Throughout my 20+ years of IT career I have gained Primarily I'm focused at back-end development; however, my front-end skills are also strong. JavaScript , AJAX, HTML, CSS, PHP - both core and frameworks - JQuery, Bootstrap, React.js, Slim . DB engines - MySQL, Redis, Firebird. Linux administration (LAMP, LEMP), command-line (bash tool-set like awk, grep, jq etc). Serious emphasis on network protocols, good understanding of OSI and TCP/IP in the scope of web-development: DNS, HTTP, sockets, proxies. I'm familiar with architecture of many engines and CMS such as Drupal, WordPress and lot of pretty old like PhpBB and PhpNuke. Also I have extensive background in generic programming: C, Python, Lua, ASM for few architectures and