Nonprofit · Full-stack↗
Jeromos Egyesület
Adoption platform for a dog rescue in Baja, Hungary — dog listings and an adopter-matching tool built to get more dogs into homes.
Next.jsTypeScriptCommunity
I design interfaces
and build the systems behind them
I'm a designer and builder working across web design, AI engineering, data science, and automation — crafting the interfaces and the intelligent systems that power them, end to end.
// about
One person, start to finish
I'm Katalin Pazmány. I bring a finance background to every engagement, which means I start by understanding the business case, not just the interface. I'm complementing that with a Data Science & AI degree at the University of Liverpool, giving me a technical grounding to match. I design and build end to end — interface, backend, and the systems that connect them — so there's no handoff gap between what's designed and what ships. Precision is non-negotiable for me — the kind of detail most people don't notice until it's missing. Recent work includes an adoption platform for a nonprofit dog rescue, a booking site for a family-run boarding kennel, and a ticketing system for a local cinema with live payments and a full CI/CD pipeline.
Next.js◆React◆TypeScript◆Three.js◆Postgres◆Python◆ETL / ELT◆WebGL◆Tailwind◆Framer Motion◆SQL◆Streaming◆Design Systems◆APIs◆Next.js◆React◆TypeScript◆Three.js◆Postgres◆Python◆ETL / ELT◆WebGL◆Tailwind◆Framer Motion◆SQL◆Streaming◆Design Systems◆APIs◆
// what I do
One person, the whole stack
Design and engineering aren't separate steps — I build both, so the interface and the infrastructure move as one.
01 — Foundation
Business & Systems Mapping
Before anything gets designed or built, I map how the business actually works — the structure, the processes, the gaps — so what ships solves the real problem, not a guessed one.
- Process mapping
- Ops audit
- Requirements
- Systems architecture
02 — Identity
Brand
Visual identity built to match how the business wants to be seen — logo, palette, voice, applied consistently everywhere it shows up.
- Visual identity
- Brand guidelines
- Positioning
- Voice & tone
03 — Interface
Web Design & Interfaces
Futuristic, motion-rich interfaces built for real products — from layout to production React, with an obsession for detail and performance.
- Design systems
- Next.js · React
- 3D & motion
- Figma / Framer
04 — Engineering
Systems & Backend
The infrastructure behind the interface — databases, APIs, and the pipelines that move data reliably and keep running without babysitting.
- APIs & databases
- Pipelines
- Cloud infra
- Integrations
05 — Automation
Automation & Workflows
Manual busywork replaced with systems that run themselves — internal ops or customer-facing flows, wired up once and left alone.
- Workflow automation
- Integrations
- Ops tooling
- Scheduled jobs
06 — Intelligence
AI Engineering & Data Science
LLM-powered products that actually ship, and the data work behind good decisions — agents, RAG, model integration, analysis, and visualization.
- LLM apps
- Agents & RAG
- Analysis & ML
- Data viz
// selected work
Things I've built
A few recent projects spanning design, pipelines, and data.
In progress
Coming soon
Something new is in the works — check back soon.
// how I work
From idea to running system
Discover
Map the business — the goal, the process, the people it needs to work for.
// what people say
What people actually say
“Katalin's most defining quality is her unwavering work ethic. She consistently goes above and beyond what is required. She is a proactive thinker who anticipates problems before they arise, ensuring a smooth and efficient workflow.”
“Katalin volunteered to improve our employee communications, creating original PowerPoint templates that exceeded my own expectations. She developed and iterated ideas to produce stunning animated presentations that we continue to use to this day — without seeking any extra recognition.”
“Working with Katalin has been genuinely one of the highlights of my time at Liverpool. She brings a great balance of calm organisation and real technical energy that makes any project run smoother — the kind of person who has things sorted before others have even asked the question.”
// let's build
Have something ambitious in mind?
Whether it's a bold interface, a data pipeline, or the whole thing end to end — let's talk about it.