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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

Muhammad Akmal

Muhammad Akmal Agency Contractor

Cisco Certified Engineer CCNA&CCNP, System admin and Virtualization

Pakistan - Tests: 7

I am a Cisco Certified Network and Security Professional with more than 15 years experience in Managed Network and Security Services. I have expertise in routing, switching and Network Security across all industry leading vendors. My passion to deliver quality solutions has taken me to full-time freelancing, with a loyal clientele base spanning the globe. I am available around the clock and ready to provide expert assistance as and when my clients call and in their preferred time-zone. --- Cisco--- Cisco 1700 Cisco 2500 Cisco 2600 Cisco 3800 Cisco 7200 Cisco 800 Cisco 1800 Cisco 1900 Cisco 2800 Cisco 2900 Cisco 3900 Cisco RV Seriese WLC 5500 WLC 4400 WLC 2500 cisco aironet 1000 cisco aironet 1100 cisco aironet 1200 cisco aironet 1300 cisco aironet 1600 cisco aironet 2600 cisco aironet 3600 Cisco ASA 5500 Series Cisco AS 5300 Series Cisco AS 5400 Series Cisco PIX 500 Cisco Switch Catalyst 2960 Cisco Switch Catalyst 3560 Cisco Switch Catalyst 3750 Cisco Switch Catalyst 3850 Cisco Switch Catalyst 4500 Cisco Switch Catalyst 4900 Cisco Switch Catalyst 6500 Cisco 4900 4900M Series Cisco Nexus 5000 Series Cisco Nexus 7000 Series cisco Small Business 100 cisco Small Business 200 cisco Small Business 300 cisco Small Business 500 --- Juniper --- Juniper J Series ->Juniper SRX Series SRX100 SRX110 SRX210 SRX220 SRX240 SRX550 SRX650 SRX1400 SRX3400 SRX3600 SRX5400 SRX5600 SRX5800 ->SSG Series SSG5 SSG20 SSG140 SSG320M SSG350M SSG520M SSG550M --- HP --- HP 6600 HP 5820 HP 5800 HP 5500 HP 5100 HP 5120 HP 3800 HP 3600 HP 3500 HP 3100 HP 2620 HP 2530 HP 830 HP 1910 HP 1810 HP 1410 HP 1405 --- Sonicwall --- TZ 215 TZ 210 TZ 205 TZ 200 TZ 170 TZ 180 TZ 105 --- NetGear --- AC1900-Nighthawk Smart WiFi Router AC1750-Smart WiFi Router AC1600-Smart WiFi Router AC1450-Smart WiFi Router AC1200-Smart WiFi Router AC1200-WiFi Router N900-CENTRIA WiFi Storage Router N900-WiFi Router N750-WiFi Router N600-WiFi Router N300-Trek Travel Router and Range Extender N300-WiFi Router N450-WiFi Router N300-WiFi Router N150-WiFi Router --- Routers & Firewalls -- Vyatta Pfsense MikroTik D-Link Routers and Switches CehckPoint Cybercoam samsung ubigate routers Riverbed --- WatchGuard --- XTM 2 XTM 3 XTM 5 XTM 8 Firebox X1250e Firebox X750e Firebox X550e Firebox X55e/X55e-W Firebox Edge X20e/X20e-W Firebox Edge X10e/X10e-W Firebox X5500e Firebox X6500e Firebox X8500e --- fortigate --- Fortigate 30B Fortigate 30D Fortigate 50A Fortigate 50b Fortigate 60c Fortigate 60D Fortigate 100c Fortigate 100D Fortigate 150D Fortigate 300A Fortigate 300B Fortigate 300C Fortigate 300D Fortigate 1000A Fortigate 1000C Fortigate 1000D --- Dell --- Dell Smart Lan Dell 3500 Dell 7000 Dell N200 Dell 6200 Dell 5500 Dell S-Series Dell Z-Series Dell N400 Dell 8100 --- Zyxel--- Zywall USG Series Zywall P Series I also have good understanding and work experience of -Microsoft family of servers and clients operating systems -Cloud Service Providers • Aamazon Web Services • Azure • Rackspace • Linode -Backpup Products • Symantic Backup Exec -Open source VPN solutions • openVPN • openSWAN • strongSWAN • Logmein Hamahi • -Virtualization Solutions • Hyper-V • Vmware • Xen -RRM Tools • Kaseya • Labtech • AutoTask • Connectwise • ManageEngine • Catci • OpenNMS • Solarwinds • Nagios • WhatsUP Gold • PRTG • MRTG • Microsoft Visio Linux Distros • Redhat • Debian • Ubuntu • Centos • Fedora • clearOS • FreeBSD • MacOS

