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Last updated: October 1, 2015
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Andrei Volkov

Andrei Volkov Agency Contractor

Linux specialist (Sec/Opt/Dev, C/Perl/Python/PHP/BASH)

Belarus - Tests: 5 - Portfolio: 13

Important: ------------------- Enhanced shield of your Web application with mod_security! Should be always. It is task #1 after installation ANY web application! ------------------- About Me and more: ------------------- I have over 16 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if I found some problems. And I am always interested in looking for mostly economical and productive solutions. Of course, Cpanel, WHM, Webmin, Plesk .... I know how are working these web-wrappers and I support their. I can will tune and to make the checking of these wrappers. But that more important !! I can work without this))) Directly use configuration files of services and etc etc. Usually, it is better way on dedicated servers. ) TCP, IPv4 , IPv6, IPX ... - WiFi, WEP, WPA, WPA2 ... - SElinux, Apparmor, Smack, Tomoyo ... - LAMP ( Apache, Nginx, PHP, Perl, Mysql, Mongo), REDMINE ... - Cpanel, Zpanel, ISP ... - MySQL clustering and replication DNS servers ... - SENDMAIL, EXIM, POSTFIX (POSTFIXADMIN,MYSQL,DOVECOT,POLICYD) ... - HPC system: Torque, Maui, Moab for HPC clusters, Infiniband, FC interconnect, iSCSI, SCST, DRBD, OFED, OPENMPI ... - OpenLDAP ... - VPN with OpenVPN, PPTP, StrongVPN ... - Nagios, Zabbix, Ganglia, OSSEC ... - SVN, CVS, GIT ... - KVM, Xen, OpenStack, Proxmox ... - NBD, RAID, LVM ... etc etc During these years I have been in a large number of tasks related to administration of network devices, as well as with simple and complex server systems. I manage servers for the HPC tasks and for network infrastructure of Internet and Intranet - DNS,DHCP,*FTP,HTTP(S),MAIL etc etc. The main goals - the monitoring of the performance and the security. I also implement tasks of data backup and troubleshooting, support for the users. I have comprehensive work skills with systems based on Debian, Redhat, CentOS, SLES, OpenSuse. I've got more than 8 years of experience in developing the different software with use of C, Perl, Python, Bash, HTML on system and user levels. For example, very important skill in developing and the modification of RPM packages (rpmbuild, rebuild, kernels), custom kernels and etc etc. ------------------- Often: ------------------- How the standart service for VPS's and VDS's projects and dedicated servers: IDS, IPS, the control of contents of log's files, the control of load of the cpu, the memory, the hard disks; the backups of the databases and the files; install or update software, consultations. Emergency call via sms to cell phone. ------------------- STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. VERY OFFTEN: IF YOURS WP WAS HACKED 1. disable plugins 2. execute # diff -r dir1 dir2 3. repeat for plugins if you have last version of WP code: ~ 80% cases - problems: plugin low quality (look on author: from where and who is) ~ 15% cases - problems: theme low quality (look on author: from where and who is) ~ 5% 0day of WP also you need disable all shell function in php and enable suphp/suexec modes. STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. I am getting a lot questions about reliability and quality distributives/clones Ubuntu. Results on practice - Ubuntu clones - worst for server. It is truth. If you $buntu guy, I can't help you right now. I only can recommend Debian way for server. =============== 3. Nginx of course is good program. For small/middle vps. But in serious projects - apache. Nginx will be suitable for frontend. It is only practice. Always for all web application should be mod_security module. Firewall of level of web application on 7 level of OSI. Each web application/site should be under own user in environment of vps or on dedicated servers. =============== 4. By topic Wordpress. For optimisation services of OS , namely system IO(type of disks or partitions) and DB(type of engines of tables), need to use empty installation (default variants). Most problems of work WP contains in itself - customized plugins or themes. For analyze pages need begin with such services as =============== Sunday - day of rest. Or in emergency case - payment with double rate. best regards, Andrei / PS: With love from USSR. ;-)

Associated with: UPWORK.LINK

100% Job Success
$16.00 /hr
1,023 hours

Juan Manuel García Del Moral

Juan Manuel García Del Moral

Sr Unix/Linux Management and Infrastructure Expert

Argentina - Tests: 2 - Portfolio: 6

I have 12 years of experience in Unix/Linux Administration and Development. During this time, I've developed professional solutions using the following technologies: Linux, Unix, Perl/Bash Scripting, Apache, MySQL, PHP, Tungsten Replicator, XEN, VMWARE and more. My main goal is to become your preferred IT partner when you need to get any project done. I want to build a strong and long term working relationship with increasing benefits to both parties. I strive on customer satisfaction regarding: - Time and Cost Effectiveness - Quality Assurance - Outstanding product performance - Fluent and Friendly Communication - Availability.

