I design, build, and ship digital products end to end.

I am Erik Garaj, a full-stack and mobile engineer. I take web and app work from first principle to production.

See the workWork with me
Since 2018
Designing and building
6+
Products shipped
iOS / Android / Web
Platforms
Next.jsReactFlutterTypeScriptFirebaseTailwindCloud FunctionsGSAPNext.jsReactFlutterTypeScriptFirebaseTailwindCloud FunctionsGSAP

Methods are many,
principles are few.

I own the whole stack, from the first data model to the store release. One person who takes an idea to production without handoffs.

More about me

How I build

Idea to shipped, one short loop.

See the system
01 Principle/02 Design and build/03 Ship/04 Repeat

Service for brands

Your brand publishes every day, you only approve.

See the Acquisition Engine

You connect your own accounts. One idea becomes an article, a carousel and a vertical video, delivered to your drafts for approval.

TikTok/YouTube/Instagram/Facebook

Selected work

Real products, shipped to production.

Principle Guy
Live
Fitness platform

A training platform that adapts every workout to your measured Fitness Level.

FlutterDartNext.jsReactVue
View case study
WeDo
Live
Relationships app

A couples app with a native in-app subscription pipeline built from scratch.

FlutterFirebaseCloud FunctionsStoreKit 2Play Billing
View case study
Dôvera Move Challenge
Client project
Fitness campaign

A three-month national activity challenge for a health insurer, powered by Strava.

Strava APIOAuthPythonNext.jsFirebase
View case study
The Hollow Page
Live
Journaling app

A gothic AI journal: a private page that never judges, and three spirits who answer back.

FlutterFirebaseCloud FunctionsGeminiStoreKit 2
View case study
Ethereal
Live
Astrology app

A free astrology app that computes everything on-device: your natal chart, the live sky right now, and how any two charts connect.

FlutterFirebaseSwiss EphemerisDart
View case study
Rovné Zuby
Client project
Healthcare website

A dark editorial redesign for a Bratislava orthodontic clinic, replacing a dated site.

Next.jsReactTypeScriptTailwindGSAP
View case study
Skyro PE Platform
Live
School software

Three systems built for a Bratislava secondary school's PE mentor team: live tournament scoring, student self-evaluation, and a proposal for fully online PE.

Next.jsTypeScriptFirebaseFirestoreVue
View case study
ArtLens
Pre-alpha
Consumer mobile app

See exactly how a piece of art looks on your wall, at real scale, in AR, before buying it.

Flutter
View case study
CINK
Pre-alpha
B2B property management

A personal property manager for landlords and tenants, wherever they go. Currently in development.

FlutterFirebase
View case study
Epix Gym
Live
Gym website and admin console

Website and internal admin console for the hybrid 24/7 gym I co-founded and coach at.

WordPressLaravelLaravel NovaPHP
View case study

More work

AI travel concierge, concept redesign

Charlie, redesigned

Concept

About

Principle first. Shipped, not just designed.

I have been designing and building since 2018. It started with UX at Train this much, a company I co-founded, grew into UX/UI, then Flutter, then the full stack.

Today I found and ship my own products, including Principle Guy, a fitness platform live on iOS, Android, and web. I own the whole stack, from the first data model to the store release. You get one person who takes an idea to production without handoffs.

Methods are many, principles are few. I build on the fundamentals.

Web apps and sites. Marketing sites, landing pages, dashboards, and full web apps in Next.js and React.
Mobile apps. Cross-platform iOS and Android apps in Flutter, including native in-app billing.
Backend and infra. Firebase, Cloud Functions, Firestore, auth, and analytics wired to production.
End to end. From first principle and design through build, launch, and support.

Stack

Frontend

Next.jsReactTypeScriptTailwindGSAPFramer MotionVue

Mobile

FlutterDartStoreKit 2Play Billing

Backend

FirebaseCloud FunctionsFirestoreBigQueryPythonNode

Also

Strava APIOAuthGeminiFirebase Hosting

Contact

Let us build something.