CJ Jutba

AI-Native Product Engineer

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.

Everything I'm on lives in one placeEvery profile and page, one directory., and there's a guestbookSign in and leave a note, public and permanent. if you want to leave something behind. You can also search the whole siteEvery page, post and section heading, in one field. if you already know what you came for.

You can find me writing code on GitHubcjjutbaGitHubClient builds, side projects, and whatever I am taking apart this week., sharing what I ship on Twitter@cjjutbaX / TwitterShort notes on what shipped, and what broke on the way there., and building my professional network on LinkedInin/cjjutbaLinkedInThe formal version, for the people who need to see one.. For anything else, reach me at dev.cjjutba@gmail.comReal inbox, real replies..

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.

Download it for MacThe latest signed build, for Macs with Apple silicon., 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..

What I build

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.

Works

All work
The Fiscplus admin dashboard, one source of truth for the whole firm
Fiscplus

Compliance-grade portal for accounting firms

Private client
The Quarter landing page, with the readings walk, the unpaid list and a tenant's bill on three phones
Quarter

Rent and meter readings for a boarding house

quarter.cjjutba.dev
The Kalinga landing page, with the clinic's day view beside a photograph of a dog
Kalinga

Booking and recall for vet clinics

kalinga.cjjutba.dev

Start a project

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, 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..