“I cannot teach anybody anything. I can only make them think”
Socrates

I like presenting at conferences and doing workshops. Sharing what I know makes me happy. My expertise is in the field of web development, and I'll be more than happy to meet your team or speak at your event.

Let's talk! Drop me a line at me@krasimir.dev

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My expertise

• ✭ 20+ years of experience
• ✭ Master and bachelor degree in CS
• ✭ Author of 5 books, 50+ articles, 500+ blog posts
• ✭ 78 presentations in 11 countries
• ✭ 21,000 stars on GitHub
• ✭ 13,000+ reputation on StackOverflow

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Workshops

• ‣ React in patterns This workshop is for intermediate React developers. We will talk about design patterns, data flow, state management. The workshop is suitable for teams that want to level up their React skills. Book the workshop
• ‣ 50 Tips on JavaScript We will learn about destructing, iterables, generators, helpful browser APIs. The workshop covers concepts like higher-order functions, memoization, currying, and state machines. We will talk about the fundamentals of Flux and Redux and see how patterns like singleton and publisher/subscriber work. Book the workshop

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Presentations

• § 2025
  (workshop) Exploring Server Side Rendering React Advanced London · 4/Dec/2025 · London, UK
• Vanilla Server Components React Advanced London · 1/Dec/2025 · London, UK
• I ❤️ JavaScript. It’s Not a Bug, It’s a Feature. JSTalks · 29/Nov/2025 · Bulgaria, Sofia
• Using React Without Using React DEV: Challenge Accepted · 28/Sep/2025 · Bulgaria, Sofia
• Using React Without Using React ReactSummit · 14/Jun/2025 · Netherlands, Amsterdam · video · slides
• (workshop) React in patterns ReactSummit · 13/Jun/2025 · Netherlands, Amsterdam
• (workshop) React in patterns WebExpo · 30/May/2025 · Czechia, Prague
• 20+ years on the web development rollercoaster WebExpo · 28/May/2025 · Czechia, Prague · video · slides
• The state of React.js TarnovoConf · 12/Apr/2025 · Veliko Tarnovo, Bulgaria · slides
• § 2024
  (workshop) Building scalable front-end architecture DevCon · 7/Nov/2024 · Bucharest, Romania
• 20+ years on the web development rollercoaster DevCon · 6/Nov/2024 · Bucharest, Romania
• You call yourself a webmaster? Shame on you! VarnaConf 2024 · 17/Aug/2024 · Varna, Bulgaria · slides
• FMI Club: Career development in the world of JavaScript DEV.BG FMI Club · 18/Jun/2024 · Online · slides
• The Art of Interviewing People or How to Identify Senior Talent C3DevFest & TechLeadConf · 14/Jun/2024 · Online · video · slides
• So, I’m a senior developer, and… WebExpo · 30/May/2024 · Czechia, Prague · video · slides
• TildeSlash podcast - Building Vanilla apps Episode 43 · 15/Mar/2024 · Online · video
• Using React without using React DEV.BG JavaScript user group · 24/Jan/2024 · Online
• § 2023
  I'm a senior JSTalks · 18/Nov/2023 · Bulgaria, Sofia
• JavaScript: the good, the bad and the one that works DevCon · 2/Nov/2023 · Bucharest, Romania
• To London and back CodeWeek Targovishte · 7/Oct/2023 · Targovishte, Bulgaria
• GCP (Google Cloud Platform) for web masters RuseConf 2023 · 9/Sep/2023 · Ruse, Bulgaria · slides
• JavaScript: the good, the bad and the one that works VarnaConf 2023 · 19/Aug/2023 · Varna, Bulgaria · video · slides
• DEV.BG podcast - why JavaScript dominates the world DEV.BG Jobs Board Talk · 11/Aug/2023 · Online · video
• To London and back Network event at Work del Mar Premium Coworking · 18/May/2023 · Varna, Bulgaria
• To London and back Tech Savvy Talks Live in Varna · 27/Apr/2023 · Varna, Bulgaria
• No magic, just Vanilla JS: The sweet taste of simplicity DEV.BG JavaScript user group · 22/Mar/2023 · Online
• Introduction to front-end development Digital Targovishte · 28/Jan/2023 · Targovishte, Bulgaria
• § 2022
  What it means to be a FE dev CodeWeek Targovishte 2022 · 22/Oct/2022 · Targovishte, Bulgaria
• TildeSlash podcast - React Episode 4 · 17/Aug/2022 · Online
