Kleczewsky
01
About
I turn complex business requirements into scalable, high-performing products: from healthcare platforms for a national retail brand to a SaaS system carrying 200k monthly users.
Stack
Most of what I build is PHP and Laravel, with FilamentPHP and clean architecture underneath. On the frontend I adapt to what the project needs: React, or Laravel's own Blade and Livewire.
Constraints
I like problems where the constraint is real. A booking widget that has to render correctly inside a stranger's stylesheet. A directory of several hundred entries where the whole product is whether someone can find the right one. A payment flow where the failure mode is somebody's medication.
Outcomes
I focus on measurable outcomes: I've cut load times by 80% on a core booking flow, cleared out years of legacy technical debt, and taken features from the first sketch through to production. I read the docs, write the tests for the paths that carry money, and put error reporting in before the first incident rather than after it.
- Scale200KMonthly users on the SaaS platform I work on.
- Speed80%Cut from a core booking flow's load time.
- Triage15 minTo clear a problem that had blocked a team for weeks.
02
Hire me for
Three things I get asked for most. Fixed scope or ongoing, both work.
Production Laravel systems
Booking flows, payments, admin panels somebody uses for eight hours a day. Laravel with Livewire and FilamentPHP, on clean architecture, built to be handed over and maintained.
Front-ends that have to behave
React interfaces, embeddable widgets that render correctly inside a stranger's stylesheet, and WebGL where the interface actually earns it.
Taking over a system that already exists
Inheriting a codebase and making it stable: clearing years of technical debt, cutting a core flow's load time by 80%, and putting error reporting in before the first incident rather than after it.
03
Work
Products that are live, carrying real traffic, and still being changed.
Zjedz.my
A restaurant booking platform I helped scale: cut the core search flow's load time by over 80%, shipped the React Native app end to end, and built out chat, reviews and the Reserve with Google integration.
04
What I work with
The tools I reach for first, and what I actually use each of them for.
- Laravel
- Most of what I ship. Queues, scheduled work, and the admin somebody uses all day.
- Livewire · Filament
- Interactive panels without a second codebase to keep in sync.
- React · TypeScript
- For interfaces with real client state, and for anything embedded in a page I do not own.
- WebGL · three.js
- Where the interface earns it. This page is the example.
05
Lab
Small self-contained experiments: canvas, shaders, motion. Each one runs live and ships its source.
06
Contact
Open to contract work and full-time roles. The fastest way to reach me is email.