Polish JUG meeting: Fast Track to Domain Knowledge and Scripting on the JVM

We invite you to the next Polish JUG meeting on Thursday, April 16, 2026, at 6:00 PM at the DataArt office (ul. Jana Dekerta 24, 1st floor, LoftMill space).

This time, we are excited to host two speakers:
Igor Yamshanov will present: "Fast Track to Domain Knowledge: How to Get Necessary Context" (EN).
Haoyi Li will talk about: "Scripting on the JVM with Java, Scala, and Kotlin" (EN).

This event is kindly sponsored by DataArt. Thank you for your support!

DataArt is a global software engineering firm that delivers breakthrough data, analytics, and AI platforms for the world’s most demanding organizations. People and relationships are at the heart of our business, with our team's talent and expertise being our greatest assets. DataArt is committed to the People-first principle, fostering flexibility and continuous growth for all colleagues. We combine engineering excellence with human values and responsibility—toward our team members, the communities we serve, and the planet.

As always, snacks, drinks, and prizes will be provided ;-)
See you there!

Fast Track to Domain Knowledge: How to Get Necessary Context. It can be relevant for developers as they should understand domain of the solution, they are working on. In general it is role agnostic.
Joining a project in a new industry shouldn’t mean weeks of guesswork and rework. This event shares a practical, repeatable way to get the right domain context fast – so you can make better decisions, ask sharper questions, and catch risky assumptions early. We’ll cover how to identify the key concepts and workflows, validate your understanding with SMEs and stakeholders, and turn what you learn into a lightweight knowledge base your team can reuse. Walk away with a clear playbook for turning domain complexity into confident execution.

Igor Yamshanov
PhD, Head of BA @ Media & Entertainment Practice, DataArt.
CBAP, CPOA, ICP-APM, ICP-APO
Business Analyst and Product Owner with 18+ years of experience across outsourcing and product companies. Leads business analysis capability building and grows Media & Entertainment domain expertise, helping teams translate complex domain knowledge into clear decisions and actionable delivery. Mentor and coach.

Scripting on the JVM with Java, Scala, and Kotlin
This talk will explore use of JVM languages as scripting languages, replacing the Bash and Python scripts common throughout the industry. We will walk through live-coded demonstrations of how the JVM's benefits of performance, compile-time safety, and vast library ecosystem are advantages over traditional script platforms, but also how language verbosity, build tool overhead, and lack of convenient libraries hampers the efforts. Lastly we will demonstrate how script-focused tooling is able to smooth over some of those issues, simplifying build configuration and providing suitable libraries to make the JVM truly a world-class scripting environment as robust as any scripting language out there.

Haoyi Li graduated from MIT with a degree in Computer Science and Engineering, since then has built core infrastructure for high-growth companies like Dropbox and Databricks, and has been a major contributor to the open source community. His projects have over 10,000 stars on Github, and are downloaded over 20,000,000 times a month. Haoyi has deep experience in the JVM and has professionally built distributed backend systems, programming languages, high-performance web applications, and much more.