ADUNET s.r.o. · Independent IT professional

Professional IT, by Andrej Duda

It’s never too late — or too expensive — to re-think and re-design your IT. From architecture and development to DevOps, cloud and AI, I turn complex problems into reliable software your business can grow on.

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Architecture Java · Spring Angular Node.js Docker · K8s Cloud Blockchain AI
Andrej Duda, IT professional
Available for projects Košice, Slovakia
What I do

Services & expertise

A full-stack, end-to-end skill set — one senior professional covering analysis, architecture, development and operations.

Software Architecture & Development

End-to-end design and development of custom applications, APIs and platforms — from the first sketch to a production system you can rely on.

DevOps, CI/CD & Cloud

Automated pipelines, containers and cloud infrastructure that let you ship faster, deploy safely and stay reliable under load.

IT Consulting & Solution Design

Independent analysis, architecture and technology strategy — so you make the right call before a single line of code is written.

Legacy Modernization

Re-thinking and re-designing outdated systems into maintainable, scalable solutions — evolving your stack without the rewrite chaos.

AI-Powered Development

I build real products faster by putting modern AI to work across the whole development lifecycle — from design to delivery.

In R&D

AI for Healthcare — ECG

An emerging focus: training deep-learning models for ECG signal analysis, bringing modern AI to medical diagnostics.

Why a professional

One professional is worth more — and more cost-effective — than ten people without the skills.

A wider range of real-world experience across many projects and domains.

Deeper knowledge of how and why things actually work.

Time-saving tooling and practices that keep delivery genuinely efficient.

The ability to argue concisely and factually, not by opinion.

Thinking out of the box to find solutions others miss.

A mindset built to achieve real product quality, not just “done”.

Clear judgement between what’s important and what’s merely urgent.

Effective use of CI/CD — continuous integration and delivery.

One person covering analysis, architecture, development and DevOps.

Able to lead and teach, and set the rules that drive desired quality.

Featured work

Lead engineering behind ProtonChains

Where most of my day-to-day work happens — fintech & blockchain product development.

Lead developer · Subcontractor

I work mainly as the engineer behind ProtonChains, delivering professional architecture, design and product development for the fintech industry. I personally architected and built most of the solutions delivered there — from custom blockchain integrations and Solidity smart-contract development & audits to secure, scalable backend systems.

Java · Spring Microservices Solidity / EVM Bitcoin · Ethereum Smart-contract audits Docker · Cloud
13+
blockchains integrated
EVM
smart contracts & audits
End-to-end
architecture → delivery
Visit protonchains.com
About

A single point of accountability

Owner & engineer

Ing. Andrej Duda

A senior IT professional based in Košice, Slovakia. I run my work as a one-person studio through two companies — ADUNET s.r.o. and ADUCORE s.r.o. — which means one person owns analysis, architecture, development and operations, with no hand-off gaps and no finger-pointing.

How I work

Senior ownership, end to end

Pragmatic over trendy. Quality built in, not bolted on. Clear, factual communication and honest estimates. And when a problem needs it — the willingness to think well outside the box.

Contact

Let’s build something solid

Have a project, a legacy system to modernize, or an idea to pressure-test? Get in touch.

Company details
ADUNET s.r.o.
  • OwnerIng. Andrej Duda
  • AddressMagurská 8, 040 01 Košice, Slovakia
  • IČO51 733 111
  • DIČ2120765702
  • IČ DPHSK2120765702
ADUCORE s.r.o.

Sister company — same owner & management.

  • OwnerIng. Andrej Duda
  • AddressDolina 18/31, 040 15 Košice – mestská časť Poľov, Slovakia
  • IČO57 085 714
  • DIČ2122559505
  • IČ DPHSK2122559505
Start a conversation

Reach out directly

The fastest way to reach me is on LinkedIn — connect and tell me about your project, and I’ll get back to you.

Ing. Andrej Duda
Connect on LinkedIn