# JustDev

> JustDev Artur Węgrzyn is a software engineering company based in Kielce, Poland, operating since 2020. It designs, builds and runs highly scalable backends in Java, Kotlin and Python, together with the cloud infrastructure they run on. Experience: large-scale European e-commerce (as a subcontractor to software companies) and the Polish public sector. Client names are not published because of NDAs.

The website is available in Polish (default) and English.

## Company facts

- Legal name: JustDev Artur Węgrzyn (sole proprietorship registered in Poland, CEIDG)
- NIP (tax ID): 9592036515
- REGON: 387205469
- EU VAT number: PL9592036515
- Address: ul. Stefana Okrzei 41b/16, 25-526 Kielce, Poland
- Email: arturwegrzyn96@gmail.com
- Phone: +48 601 698 230
- Founded: 2020
- Owner: Artur Węgrzyn (https://www.linkedin.com/in/artur-wegrzyn/), co-organiser of Kielce Java User Group (https://kjug.justdev.pl/)
- Working languages: English, Polish
- Works remotely with clients in Poland and across Europe

## Services

- **Scalable backend development**: Services and APIs in Java, Kotlin and Python, designed for high traffic, high availability and long-term development. We choose the architecture to fit your scale and your team — not the latest trend.
- **Cloud infrastructure**: We design and build the environments these systems run on, and look after them once they are live. Infrastructure defined as code — repeatable and predictable.
- **Frontend and supporting tools**: Web interfaces, admin panels and internal tools that complete the backend and make your teams’ day-to-day work faster.
- **IT consulting and security**: We help you make technical decisions and reduce risk: architecture and code reviews, scaling plans, and security for applications and infrastructure.

## Experience

- **Large-scale e-commerce**: We work on systems for some of Europe’s largest e-commerce platforms, as a subcontractor to the software companies that serve them. Our work is done in international, English-speaking teams, on solutions that handle very high traffic and must stay highly available.
- **Public sector**: We deliver projects for public authorities and institutions in Poland — systems that help digitise services for citizens, where reliability, security and compliance matter.

## FAQ

### What does JustDev do?

We design, build and run highly scalable backends in Java, Kotlin and Python, together with the cloud infrastructure they run on. We also build frontends and supporting tools, and provide IT consulting and security services.

### Where are you based, and do you work with international clients?

The company is based in Kielce, Poland, and has been operating since 2020. We work remotely with clients in Poland and abroad, in English and Polish. On projects for European e-commerce platforms we work in international teams.

### Which industries do you have experience in?

Mainly large-scale e-commerce — as a subcontractor to software companies, we work on systems for some of Europe’s largest e-commerce platforms — and the public sector, on projects for authorities and institutions in Poland.

### Why don’t you publish client names?

Our projects are covered by non-disclosure agreements. We are glad to discuss our experience in a direct conversation, as far as those agreements allow.

### Can you join an existing team?

Yes. We can own the whole backend and infrastructure area, or join your team and work within your processes.

### How do we start working together?

Email arturwegrzyn96@gmail.com or call +48 601 698 230. Tell us briefly about the system, the scale and the timeline, and we will get back to you to set up a call.

## Pages

- [Home (English)](https://justdev.pl/en/): JustDev, Kielce, Poland: we design, build and run highly scalable backends in Java, Kotlin and Python, plus the cloud infrastructure behind them.
- [Strona główna (Polski)](https://justdev.pl/): JustDev z Kielc projektuje, buduje i utrzymuje wysoko skalowalne backendy (Java, Kotlin, Python) oraz infrastrukturę chmurową. E-commerce i sektor publiczny.
- [Blog (English)](https://justdev.pl/en/blog/)
- [Blog (Polski)](https://justdev.pl/blog/)
- [JustDev in 2026: what we do and where we are heading](https://justdev.pl/en/blog/justdev-in-2026/) (English): We have launched a new bilingual website. A short overview of what we do, who we work with and what comes next.
- [JustDev w 2026 roku: czym się zajmujemy i dokąd zmierzamy](https://justdev.pl/blog/justdev-w-2026/) (Polski): Uruchamiamy nową, dwujęzyczną stronę. Krótko o tym, co robimy, dla kogo pracujemy i jakie mamy plany na najbliższy czas.

## Profiles

- LinkedIn: https://www.linkedin.com/in/artur-wegrzyn/
- GitHub: https://github.com/Stiuil06
- Kielce Java User Group: https://kjug.justdev.pl/