JavaScript Conference 2025 (Warsaw & Online)
Learn from the BestMeet Sylwia Laskowska
Rewrite or refactor? How to safely move legacy apps to modern frameworks.
Sooner or later, every team faces the same question: how do we migrate from legacy code to a modern framework? Should we take the “big bang” approach and rewrite everything from scratch, or should we migrate progressively, piece by piece? In this talk, I’ll share real-world stories from large-scale frontend migrations and highlight the trade-offs of both strategies. We’ll explore the risks of freezing development for months, the complexity of running two worlds in parallel, and the decision-making criteria that help teams pick the right path.
Sylwia Laskowska - Senior JavaScript Developer, Atos | Poland
Learn from the Best Featured Speakers
Tomasz Ducin
Independent Consultant, Architect, Developer & Trainer, Poland
Dr. Philippe De Ryck
Security Expert, Founder, GDE, Pragmatic Web Security | Belgium
Sylwia Laskowska
Senior JavaScript Developer, Atos | Poland
Eugene Fidelin
Engineering Manager & Frontend SME, eBay | Netherlands
Julien Huang
Nuxt Core Team, Leetchi | France
Jemima Abu
Front End Developer, GDE, Microsoft MVP , CAIS | UK
Nir Kaufman
Tech Lead, Full-stack AI Engineer, GDE, Tikal | Israel
Daria Poliakova
Front-end developer, Conscensia | Poland
Matthew Podwysocki
Staff Engineer, Mapbox | USA
Damian Płaza
Senior Software Engineer / Power Grid Gdańsk R&D Manager, Volue/Bottega IT Minds | Poland
Soumaya Erradi
Senior Software Developer, Atlantis S.R.L. | Italy
Ihor Maistrenko
Angular / .NET Developer / Team Lead, Conscensia | Poland
Manfred Steyer
GDE for Angular, softwarearchitekt.at | Austria
Jakub Andrzejewski
Senior Fullstack Developer & Advocate, GDE, Monterail | Poland
Markus Ingvarsson
Back End Developer, Podme | Sweden
Michał Jawulski
Managing Delivery Architect, Capgemini | Poland
Frizzarin Nicolas
Senior Staff Engineer, GDE, SFEIR | Luxembourg
Önder Ceylan
Principal Engineer, Google Developers Expert, Jumbo Supermarkten | Netherlands
Alain Chautard
GDE, Expert Web Consultant, Trainer, Mentor, Angular Training | France
Michael Egger-Zikes
Trainer & Consultant, AngularArchitects.io | Austria
Alex Okrushko
Senior Software Engineer, Snowflake | Canada
Alexander Thalhammer
Passionate Angular Developer, Angular Architects | Austria
Younes Jaaidi
Software Development Cook, Teacher & Coach, GDE | France
Daniel Sogl
Software-Architekt, Thinktecture AG | Germany
Rainer Hahnekamp
Trainer and Consultant, AngularArchitects.io | Austria
Dariusz Kalbarczyk
Google Developer Expert, Author, Podcaster, NG/JS/AI POLAND | Poland
Exciting updates are on the way! We'll be announcing our first speakers for 2025 soon. Stay tuned! Want to be part of our lineup? Click the button below to apply!
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