• What it means to be a FE dev VarnaConf 2022 · 6/Aug/2022 · Varna, Bulgaria · video
• 50 shades of JavaScript DEV.BG JavaScript user group · 16/Feb/2022 · Online
• § 2021
  Working with components in React Telerik Academy · 9/Nov/2021 · Online
• Discussion IT Plovdiv Facebook group · 4/Mar/2021 · Online · video
• How to become a successful software engineer | Academy of Automation Podcast Waleed Deeba's YouTube channel · 25/Feb/2021 · Online · video
• § 2020
  Do you speak JavaScript? DEV.BG JavaScript user group · 26/Nov/2020 · Online · slides
• We are all Hemingway JSTalks 2020 · 20/Nov/2020 · Online · slides
• How to become a professional wheel re-inventor OpenFest · 8/Nov/2020 · Online · video · slides
• We are all Hemingway React Summit · 15/Oct/2020 · Online · video · slides
• React in patterns React.js global summit · 15/Sep/2020 · Online · slides
• How to become a professional wheel re-inventor SofiaJS · 27/May/2020 · Online/Webinar · slides
• TypeScript VarnaLab · 26/Feb/2020 · Varna, Bulgaria
• § 2019
  Reactive programming in a nutshell JSTalks 2019 · 23/Nov/2019 · Sofia, Bulgaria
• Reactive programming in a nutshell VarnaLab · 13/Nov/2019 · Varna, Bulgaria
• React in patterns SoftUni · 24/Sep/2019 · Sofia, Bulgaria · video
• NADCAST panel ReactNotAConf · 11/May/2019 · Sofia, Bulgaria · video
• Asynchronous JavaScript VarnaJS meetup · 17/Apr/2019 · Varna, Bulgaria
• React fundamentals VarnaJS meetup · 27/Feb/2019 · Varna, Bulgaria
• § 2018
  React is a lie VarnaJS meetup · 5/Dec/2018 · Varna, Bulgaria
• React is a lie partial::Conf · 30/Nov/2018 · Sofia, Bulgaria
• React in 20 mins SoftUnit · 28/Sep/2018 · Sofia, Bulgaria
• Building scalable web apps for patients VarnaConf 2018 · 4/Aug/2018 · Varna, Bulgaria · video · slides
• React, Redux and SSR VarnaJS meetup · 12/Jul/2018 · Varna, Bulgaria
• NADCAST live ReactNotAConf · 28/Apr/2018 · Sofia, Bulgaria
• Building scalable web apps for patients BulgariaWebSummit · 14/Apr/2018 · Sofia, Bulgaria
• § 2017
  The Rise of the State Machines DevReach · 13/Nov/2017 · Sofia, Bulgaria · video · slides
• Talk on talks VarnaConf 2017 · 26/Aug/2017 · Varna, Bulgaria · video · slides
• React in patterns BulgariaWebSummit · 8/Apr/2017 · Sofia, Bulgaria · video · slides
• § 2016
  React - the good, the bad and the ugly BulgariaWebSummit · 20/Feb/2016 · Sofia, Bulgaria · slides
• § 2015
  My 3 years daughter is a better programmer then me OpenFest · 7/Nov/2015 · Sofia, Bulgaria · slides
• Crafting client-side testing FOWA London · 6/Oct/2015 · London, UK
• Two books later VarnaConf 2015 · 15/Aug/2015 · Varna, Bulgaria · video
• Crafting client-side testing JSCamp · 2/Jun/2015 · Bucharest, Romania
• 7 Rules to Get the Things Done I T.A.K.E. Unconference · 28/May/2015 · Bucharest, Romania · video
• All about client-side testing Bulgaria Web Summit · 18/Apr/2015 · Sofia, Bulgaria · video · slides
• AbsurdJS - hacking the front-end CodeMotion · 28/Mar/2015 · Rome, Italy
• Using Node.js for everything Riga Dev Day · 22/Jan/2015 · Riga, Latvia
• § 2014
  About programming OpenFest · 2/Nov/2014 · Sofia, Bulgaria · video · slides
• Front-end - two sides of the same coin How.Camp · 25/Oct/2014 · Veliko Tarnovo, Bulgaria · slides
• AbsurdJS - Hacking the Front-end WeNode · 4/Oct/2014 · Barcelona, Spain · slides
• Panel discussion JSIST · 28/Sep/2014 · Istanbul, Turkey
• The happy programmer JavaScript Meetup · 26/Sep/2014 · Istanbul, Turkey
• The seven rules of the happy programmer JavaScript Meetup · 9/Sep/2014 · Switzerland, Zurich
• Tracking UI interactions with CSS (lightning talk) VarnaConf 2014 · 12/Jul/2014 · Varna, Bulgaria · video · slides
• AbsurdJS - Hacking the Front-end Bulgaria Web Summit · 31/May/2014 · Sofia, Bulgaria · slides
• AbsurdJS - Hacking the Front-end Codefront · 10/May/2014 · Linz, Austria · slides
• § 2013
  CSS for developers TarnovoConf · 5/Oct/2013 · Veliko Tarnovo, Bulgaria · video · slides
• Desinging in/for web VarnaConf 2013 · 20/Jul/2013 · Varna, Bulgaria · video · slides
• § 2012
  Talks at VarnaLab Varna's Hackerspace · 1/May/2012 · Varna, Bulgaria · video