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szymon-s292/README.md

Hi, I'm Szymon 👋

And I enjoy building software that people actually use. 📚 Fascinated about tech and how everything around us works. 👨‍💻

Founder of Pro-Faktura 🚀

An advanced and extremely simple accounting software for managing invoices, income/expenses and generating tax declarations integrated with KSeF API and e-dokumenty API. Enabling users to send invoice in less than a minute while allowing them to focus on their business rather than tedious accounting stuff.

My other best projects

📖 maturazadania.pl - is a website with aggregated task from polish matura exam. Allowing students to practice what they need and keep track of their progress.

👾 ksef-client - a php library for interacting with Polish KSeF 2.0 API and XAdES authorization.

Solved 400+ tasks on Leetcode

Leetcode

Tech Stack

My Skills

Let’s get in touch

stajszczykszymon@gmail.com

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    ✅C++ ✅Java ✅SQL ✅Python

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  2. ksef-client ksef-client Public

    A PHP library for integrating with the Polish KSeF 2.0 (National e-Invoicing System). It provides authentication, invoice submission and retrieval, and seamless communication with the official KSeF…

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  3. Arch-linux-i3wm-setup Arch-linux-i3wm-setup Public

    Arch Linux with i3 window manager configuration for maximum productivity, sleek look and minimum distractions

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  4. jpk-client jpk-client Public

    A PHP library for integrating with the Polish e-dokumenty.mf.gov.pl API. It provides authentication via last year income declaration amount, all kinds off JPK files submission, and very easy usage …

    PHP