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CJ Jutba

AI-Native Product Engineer.

Overview

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Good evening!

About me

  • I'm CJ, a solo product engineer. I take a founder's idea and turn it into a production-grade web app, SaaS, or internal system, fast enough to test and solid enough to scale.

  • Most builds take months. Mine ship in weeks. Being AI-native means I move at a pace solo developers usually can't, with agents working in parallel and every line reviewed before it ships.

  • My biggest client build so far is a regulated fintech platformThe Fiscplus case study, architecture and outcome included., shipped solo. Auth, payments, dashboards, and the compliance rigor a regulated build demands, end to end.

  • Most recently I built KernelKernel, my Mac app for running Claude Code agents as a team., a Mac app that turns Claude Code into a small software team, and took it from an empty repo to a signed release in eight days. You can see the rest of my workEvery case study I've shipped, Fiscplus included. or how we'd work togetherWhat a project with me looks like, scope to handoff..

  • Away from client work I write about what I'm buildingNotes and build logs on shipping and AI-native work., keep an honest list of the tools I actually useThe hardware, editor, and tools I actually use., and tick things off a bucket listPersonal goals, on the record, some already done. that keeps getting longer.

  • The short version of how I got here is on my about pageHow I got here, background and how I work., and there's a resumeOne page, PDF, opens in a new tab. if you prefer one page.

What I'm building now

Case study
Kernel's Lead chat, with a four-task plan for a PDF export feature waiting for approval

Kernel is a Mac app that turns Claude Code into a small software team. You brief the Lead and approve a plan, and agents build in their own git worktrees, ask before anything risky, and open pull requests that wait for you to merge.

I took it from an empty repo to a signed, self-updating release in eight days. It's the same way I build for clients, with agents doing the typing and me owning the plan, the review and the merge.

Visit kernel.cjjutba.devor read how it was builtThe Kernel case study, how it works and how it was built., or browse the sourceThe full source on GitHub, under the Elastic License 2.0..

Work

All work

What I build

How I work

  • MVP Development

    WebProduct

    A focused first version your users can actually use, built around the core workflow and solid enough to keep once it proves out.

  • SaaS Products

    SaaSMulti-tenant

    Multi-user products with auth, billing-ready foundations, dashboards, data models and the operational pieces real customers need.

  • Internal Tools & Web Apps

    B2BInternal

    Portals, dashboards, admin systems and workflow tools, built around how your business actually operates rather than a generic template.

  • AI Features

    AI

    AI added where it improves the product. Search, chat, summaries, extraction, scoring, and automations with behavior you can test.

Stack

Everything I use

What I build with

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • shadcn/ui
  • NestJS
  • Prisma
  • PostgreSQL
  • Redis / BullMQ
  • Socket.io

What Kernel is built with

  • Electron
  • SQLite
  • Claude Agent SDK
  • Codex app-server
  • xterm.js / node-pty
  • Zod
  • Vitest
  • Playwright
  • electron-builder

Where it runs

  • Vercel
  • Supabase
  • Neon
  • GitHub Actions

Editor and terminal

  • VS Code
  • Claude Code
  • Warp
  • Conductor
  • Docker
  • pnpm
  • Figma

Mobile development

  • React Native
  • Flutter
  • Kotlin
  • Swift

GitHub

Profile

Writing

All posts

Around the site

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CJ Jutba

CJ Jutba

AI-Native Product Engineer · Philippines

I work close to the business problem. What users need, what has to ship first, and what has to stay reliable once people depend on it. There is more about how I got hereHow I got here, background and how I work. if you want the longer version.

I've shipped regulated fintech software, SaaS dashboards, internal tools and MVPs as a solo builder. The goal never changes. Make the product real enough to use, learn from and grow.

Right now I'm taking on freelance work, and I'm open to the right full-time role. If you have a product that needs building, or an internal system that has outgrown its spreadsheet, tell me what you're working on and I'll come back with what I'd do first.

If email is easier, I'm at dev.cjjutba@gmail.comReal inbox, real replies.. How this site was built is written up hereThe build log for this site, stack and decisions included., and the parts I borrowed are credited hereEvery tool, template, and asset this site borrowed..