Solo - Part 1