Jan Elznic

Fullstack software engineer

Always listen to experts. The'll tell you
what can't be done and why. Then do it.
(Robert A. Heinlein)

About me

My name is Jan Elznic, I am 34 years old and I am doing software development for web and mobile platforms. My specialization is web frontend applications (HTML5, CSS3 and JavaScript). My first page I wrote in 1998. Ten years later (2008), I officially started my own business. I worked for several years as a freelancer, tried a full-time job for Czech and also some other European and American startups, medium-sized companies and big corporations. More about my professional career you can learn from my resumé (CV).

In recent years I'm also interested in web usability (User eXperience) and the development of native mobile applications for Android, iOS, Windows Phone and Firefox OS. I love games of all kinds, Linux and Open Source - a few of my contributions to the world of open source can be found on my GitHub.

My favourite activities at spare time: reading, time management, travel, cycling and skiing, theater, developer meetings.

Résumé (PDF doc)

Portfolio

…my skills including…

Web frontend
- HTML(5), CSS(3), JavaScript (ECMAScript6)
- Frameworks (jQuery, Angular, React, …)
- Automation tools (LESS/SASS, Grunt/Gulp)
- Accessibility (WAI-ARIA standards)
- New recommendations (W3C, WHATWG)
Backend apps development
- PHP (+ frameworks nette, Yii, …)
- Python, Node.js, C/C++
- Databases (MySQL/MariaDB/PostgreSQL, MongoDB, Neo4j, …)
- Security (XSS, CSRF, SQL injection)
Server administration
- Linux servers administration (Debian/Ubuntu)
- Networks, TCP/IP, DNS, loadbalancing
- Webservers - Apache2, Nginx
- VPN - OpenVPN, PPP(TP)
- shell - Bash scripts
Graphics
- Drawing wireframes and prototyping
- Creating graphic design (Adobe PS)
- Analysis of usability and user testing
- Web banners in Adobe Flash, ActionScript
- Design of print, corporate identity
Analytics, SEO and marketing
- Google Analytics & Webmasters Tools
- Search Engine Optimization (SEO)
- PPC campaigns management (AdWords, Sklik)
- CRM, sales, B2B a B2C marketing
- PR, medial plans & social networks
Mobile apps and games
- Multiplatform HTML5/JavaScript apps and games development
- Canvas, Websockets, WebGL
- Cocos2d-JS, Apache Cordova, Adobe Flash, IONIC
- Google Android, Apple iOS, web

References

Some clients from recent years:

Some projects:

Cemex track & trace web app
- Client: CEMEX / Neoris s.r.o.
- Scope: Frontend, Responsive template
- Technologies: React, Angular 2
- Realization: spring 2017
Application is not public
Multiplatform HTML5 casino games
- Client: Trusteca s.r.o.
- Scope: Android, iOS, web
- Technologies: Canvas/WebGL, JavaScript
- Realization: winter 2016
Application is not public
O2 portal
- Client: O2 Czech Republic a.s.
- Scope: Frontend, Responsive template
- Technologies: Java, Liferay, HTML5, CSS3, JS
- Realization: spring 2016
https://o2.cz
Web sluzba.getmore.cz
- Client: Getmore s.r.o.
- Scope: Frontend, backend
- Technologies: PHP, HTML5, CSS3, JS
- Realization: autumn 2015
http://sluzba.getmore.cz
KKCG intranet
- Client: Etnetera a.s.
- Scope: Frontend, Responsive template
- Technologies: Java, Liferay, HTML5, CSS3, JS
- Realization: léto 2015
Application is not public
Slovak Telekom
- Client: Slovak Telekom, a.s.
- Scope: Frontend, Responsive template
- Technologies: Java, Liferay, HTML5, CSS3, JS
- Realization: spring 2015
https://telekom.sk
New web for EMTC - Czech
- Client: EMTC - Czech, a.s.
- Scope: Backend, Responsive template
- Technologies: PHP5, HTML5, CSS3
- Realization: winter 2014
- Estimation: about 120 hours
http://www.emtc.cz
EMTC Career web
- Client: EMTC - Czech, a.s.
- Scope: Backend, Responsive template
- Technologies: PHP5, HTML5, CSS3
- Realization: autumn 2014
- Estimation: about 64 hours
http://kariera.emtc.cz
New responsive web Lipa Learning
- Client: Lipa Learning s.r.o.
- Scope: Responsive frontend, management
- Technologies: HTML5, CSS3, Python
- Realization: summer-autumn 2014
http://www.lipalearning.com
HTML5 Lipa Bear game
- Client: Lipa Learning, s.r.o.
- Scope: Porting for web browsers
- Technologies: HTML5, CSS3, JS
- Realization: summer 2014
- Estimation: about 100 hours
Demo is not publicly available
Responsive web Lipa Learning
- Client: Lipa Learning s.r.o.
- Scope: Responsive template (mobile, tablet)
- Technologies: HTML5, CSS3, nette/latte
- Realization: spring 2014
- Estimation: about 40 hours
http://www.lipalearning.com
Plánování financí.cz (Finance)
- Client: Stanislav Soukup
- Scope: graphics, CMS, template, webhosting
- Technologies: PHP5, MySQL, HTML5, CSS3
- Realization: spring 2013
- Estimation: about 100 hours
http://www.planovanifinanci.cz
Seznam skokanů by Seznam.cz
- Client: Seznam.cz, a.s.
- Scope: Backend, Frontend
- Technologies: PHP, HTML, CSS, JS
- Realization: 2011
- Estimation: about 40 hours
http://skokani.seznam.cz
CMS Easy Admin System 3
- Client: my own project
- Scope: graphics, backend, frontend
- Technologies: PHP, MySQL, HTML, CSS, JS
- Realization: 2012
- Estimation: 3 months
demo not available
E-learning dictionary app
- Client: Seznam.cz, a.s.
- Scope: Frontend
- Technologies: HTML, CSS, JS
- Realization: 2011
http://slovnik.seznam.cz/learn