About Me
A Quick Dive Into My Journey
Hey, I'm Marcel — a Full-Stack Software Engineer (Next.js / TypeScript / Django / React) with ~5 years of experience.
Data Science graduate with hands-on analytics and ML foundations: Python (Pandas/NumPy), SQL, ETL/scrapers, basic modeling (regression/classification), and experiment-driven thinking (metrics, A/B).
I ship scalable apps end-to-end—from clean DRF APIs and PostgreSQL to fast SSR UIs—focused on performance, reliability, and measurable impact.
I also enjoy learning C++ and low-level internals (x64 basics) to better understand performance, memory, and how things work under the hood.
7+
Years of Programming
5+
Years of Professional Experience
3+
Shipped Commercial Projects
15+
Personal Projects
5+
Freelance projects
I ran a product photography studio for two years — which means I've spent more time in Photoshop than I'd like to admit. From setting up lights to handling clients, it taught me a lot about visual storytelling, teamwork, and making pixels look pretty.
Experience
Career.exe Successfully Running
Vixon Media
Full-Stack Software Engineer
12.2020 - Present
Poland, Ostrow Wielkopolski
• Automated repetitive graphic design tasks with Python (PyAutoGUI), cutting per-asset time from ~2 hours to less than 5 minutes and significantly boosting team throughput.
• Rebuilt billboard asset & campaign management from Google Sheets into a React/Next.js + PostgreSQL app, reducing offer creation from 10+ minutes to a single button action.
• Maintained vixonmedia.pl and coordinated with an external marketing partner to boost visibility across the city and region-achieving +10,000 Facebook visits per month and ~300 monthly site visits.
• Managed a 60,000+ SKU product database in Subiekt GT; wrote advanced SQL for marketing analytics, logistics coordination, and automated reporting.
• Built python scrapers (BeautifulSoup + Selenium) to pull supplier data, cutting product add time to our database from ~10 minutes to seconds.
• Integrated Subiekt with BaseLinker and automated key sales workflows to reduce errors across order → shipping. Kept ~99.9% positive reviews and “Super Seller+” status on Allegro. Automated messages response time dropped from hours to minutes. Auto-published products from Subiekt → Allegro (no manual steps). Streamlined ops cut sales team size from 10 to 6.
• Automated key spreadsheets with Google Apps Script, cutting manual steps in cataloging/finance/logistics and lowering error rates.
Fotovix
Founder & Owner
10.03.2021 - 01.06.2023
Poland, Ostrow Wielkopolski
• Founded and ran a commercial photography studio specializing in product shots, 360° animations, and graphic design for e-commerce and marketing.
• Built and retained client relationships (incl. Litex Promo, 3mk, Olejnik), delivering on time and within budget with repeat engagements.
• Mastered studio workflows (lighting, staging) and post-processing (Photoshop/Illustrator/Canva) to produce consistent, high-impact visuals.
• Applied a UX/brand lens to creative direction, increasing product appeal and improving presentation across digital channels.
• Strengthened communication and project coordination skills, translating business goals into clear visual deliverables.
Enso Group
Internships
09.2017 - 10.2017
Great Britain, Clevedon
• Contributed to a full-stack WordPress site in a multicultural team-front-end styling and CMS configuration while practicing remote collaboration and cross-cultural communication.
Stats
I love numbers. Don't you?
130+
LeetCode solved
1,000+
Github commits since 2024
30+
IT related courses
Certificates
Well... had to put them somewhere.
Google Data Analytics - Coursera
Oct 25, 2024
~ 6 months / 150 h+
Google Data Analytics - Coursera
Oct 25, 2024
~ 6 months / 150 h+
Meta Back-End Developer - Coursera
Aug 18, 2023
~ 7 months / 240 h+
Meta Back-End Developer - Coursera
Aug 18, 2023
~ 7 months / 240 h+
Learning How to Learn - Coursera
Jul 23, 2024
Wish someone had taught me years ago how to use my brain properly. This course did it in less than two weeks.
Learning How to Learn - Coursera
Jul 23, 2024
Wish someone had taught me years ago how to use my brain properly. This course did it in less than two weeks.
Smaller Certs, Still Mighty
Not everything has a certificate - some lessons live in books.
Projects That Shaped Me
Both Commercial and Personal
Loop
Complete full-stack e-commerce solution built from scratch, featuring product listings, user reviews, shopping system, favourites, recently viewed items, and a powerful admin dashboard.
