Los Angeles, CA

I build and fixAI productswhere bad deployscost real money

I build and fixAI productswhere bad deployscost real money

Hi, I'm Aga
AI Product Engineer

B2B · Founders, Operators & Investors

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Portfolio

A few things I've built, fixed, and rescued

01
Featured

E-Commerce Platform

SaaS

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

Under NDA. Details available on request.

1.5 years on a team where a bad deploy meant revenue stopped moving. You learn fast what a decision costs in production.

ReactReduxStripeREST APIsTypeScript
02

Dotty

Launch Readiness

Invoice and payment portal for freelancers. Built fast for validation - I audited it before launch and fixed what would have broken under real money.

Audit caught Stripe double-charge risk, invoice numbering under concurrency, Pacific Time off-by-one dates, secrets in the tree, missing CORS on Edge Functions, and a pile of dependency vulnerabilities - then I shipped fixes plus a severity-ranked report.

ReactSupabaseStripeAnthropic APITypeScript
Read case study →View live →
03

FunnelScout

SaaS

B2B SaaS for agencies on GoHighLevel. Connect an account, get weekly AI analysis, and keep spend under control before the model burns through credits.

The hard part was not the AI. It was making sure the product stayed fast, the analysis ran on schedule, and usage stayed inside the plan people paid for.

Next.js 16InngestDrizzleBetterAuthStripeClaude API
Read case study →View live →
04

LA Market Report Agent

AI Agent

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

Seven data sources. Eight research tasks running in parallel. One report delivered every month without someone stitching it together by hand.

HonoInngestNeonClaude APIPuppeteer
In progress

When it breaks

Something broke?

Real users showed up and something isn't right. Stripe is double-charging. Someone saw data they shouldn't have. The app that worked fine in the demo is throwing errors in production.

I've seen it before.

Email me now at [email protected] and tell me what's happening. I'll get back to you today.

Email me now
About

I'm Aga Kadela. AI Product Engineer in Los Angeles.

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 touch. What's in front of me and what happens when real users show up.

I'm in Los Angeles. I work with a small number of clients at a time. Usually people who want the thinking done, not just the code written.

Aga Kadela

Aga Kadela

What I do

Before You Build

Get the architecture right before AI locks in the wrong patterns. One conversation, then a written plan - before the first prompt.

Explore service →

Launch Readiness Sprint

Built it fast - now make sure it is safe to ship. I go through what you built the way a bad actor would, before your users do.

Explore service →

Production Rescue

Something broke - real users are affected. Not a process: the specific fault, fixed, plus a clear read on what went wrong.

Explore service →

Custom AI Build

You know the outcome you need - I build the system that gets you there. For when you want it solved and running, not another prototype.

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. Sometimes there's a simpler path. Sometimes we should wait.

Handover

You leave with something you can own

You leave with a codebase you can actually own. Fixed, explained, and not dependent on me to maintain it.

Contact

Get in touch

If you have a real technical problem and no patience for another management layer in the middle, email me at [email protected].

[email protected]LinkedIn →GitHub →
FAQ

A few things people ask

My app is already built and something is broken - can you help?
Yes, and honestly that's half of what I do. You have something running, real users are showing up, and something isn't right. I go through what's there and fix it. You also get a short written explanation of what was wrong - so it doesn't happen the same way again. No need to start over.
What does an AI Product Engineer do?
I build software where AI does real work inside the product. That means the backend, the data model, auth, payments, and the AI layer too. If it only works in a demo, it isn't finished.
What kind of projects does Aga Kadela take on?
I work on new products and broken ones. Usually B2B teams where the workflow is already real and mistakes are expensive.
Is Aga Kadela available for new projects?
I work with a small number of clients at a time. That's just what good work takes. If you already know there's a real problem to solve, email me at [email protected].
What industries does Aga Kadela work with?
Mostly B2B. Real estate, construction, entertainment production, logistics. Businesses where the work is operational and the software has to stay accurate.