Case After Case


JavaMan Go

November 12, 2016

During the IT NonStop conference in Kharkov, we will discuss issues related to the migration of large projects to modern technology stacks, quality improvements, code efficiency and optimization, and building hardware computer systems.

For Visitors


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Boris Trofimov

Solution Architect at Sigma Software

Co-founder of Odessa JUG. Boris is a professional software engineer with 10+ years of experience in a wide range of expertise: from mobile and enterprise software to big data and high load distributed applications. He is passionate about scalable architectures.

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Juriy Litvinenko

VP of Engineering at Kreditech

Juriy has been engaged in software development since 2005. During this time, he has tried on many hats working at various companies and arrived at the conclusion that the Jack-of-all-trades role is the best for him. Most of all, Juriy is interested in people and work processes. Currently, he helps the engineering department of Kreditech ensuring employees’ happiness and maximum efficiency at work.

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Maksym Voroniy

Software Architect at GlobalLogic

Maksym is a Software Architect working in the world of distributed systems. His professional knowledge and skills were formed by participating in multiple projects with broad technology stacks based on Java, C#, C++, and Python. Maksym has a PhD in System Analysis and AI discipline. He dreams about a world where people wake up smarter than they were the day before.

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Sergey Morenets

Java Evangelist

Sergey is a developer and also a team lead. He has worked in the field of IT since 2000. Sergey has more than 15 years of business development experience, including 12 years of working with Java SE/EE. Also, he has experience working with relational databases as well as NoSQL. For more than 3 years, Sergey has been giving programming courses (Java Core + Java-technology); the main topics are: basics of Java, development tools, and Java technologies/frameworks. During this time, he has held more than 15 workshops. Also, Sergey has extensive practical experience in the field of web technologies: HTML, JavaScript, AJAX, CSS. He has knowledge of design and database programming (SQL, HQL), from MySQL to MSSQL/Oracle). Sergey is passionate about TDD testing and unit testing (JUnit, Mockito). Sergey actively participates in the Java conferences held in Ukraine and Belarus. He is the author of books such as “Development of Java Applications” and “Main Java Programming Errors”.

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Vyacheslav Lapin

Senior Software Engineer at EPAM Systems

Specialist in WEB, XML, and Java technologies. Vyacheslav participated in 14 successful projects: as developer (8 projects), project analyst (4), and architect (2). He has extensive experience in software development during all stages of the project lifecycle. Vyacheslav has worked on diverse business projects: from bank CRM systems to web portals, from integration systems in the telecommunication industry to enterprise automation systems.

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Alexander Pavlenko

Senior Java/BigData Software Engineer, DataArt.

Most of all I’m interested in Big data & IoT industry and related technologies. I have extensive experience in building open source and commercial software and am ready to share it, both the good and the bad.

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Tatyana Matvienko

Senior Java / BigData Software Engineer, DataArt

I’m Java developer, traveller and amateur photographer. Inspired by IoT industry Big Bang started working on DeviceHive - open-source Machine to Machine (M2M) Communication Framework. Thanks to this now I’m familiar with such powerful and popular frameworks as Spark Streaming, Elasticsearch, Apache Zeppelin and much more. Ready to share our team’s experience, successful and not really.


10:00 — 10:45

Registration. Coffee.


10:45 — 11:00



11:00 — 11:50

Sergey Morenets, Java Evangelist

“The efficiency and optimization of code in Java-based applications”

12:00 — 12:50

Vyacheslav Lapin, Senior Software Engineer, EPAM Systems 

“How I transferred a big legacy enterprise Java project to Java 8”

12:50 — 13:10

Coffee break

Coffee Break

13:10 — 14:00

Maxim Voronoy, Software Architect, GlobalLogic

“Reactive Spring 5 — silent revolution”

14:00 — 15:00



15:00 — 15:10

Prize draw with DataArt and the partners of the conference

15:10 — 16:00

Yuri Litvinenko, VP of Engineering, Kreditech

“Postmortems “Effective correction of errors”

16:10 — 17:00

Boris Trofimov, Solution Architect Sigma Software

“Colliding worlds or bending Spark towards enterprise needs”

17:00 – 17:15

Coffee break

Coffee Break

17:15 — 18:05

Tatiana Matvienko, Alexander Pavlenko, Senior Java Developer, DataArt

“Fuzzy Hamming & Edit distance search over 2TB of data by 200 Spark workers”

18:05 – 19:00

Closing ceremony




1 Blagoveschenskaya Street,

Registration is closed



For Presenters


Every report is viewed by the expert board of IT NonStop. This board includes senior specialists and project managers from DataArt. The experts are ready to provide support with the preparation of speeches and presentations.


  • Theme
  • Duration of report will be announced later
  • Short description of the report


  • Full name
  • Position held
  • Current place of employment
  • A brief text about yourself (300-400 characters)
  • Photo in .PNG format


  • Reimbursement for travel and accommodation
  • Lunch and coffee breaks
  • IT Nonstop conference souvenirs