Los Angeles, CA

I build AI productsfor companieswhere a bad deploycosts real money

I build AI productsfor companieswhere a bad deploycosts real money

Hi, I'm Aga
AI Product Engineer

B2B · Founders, Operators & Investors

Selected work

What I've Built

01
Featured

E-Commerce Platform

Checkout for one of Europe's largest e-commerce platforms. Thousands of orders a day, over a million users.

Under NDA. Details available on request.

1.5 years on a team where a bad deploy had immediate revenue consequences. You learn fast what a decision costs when real money stops moving.

ReactReduxStripeREST APIsTypeScript
02

Claro

Multi-tenant marketplace where each vendor runs their own storefront: separate subdomain, isolated data, payouts through Stripe Connect.

The AI assistant in admin drafts product copy when you ask. It doesn't save unless the output passes validation - because the vendor doesn't want to review garbage, they want to review a draft that's already mostly right.

Next.js 15Payload CMS 3tRPC v11Stripe ConnectClaude API
03

Dotty

Invoice and payment portal for freelancers. You issue invoices, clients pay by card in their own portal. Status updates without the email thread.

Overdue reminders drafted by AI, reviewed by you, sent when you decide. The API key never reaches the browser.

ReactSupabaseStripeAnthropic APITypeScript
04

FunnelScout

B2B SaaS on GoHighLevel: OAuth connect, webhook ingest, weekly Claude analysis per sub-account, Stripe subscriptions, and plan limits enforced before AI spend.

Webhooks stay fast; Inngest carries the long work. Tokens encrypted at rest; every Claude call hits cost_logs.

Next.js 16InngestDrizzleBetterAuthStripeClaude API
05

LA Market Report Agent

Monthly real estate market intelligence workflow built for a private investor in Los Angeles.

Seven data sources. Eight parallel research tasks. A formatted report delivered on schedule every month. No interface, no one pressing a button.

HonoInngestNeonClaude APIPuppeteer
In progress
About

I'm Aga Kadela, an AI Product Engineer based in Los Angeles, CA.

The most expensive mistakes don't throw errors. You don't notice them until the revenue is wrong.

I learned that building checkout systems for over a million users. 1.5 years where downtime wasn't an option. You get a feel for what looks fine but will bite you later.

I bring that to everything I build - the feature in front of me and what happens when real users show up.

I'm in Los Angeles. I build my own products and work with a small number of clients at a time. The kind who need someone to think, not just build.

Aga Kadela

Aga Kadela

What I build

If you know what outcome you need but not what to build - that's usually where I start.

Custom Build

Backend systems and AI agents built around your specific workflow. No UI unless the problem actually needs one.

Explore service →

Production SaaS

Full-stack apps with auth, payments, and tenant isolation that stay correct when usage grows.

Explore service →

AI Integrations

Connect the tools you already pay for and add an AI layer that handles judgment calls, so the work gets done without manual glue work.

Explore service →
Process

How I Work

Scope

I question the brief

Most problems look technical from the outside. Before anything else, I push back on what we're actually trying to solve - because I've seen what happens when nobody does.

Communication

You know where things stand

You hear about what's going on before you have to ask. If something changes, I tell you - not in the next standup, now.

Judgment

I know when not to build

I'll tell you when something isn't worth building. And when there's a simpler way that nobody thought of yet. And when to just wait.

Handover

You leave with something you can own

Not just a codebase. Decisions and context too (so whoever picks this up in six months knows what they're looking at).

Contact

Get in touch

Contact me if you have a real technical problem and no patience for another management layer in the middle. In-person when it makes sense.

FAQ

Common Questions

What does an AI Product Engineer do?
An AI Product Engineer designs and builds complete software systems where AI does real work - not a slide deck bolted on at the end. That includes the backend, data model, auth, payments, and the AI layer that runs within it. The technology is part of the system, not a layer added afterward.
What kind of projects does Aga Kadela take on?
Production SaaS, custom AI agents, and AI integrations for B2B companies. Usually with LA founders or operators who want the technical decisions thought through, not just executed.
Is Aga Kadela available for new projects?
She works with a small number of clients at a time. That's not a scarcity play - that's just what good work actually takes. If you have a real technical problem and a clear picture of what needs to ship, reach out at [email protected].
What industries does Aga Kadela work with in Los Angeles?
Real estate, construction, entertainment production, logistics and other B2B industries where relationships drive deals and the software has to stay accurate when money is on the line. She also builds her own products for the same market.
What is the difference between a standard SaaS and an AI SaaS?
A standard SaaS automates a workflow through a UI. You do the work, the tool helps you do it faster. An AI SaaS has agents that do the judgment work as part of the product - you give it a goal, it returns a result. The work gets done, not handed back to you.