01
Quality
We cannot be best at everything, so we choose carefully: C# / .NET web applications for finance, and high-end hardware from trusted brands for buildings.
Who we are
In business since 2019.Our people, far longer.
Polish Developer Network (PDN) is an independent engineering company based in Tarnów, Poland. We build C# and .NET software, mostly for banking and finance, and in 2026 we opened two more practices: UniFi networks and KNX building automation for offices, hotels and homes.
In software, we typically work under long-running contracts, where correctness, auditability and the client’s control over its data come first. For UniFi and KNX, the same standard means hardware from trusted brands, controllers inside the building, data kept on site and cloud features only on request.
People in our team designed and configured KNX installations in smart homes before they moved into software. Now they are bringing that experience back to building automation, together with more than a decade of writing and testing code.
Timeline
Where our team’s experience comes from
Earlier careers
2007
Exlab Smart homes
Members of our team designed and configured smart-home systems on KNX and other platforms.
2012
ALM Software
The same people turned to software: automated testing first, then application development.
At PDN since 2019
2019
PDN is founded
A limited company based in Tarnów. We build software, mostly for banking and finance, inside our clients’ own environments.
2026
UniFi and KNX
We expanded into networks and building automation, putting our team’s smart-home experience back to work.
7+
years since PDN was founded
14+
years of software experience in our team
5+
years of smart-home experience in our team
Values
Quality, security, privacy.
02
Security
Current cybersecurity practice, secure devices and networks only, and the highest standards for handling customer data.
03
Privacy
Local-first by default. Data stays on your infrastructure and inside your building. Cloud features only when you ask for them.
The team
Who you will work with
Separate specialists for each practice, so the people on your project do this work every day.
Software engineers
C# and .NET developers who build and maintain web applications and integrations.
Solution architect
Shapes the system, the integrations and the security model before code is written.
AI and automation engineer
Puts machine learning and LLM-based automation to work inside your processes.
Network engineer
Designs, provisions and monitors UniFi networks, cameras and door access.
KNX integrator
Plans, programs and commissions KNX installations.
Project lead
Your single point of contact for scope, schedule and communication.
Client confidentiality
You will not find client logos here.
NDANo client listNo project photos
All our work is delivered under NDA. Publishing project details, even sanitised photos, tells attackers where to look and widens the attack surface around our clients, and a public client list would make us a target too.
So we publish nothing about our customers. References and details are shared in a private meeting, once we have verified that a prospect is a real, legitimate business or customer.
Company detailsWant to meet the team?
A short call is the fastest way to find out whether we are the right fit.