Available for freelance — Prague, Czech Republic

ROMAN PRINC

Full-Stack Engineer

4+ years turning ambitious ideas into shipped products — B2C platforms in production, an award-winning IoT app, and engines that crunch numbers fast. Currently sharpening the craft at CTU Prague.

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01 — About

Not just another
developer.

I'm Roman Princ — freelancer and Software Engineering student at CTU Prague. For the last 4+ years I've been the person companies call when an idea needs to become a product: web, mobile, backend, infrastructure — the whole pipeline.

I've led the build of a B2C commerce platform used in production, wrote a React Native app that controls IoT gateways in the field (and took 5th place nationally for it), and built an Excel engine in C++ because slow software offends me.

I dive deep into rabbit holes, learn whatever the problem demands, and ship. That's the whole pitch.

Quick facts

📍 Based in Prague, Czech Republic
💼 4+ years of experience
🎯 Web apps, mobile apps, and everything between
🏆 National award-winning project (SOČ)
🌱 Perpetually down a new rabbit hole
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Years shipping
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Projects delivered
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Companies trusted me
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Certs & awards

The arsenal.

ReactAdvanced
AngularAdvanced
TypeScriptAdvanced
ElectronIntermediate
C#Advanced
.NETAdvanced
Node.jsAdvanced
PythonAdvanced
C++Intermediate
CIntermediate
React NativeAdvanced
IonicIntermediate
CapacitorIntermediate
PostgreSQLAdvanced
Oracle CloudIntermediate
GitAdvanced
JenkinsIntermediate
WordPressIntermediate

02 — Experience

Where I've shipped.

Software Engineer

February 2025 - Present
Trueslav s.r.o. (Freelance)Now
  • ▹Working mainly on projects using TypeScript, GraphQL and React
  • ▹Developing a kiosk application for a client
  • ▹Looking forward what the future holds
TypeScriptGraphQLReactNext.jsTailwind CSSPostgreSQLDocker

Full Stack Developer

August 2024 - February 2025
FreshPoint s.r.o. (Freelance)
  • ▹Led development of new B2C application using Angular, Ionic, and Node.js
  • ▹Designed application infrastructure and coordinated with sales department
  • ▹Developed cross-platform mobile apps for Android, iOS, and Windows using Capacitor
  • ▹Built Progressive Web Application (PWA) for enhanced user experience
AngularIonicNode.jsTypeScriptCapacitorPWAJenkins

Full Stack Developer

November 2023 - May 2024
Sinfin.digital
  • ▹Developed website for Ivigee using Ruby on Rails framework
  • ▹Fixed bugs and improved functionality on Vyvolej.to / Squared.one platforms
  • ▹Worked with Redis caching and Folio CMS for content management
  • ▹Maintained PostgreSQL databases and optimized query performance
Ruby on RailsRedisFolio CMSPostgreSQL

Full Stack Developer (Erasmus+ Internship)

June 2023 - September 2023
NM Pharma Limited
  • ▹Developed internal system for Excel file processing and web visualization
  • ▹Focused primarily on backend development using C# and .NET
  • ▹Built React components for frontend data presentation
  • ▹Deployed applications on Microsoft Azure cloud platform
ReactC#.NETREST APIAzureMSSQL

Mobile App Developer

May 2022 - September 2023
Statotest s.r.o.
  • ▹Developed React Native app for CHESTER IoT gateway management from scratch
  • ▹Implemented cross-platform solution for both Android and iOS
  • ▹Built features for sensor measurement control and firmware updates
  • ▹Handled low-level communication and extensive REST API integration
React NativeREST APIIoTLow-level Communication

03 — Selected work

Built to be used.

01

Powderline — Browser Snowboarding Game

Endless alpine snowboarding game running entirely in the browser. Terrain, trees, rider and audio are all procedurally generated — no assets to load. Features trick physics with graded landings, rails and kickers, 1v1 multiplayer races, quests, a shop and online leaderboards.

Three.jsReactViteSupabaseWebRTCProcedural Generation
Live project
02

Spotify Statistics Web App

Personal Spotify statistics viewer with data visualization and user insights.

ReactSpotify APIData Visualization
Live project
03

Excel Engine in C++

High-performance Excel processing engine built from scratch in C++.

C++Excel ProcessingPerformance Optimization
Source

Also on the shelf

CHESTER IoT Management App

React Native mobile application for managing IoT gateways. Built from scratch with cross-platform support for Android and iOS. Award-winning project that placed 5th nationally in SOČ competition.

React NativeREST APIIoTLow-level Communication

Image Editor with Fourier Transform

CLI-controlled graphics editor utilizing Fourier Transform for fast filter application. Advanced mathematical algorithms implementation.

PythonFourier TransformImage ProcessingCLI

04 — Credentials

Proof, stamped.

5th place at the 45th national exhibition of High school Vocational Activities in the IT field

SOČ — 2023

React NativeIoTLow-level Communication

Database Design

Oracle — 2024

Database DesignNormalizationSQL

Database programming with SQL

Oracle — 2024

SQLDatabase ProgrammingDatabase Design

Introduction to IoT

Cisco — 2022

IoT

CCNA: Introduction to Networks

Cisco — 2022

Networking

IT Essentials

Cisco — 2022

IT Essentials

Python (Basic) Certification

HackerRank — 2022

Python

05 — Contact

Let's build something
people remember.

Got a product to launch, an app to rescue, or an idea that needs an engineer who actually ships? My inbox is open — first reply is usually same-day.

roman.princ00@gmail.com
Prague, Czech Republic — working worldwide, remote-first

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