Krasimir TsonevKT
Looking for a job

Krasimir Tsonev


Nearly 20 years of experience, master degree in CS, author of 5 books on programming


What I'm looking for

A company with challenging projects that works on a big scale. I like to take ownership of stuff, learn, and teach.

I am a senior software developer with nearly years of experience in web development. My current career goal is to collaborate in building complex web applications. With a solid technical background, I like to switch between Back-End and Front-End. I am passionate about open-source projects, public speaking, and actively participating in the development community. I have written five books on programming specializing in the JavaScript ecosystem.

My technical skills encompass a wide range of technologies due to the rapidly evolving nature of the web. Throughout my career, I have worked with various tools and frameworks. I have experience with Flash and ActionScript 2/3, LAMP projects, jQuery, Backbone, ExtJS, and MooTools. I have experimented with Angular, Ember, and Knockout, but my preferred framework is React and its ecosystem.

Last years, I focused on building everything with JavaScript/TypeScript. I am comfortable working on both the back-end and front-end. Over the years, I have worked on diverse projects, gaining intermediate knowledge in Unix and server administration. I have configured Apache and nginx and worked with SQL and NoSQL databases. Recently, I have been using Docker and Kubernetes within Google's cloud platform. I am proficient in using Git and various command-line instruments to automate workflows.

My career started as a graphic designer using tools like Photoshop and CorelDRAW. I gradually transitioned to "web design" and shifted towards programming roles.


Freelance logoFR

Book author

Nov 2013 - Present (10 years 7 months)

"50 Tips on JavaScript"

"React in patterns"

"Node.js by example"

"Node.js Blueprints"

Freelance logoFR

Public speaker and mentor

Jul 2013 - Present (10 years 11 months)

62 presentations in 10 countries

List of all my presentations:

East logoEA

Web developer


Jun 2011 - Sep 2014 (3 years 3 months)

Implementing web sites and applications using HTML/CSS/JavaScript and Flash. On the back-end side using the LAMP stack.


Fullstack developer


Apr 2008 - Feb 2009 (10 months)

Implementing designs of sites and application using HTML/CSS/JavaScript/Flash. Using the LAMP stack on the BE.


Graphic and web designer, php/mysql developer

May 2004 - Jul 2006 (2 years 2 months)

I was designing web sites, slicing them to HTML and CSS and implementing them in the LAMP stack.

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