$25.56 /hr
329 hours

William Grzybowski

William Grzybowski

(Web)Development and Unix-like Consultant

Brazil - Tests: 7 - Portfolio: 2

Before I even go to university i started working with Web-development. My first experience was about 6 years ago with pure HTML using frames in Dreamweaver 3. Since then I have worked hard to improve my skills in every way possible, not just as a web-developer but as a general programmer, and now I work essentially with Open Source software like Python(+Django), PHP, Linux/FreeBSD, PostgreSQL, etc.My degree in computer science helped me to understand the basics of a computer from the bits in the processor instructions to multimedia, and thus can be used everywhere to improve the final result of a project.

$33.33 /hr
3,500 hours

Walker Leite

Walker Leite

Linux System Administrator

Brazil - Tests: 2

Student of Computer Science, working with GNU/Linux since 2007. Expert in Debian/CentOS-Redhat web/database server installation and administration. Knowledge in PHP, HTML, CSS, javascript, Bash scripts, Perl, Mysql. Today, manages Cloud Amazon AWS EC2, RDS, Loadbalancer and Autoscaling services for Praiseweb (hosting provider), and their clients.

$15.00 /hr
13 hours

Nikolay Serev

Nikolay Serev

Linux system administrator with Perl and Bash experience

Bulgaria - Tests: 12

I am computer and network enthusiast. I've been working as a System Administrator since 10 years ago. I have vast experience with different technologies - Apache, Nginx, Nagios, DRBD, Postfix etc. Also I have experience using Perl and Bash as scripting languages. This is the first time I am starting my online career, so right now my goal is to complete successfully all the projects that I take.

$11.11 /hr
8 hours

Ahmed N.

Ahmed N.

Senior Linux Admin, Cpanel, RedHat, Ubuntu, Perl, BASH, Virtuozzo

United Arab Emirates - Tests: 10 - Portfolio: 2

Over the last 12 years I have developed a wide range of skills and my objective is to leverage my significant technical skills in a position as Unix/Linux Administrator I have extensive experience in installing/configuring different software including but not limited to Apache, PHP, MySQL, PostgreSQL, exim, postfix, dovecot, BIND, POP/IMAP, SMTP, SSL, SSH, proFTPd, pureFTPd, iptables (APF/CSF), Kayako, WHMCS, ClientEXEC,OpenVZ,Virtuzzo,Nagios.

100% Job Success
$18.89 /hr
338 hours

Stephane Travostino

Stephane Travostino

Systems and software specialist

United Kingdom - Tests: 8 - Portfolio: 3

I like working on anything revolves around the IT ecosystem, and find the most fun in troubleshooting problems and working around strict requirements and deadlines. My peculiarity is discovering the root cause of a problem and working out the best solution in a very short time. I'm a self-taught Linux systems administrator, full stack developer and jack of all trades in systems design and maintenance. I have experience in C and Python programming, software design and management, Linux and Solaris systems administration, and high expertise in maintaining and tuning MySQL databases. I also develop modern and rich web applications with HTML5, Javascript and AngularJS. Other interests in web design, typography and improving team processes and workflows.

100% Job Success
$60.00 /hr
1,088 hours

Tadej Magajna

Tadej Magajna

Zend Certified Experienced Web developer

Slovenia - Tests: 4 - Portfolio: 5

I am a Zend PHP 5.3 certified developer and back-end programmer with over 6 years commercial experience. An expert in working with CMS systems ( especially Drupal and Wordpress). While working in UK, led a large project building a huge Drupal Site. A master in working with complex MySQL queries and database indexing and optimization. An expert in working with cashing systems ( varnish, memcache). Experienced in working on web server automation, custom bots, crawlers. I can write you any type of bot or crawler you'd like for a reasonable price.

100% Job Success
$19.50 /hr
98 hours

Artem Z.

Artem Z.

Symfony2/Laravel Developer | Russia

Russia - Tests: 5 - Portfolio: 2

Just one question to which the client wants to know the answer. Why should I choose you and not the other guy? Let me list my main advantages which give good results in my work. 1. My work is also my hobby. Everyday I learn something new from web development and have a wide-range programming skills. Now I’m focusing on PHP and Symfony2/Laravel frameworks. 2. Strong Linux background. Want to set up web server, database or have issue with permissions? No problem, just ask me. 3. Knowledge of the latest web development trends. Want a modern design? I will help you to find and choose it. Responsive, flat, long shadow, whatever you want. 4. Deployment and testing. This is one of the most important part when your project is done. Capistrano, Ansible, git hooks, unit tests will help to do this procedure more smooth and prevent to waste your and my time. 5. Staging. You will be able to see intermediate result of my work in any time. I will deploy it on staging server in one click. 6. Experience with multiple PHP frameworks. Can’t choose platform for your project? I offer you next options. Small, medium web app - Silex, Laravel. Enterprise web app - Symfony2. 7. A competent English. We won’t have language barrier. I am able to prove my advantages in interview or you can pay attention to my portfolio and tests result below this section. Thanks for your attention. Best wishes, Artem Zhuravlev.

75% Job Success
$15.56 /hr
542 hours