Demo site here (currently in Polish language)
https://my-shop-one-vert.vercel.app
Annualty
Full-stack SaaS platform inspired by Booksy, designed to manage clients, appointments, and business operations for service providers.
Feel free to explore the app using this demo credentials: owner1@gmail.com / test1234
https://annualty.app
Messenger (Simplified)
A real-time chat application built to explore how Facebook Messenger works under the hood. This project helped me understand WebSocket communication, message synchronization, and user presence in modern chat systems.
Learning project focused on mastering WebSockets and building a Messenger-like real-time experience from scratch.
https://github.com/marcelmilosz/React-LiveChat-Firebase
Frnd (Tinder Clone)
A dating app experiment built to understand how Tinder-like platforms handle swiping logic, real-time matches, and user interaction flows. No roses, just algorithms.
Created as a fun technical deep dive into matchmaking mechanics and user-based recommendation systems.
My Blog
A simple full-stack blog built to deepen my understanding of content-driven applications, Markdown parsing, and modern web publishing platforms. Focused on clean structure, SEO, and performance.
Created as a learning project to explore blog architecture and Markdown rendering.
https://my-blog-seven-gamma.vercel.app/
Color Picker (Course)
A sleek color-picking tool developed during a React course to grasp component structure, state management, and local storage handling. Practical, reusable, and a solid intro to design systems.
Built while learning React fundamentals — turns out choosing colors is harder than writing the code.
https://github.com/marcelmilosz/React-ColorPicker
Weather App
A minimal weather-tracking application built to explore external APIs and real-time data fetching. Developed as a lightweight personal tool for checking forecasts and practicing clean API consumption.
Originally built to teach myself how to work with real-world weather APIs — and maybe decide whether to bring an umbrella.
https://github.com/marcelmilosz/React-WeatherApp
Massage Therapist Website
A fully responsive, modern landing page designed for a massage therapist client. Built to showcase services, establish online presence, and provide essential contact and location details.
Individually crafted project for a client in the wellness industry.
https://oskar-kubiak-marcelmiloszs-projects.vercel.app/
Yahoo Charts Scraper
A Python-powered tool that scrapes financial data from Yahoo Finance, logs it into Excel sheets, and visualizes key trends using interactive charts.
Created out of curiosity for how finance apps fetch and present real-time stock data.
https://github.com/marcelmilosz/YahooChartsScraper
Pac-Man (Vanilla JS Edition)
Built as a break from frameworks, this pure JavaScript rendition of Pac-Man was my way of saying 'I still remember how the DOM works'. No React, no build tools — just ghosts, dots, and good old-fashioned fun.
Go ahead and play — I'll wait.
https://pac-man-psi.vercel.app/
These are just a few of the many projects I've built — both commercial and personal. Some were developed for real clients, others were born out of curiosity or completed as part of deep-dive courses on platforms like Udemy or Coursera. Many more sit quietly in my GitHub, waiting for their moment to shine.
You can find more projects on my github: https://github.com/marcelmilosz?tab=repositories
You can find more projects on my github: https://github.com/marcelmilosz?tab=repositories
My Skillset
Languages, Tools & Technologies
Web / Front-end
Advanced
Next
Advanced
React
Advanced
JavaScript
Intermediate
TypeScript
Advanced
Tailwind
HTML
CSS
SASS
Bootstrap
Bulma
Familiar
Jest
UI/UX & Graphics
Intermediate
Figma
Intermediate
Canva
Intermediate
Adobe Photoshop
Intermediate
Adobe Illustrator
Familiar
Adobe Xd
Web / Back-end
Advanced
Django
Flask (Python)
Php
Google Cloud
Firebase
Intermediate
Heroku
Node.js
Postman
Intermediate
MySQL
Intermediate
PostgreSQL
Intermediate
Mongo
AWS
Learning
Docker
Data Science / Statistics
Advanced
Python
Intermediate
Numpy
Intermediate
Pandas
Intermediate
R
Intermediate
Excel
Scikit learn
Intermediate
Selenium
Jupyter
Bare Metal & Beyond
Familiar
C++
Learning
C
Learning
Assembly Language (Nasm)
Arduino
Each skill listed here is either one I excel at, have used in commercial projects, or explored through personal projects—always with at least a solid grasp of the fundamentals.
Hobbies
Things that keep me sharp & inspired
💪
Calisthenics since 2018
📚
Reading Books
🎮
Gaming
🍎
Healthy Lifestyle
🏃♂️
Running
🎹
Playing Piano
🧠
Math & Physics