GreeceJS #26: Probabilistic data structures & Management learnings

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Welcome to GreeceJS season[masked]. We are now on year 7 :-)

A special announcement is due: GreeceJS is officially a legal association! This opens up new opportunities for sponsoring and simplifies day-to-day operations. Most importantly, it makes GreeceJS a truly open community. Our members vote for the board. The board changes every two years. Find out more at

Meetup #26 features two awesome talks: The eminent Zaharenia Atzitzikaki will iterate on mistakes she made as a manager and lessons learned midway. Aggelos Karalias, one of the best engineers of our community, will introduce us to the magical world of probabilistic data structures.

Join us on Tuesday, Oct 16, 2018 at InnovAthens powered by Samsung - Hub of Innovation & Entrepreneurship of Technopolis City of Athens.

18:00 - 18:15
Networking & beverages

18:20 - 18:25
Opening talk (gr)

18:25 - 18:45
JS Knowledge Quiz (gr)
Test your JavaScript skills for fame and glory. All you need is your smartphone - just make sure to be at the venue on time!

18:45 - 19:30
Management Mistakes (gr)
- Zaharenia Atzitzikaki, VP Product Design at Workable

Zaharenia made her switch from individual contributor to people manager a few years back and the transition has been, well, rocky. Which are the pitfalls of making the switch? How is remote working affecting the way we manage? Learn from the mistakes of a reluctant manager.

19:50 - 20:00
A word from our sponsor: Toptal (en)

Toptal is a global network of top talent in business, design, and technology that enables companies to scale their teams, on demand. Toptal serves thousands of clients, including Fortune 500 companies such as Hewlett Packard Enterprise, Bridgestone, Pfizer, and Axel Springer, and has ongoing opportunities for developers with extraordinary skill in JavaScript.

Toptal's global community organizes and sponsors hundreds of events each year around the globe. Find out more at

20:00 - 20:45
Introduction to Probabilistic Data Structures (gr)
- Aggelos Karalias, Lead Software Engineer at Logicea

Is it possible to tell whether an element exists in a large set of items without looking at the items? Sometimes it's better to tame big data by simply ignoring them. Aggelos will introduce us to the magical world of probabilistic data structures, such as HyperLogLog and Bloom Filter.

BeerJS @The Lazy Bulldog Pub
Orfeos 2, Athens (right next to the venue)