Sergey S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Australian with Russian origin, started UNIX programmer/system administrator in Russian pioneer ISP company, 20+ years of free-lance - web-development, scripting, UNIX system admin, web-site configuration/migration/backups, software installation/tuning. Background in mathematics allows me to find unusual and effective approach to the problem. Doing my best to get the work done quickly Main area of expertise - all sort of UNIX work: scripting (PHP/Perl/bash), C programming, system administration (LAMP/Apache/Mysql/nginx/cron/SSL/FTP/DNS/Postfix/Dovecot/Varnish etc.), software installation and upgrade, backup, data migration etc. with wide variety of UNIX flavours (Amazon EC2/Ubuntu/Centos/Fedora/RedHat/Free BSD/BSDI/Solaris/AIX/SCO) - web-development, mostly core PHP/MySQL, as well as HTML/JS/AJAX etc. - general programming/scripting - C/PHP/Perl - custom scripts/web-apps to work with various APIs - Amazon S3, Google, Youtube, facebook, Tumblr, oAuth etc. - Audio/Video/Image/documents processing - ffmpeg, imagemagick, GD, avisynth, lame, Photoshop etc. My username on Hacker Rank: funster