Software Engineer & Co-Founder @ WebWind

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Marceli Karman

Is here

Co-Founder & Web Developer building B2B web applications in Next.js, Python & TypeScript with a strong focus on cybersecurity & AI.

Next.js & ReactTypeScript & Python Cybersecurity
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Marceli Karman

Marceli Karman

Co-Founder @ WebWind Software House

Lublin, Poland 🇵🇱•17 years old

Web developer and co-founder passionate about building high-performance B2B web applications, exploring AI, and practicing cybersecurity.

Download / Request Full CV

Languages

🇵🇱 Polish(C2)
🇬🇧 English(C1)
🇩🇪 German(B2)
🇪🇸 Spanish(A1)

Beyond Code & Interests

Cybersecurity & OWASP: Deep interest in web app security, penetration testing basics (Burp Suite, Nmap), and secure coding standards.

Gym & Powerlifting: Dedicated to athletic training, discipline, and consistent self-improvement.

Economics & Polyglotism: Fascinated by market dynamics, efficient optimization, and learning foreign languages.

Professional Experience & Education

Co-Founder & Web Developer

05.2024 - Present
WebWind Software House•Poland (Remote / Hybrid)

Co-founding a software house specializing in B2B web application development. Responsible for client consultation, system architecture design, and frontend/backend development with Next.js, TypeScript, and Python.

Next.jsTypeScriptPythonTailwind CSSREST APIDocker

IT Intern / Developer

05.2024 - 06.2024
JBB Bałdyga•Łyse, Poland

Developed an internal contractor and vendor management system using React and PHP, streamlining administrative workflows and data processing.

ReactPHPMySQLJavaScriptREST API

IT & Cybersecurity Student

09.2023 - Present
TechniSchools High School•Lublin, Poland

Specialized high school education focused on computer science, advanced software engineering, Python application development, and cybersecurity fundamentals.

PythonLinuxCybersecurityNetworkingAlgorithms

Software Engineering Mindset

I believe in clean code, scalable architecture, and proactive security. By combining frontend aesthetics with solid backend logic and security practices (OWASP), I build applications that deliver real business value for clients and users.

I am continuously developing my skills in various technologies to create modern and efficient web applications.

Frontend

HTML5

Full understanding and experience in HTML best practices, including semantics, accessibility, and SEO.

4+ years experience
Frontend

CSS3

Proficiency in CSS, including Flexbox, Grid, animations, Media Queries, and RWD.

4+ years experience
Frontend

Tailwind CSS

Experience using utility-first CSS to rapidly build responsive interfaces.

1+ year experience
Frontend

JavaScript

Experience with ES6+, asynchronous operations, DOM manipulation, and creating interactive web applications.

4+ years experience
Frontend

TypeScript

Using types for safer and more predictable code in applications.

1+ year experience
Frontend

React.js

Creating reusable components, state management, and application lifecycle.

1+ year experience
Frontend

Next.js

Using the framework to build applications with SSR, SSG, and ISR capabilities.

1+ year experience
Backend

Node.js

Building servers and APIs using the JavaScript runtime environment.

1+ year experience
Backend

Express.js

Creating REST APIs and server applications using the minimalist framework.

1+ year experience
Backend

Python

Developing scripts, backend APIs, automation tools, and data solutions.

4+ years experience
Backend

FastAPI

Building high-performance Python REST APIs with asynchronous endpoints.

2+ years experience
Backend

PHP

Building backend systems and contractor management software for enterprise environments.

1+ year experience
Backend

Firebase

Implementing real-time databases, authentication, and cloud functions for web and mobile applications.

1+ year experience
Backend

PostgreSQL

Designing relational database schemas, complex queries, and data management for web apps.

2+ years experience
Backend

SQL / MySQL

Creating and managing relational databases, complex queries, and data structures.

4+ years experience
Backend

MongoDB

Designing and querying NoSQL databases for efficient application data storage.

1+ year experience
Design

Figma

Designing and prototyping user interfaces for web and mobile applications.

2+ years experience
Design

Adobe XD

Creating wireframes and mockups for digital projects.

2+ years experience
Tools

Git

Proficiency in version control systems, repository management, and team collaboration.

2+ years experience
Tools

Docker

Containerizing web applications and services for consistent deployment and local dev.

1+ year experience
Tools

Linux & Security

Linux system administration, shell scripting, OWASP web security practices, and Burp Suite basics.

2+ years experience
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Live showcase of my open-source projects, web applications, and experimental repositories synchronized directly with GitHub.

View Full Profile on GitHub →
TypeScript

Marceli-Karman-Portfolio

Modern, high-performance developer portfolio built with Next.js 15, React 19, TypeScript, Tailwind CSS v4 & Framer Motion.

#nextjs#react#typescript#tailwindcss
5 1
TypeScript

Man-Do

Next.js Web application for tracking athletic progress, sports activities, and daily habit routines with Firebase integration.

#nextjs#react#firebase#tailwind
3
Python

PyQuest

Interactive Python educational platform designed for learning programming concepts through gamified quests and challenges.

#python#education#web#interactive
4 1
JavaScript

TechniBank

Full-featured banking web application simulation built with secure authentication and transaction handling.

#javascript#web-app#banking#finance
2

I'm always open to new opportunities, collaborations, or just a friendly chat. Feel free to reach out through any of the channels below.

Email

marcelikarman1@gmail.com

Phone

+48 575 881 967

GitHub

Karman1818

LinkedIn

Marceli Karman

Let's Talk About Your Project

Have a project in mind? Want to collaborate? Or just want to say hi? Fill out the form, and I'll get back to you as soon as possible.

Response Time

I typically respond to all messages within 24-48 hours. For urgent matters, please indicate in your message.

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