eSolutio
software engineering studio

I build software
for backend and mobile.

eSolutio — Rafał Kruk. Design and development of server-side systems and native mobile apps. From architecture to deployment.

01 — about

One engineer, production quality

eSolutio is a software studio run by Rafał Kruk. I develop custom software: full backend systems in Java, services and automation in Python, and native apps for Android and iOS.

I work directly with clients — no layers in between. You get an engineer who understands both the system architecture and the details of shipping it.

02 — capabilities

Four areas, one workshop

~/esolutio/stack
Java backend
Full backend stack — APIs, services, integrations, databases and business logic ready for production.
JavaSpringRESTSQL
Python
Services, automation, data processing and tooling that supports systems and workflows.
PythonAPIAutomation
Android
Native Android apps — from concept to store release.
AndroidKotlinJava
iOS
Native apps for iPhone and iPad, tuned for the Apple ecosystem.
iOSSwift
03 — contact

Let's talk about your project

Briefly describe what you want to build — I'll get back to you with a proposed scope and quote.