Embedded & Edge
ESP32 firmware, telemetry, low-latency communication, and resilient edge control.
R4_TECH
Developing AI, (I)IoT and business-supporting software — from idea to deployment and maintenace
About me
Who I am and what I do
I specialize in building reliable IoT systems and software. From ESP32 firmware, through Java and C# backends, to modern web interfaces — I deliver solutions from idea to production deployment.
Backend Systems
Java and C# services, APIs, event pipelines, and production observability.
Web Interfaces
Fast dashboards and operator UIs with Astro, React, and clean data flows.
Selected work
Featured projects
Some of my projects
R4 Biuro
Currency rates, exchange differences, tax interest calculator and more.
R4 Biuro for Android
Companion app for R4Biuro.pl. Browse and issue KSeF invoices, add expenses on the go, get notifications.
PC_Assistant
Ambient PC resource monitor and multimedia controls. ESP32 + TFT (C++, Python, LVGL).
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BRACH Ltd.
An accountancy firm’s website. Animations, login section, admin panel, three design variants, SSO resources and more...
ESP32 Gateway
Reliable aggregation of distributed nodes with live telemetry dashboards.
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Contact
Write me a mail, SMS or on What's App. You can also call, or write on Discord or Teams.
Have an idea for an application, website, IoT system, or integration between systems? I'll be happy to help! Send me a message or give me a call, and I'll answer your questions and suggest the best solution.