Associated with: Aliado Inc Agency, Cloud Support Agency

79% Job Success
$33.33 /hr
1,356 hours

Volodymyr Kostanda

Volodymyr Kostanda Agency Contractor


Ukraine - Tests: 42 - Portfolio: 41

Owner and CEO at AdoriaSoft LLC. AdoriaSoft offers full cycle software development services and implements all stages of projects for our customers: - Research and estimation - Requirements definition - Architecting - Development - Graphical design and User experience design - QA - Support and updates Platforms that we develop for: - iOS (iPhones and iPads of different versions) - Android phones and tablets - MacOS - Web - Windows desktop - Windows Server - Windows CE - Windows Mobile PPC and SP 5.0, 6.0, 6.5, 7 editions We - have different real devices for testing (Android phones and tablets, iPhones, iPads of different generations, Macbooks, etc), no emulators. - work with both native and crossplatform frameworks - use an established design/development/testing lifecycle, follow scrum - have our own development servers with tasks management system (JIRA), source control (Git), continuous integration and build server (Bamboo), etc. - can easily work with time zones like PST, EST, etc. - offer high quality and cost effective solutions for our customers Technologies/Languages/Libraries/Frameworks: - ObjectiveC, iOS SDK, Mac OS SDK, XCode - Java, Android SDK - C++, STL, Boost, ATL, WTL, COM, MFC - Windows API, DirectShow, DirectSound, Sockets, Completion Ports, OLEDB, TAPI, GDI - C#, Managed C++, ASP.NET, LINQ, ADO.NET Entity Framework, WPF, Compact Framework, Mono.NET, Monotouch, Xamarin - Appcelerator Platform, Titanium, PhoneGap - MS SQL Server, T-SQL, Oracle, MySQL, NoSQL, MongoDB - Cloud platfoms: Amazon Web Services ( AWS ), Microsoft Azure - Web technologies: REST and SOAP web services, JavaScript rich client libraries, HTML5, CSS3 Our competences: - business automation software - System utilities for MacOS, Windows and mobiles platforms - Information security, cryptography, steganography - client-server applications - Wireless 3G/4G, Bluetooth, WiFi applications - VoIP, voice codecs, data signal processing - Complex Web applications and portals (ASP.NET, PHP, REST web services, JavaScript rich clients)

Groups: Application Developers Alliance

Associated with: Adoriasoft

100% Job Success
$29.00 /hr
15,504 hours

Carlos G.

Carlos G.

Tier1/Tier2 Tech Support Specialist/Deskside Support Analyst

Mexico - Tests: 4

Reach a competitive position and participatory; that my contract and position be rentable, with availability, cooperation, and bringing my experience to achieve my personal and professional needs which one of these would be to get a higher pay.

100% Job Success
$16.67 /hr
6,390 hours

Ahmed B.

Ahmed B.

Pakistan - Tests: 2 - Portfolio: 4

My aim is helping my customers on the technologies below: • Cloud Computing, Office365, ADFS, SSO, Google Apps, SaaS, BPOS, Microsoft Online Services • MS Exchange Hosting Solution, Administration of Global Messaging (Exchange Server E2k, E2k3, E2k7, E2010, Administration/up-gradation/transition/migration/Design) • BlackBerry Enterprise Server, BlackBerry Enterprise Server Express (BES 3.6.X, 4.0.X, 4.1.X, 5.0.X, BESx, Administration/Cut-Over, up-gradation/migration/Design) • Microsoft Application Virtualization APP-V 4.6 SP1, Microsoft Lync2010, Live Communication Server, Live Webmail, SharePoint Online, Lync Online. • Virtualization, Hyper-V, SCVMM, App-V, • Exchange High Availability DAG, Clustering LCR, SCR, CCR • SMS (System Management Servers), MOM (Microsoft Operation Manager), NetIQ, Remedy • Backup Plan for CA BrightStor (ArcServe) (Backup solution for Tape Library).

Groups: Microsoft Certified Professionals

92% Job Success
$25.00 /hr
1,421 hours

Saroj Kar

Saroj Kar

Expert Technical Writer with Cloud Computing, Big Data experience

India - Tests: 7 - Portfolio: 7

I am a System Administrator, Writer, and Editor with the architectural skills, experience and insight to computing platform infrastructure or data operation. Over the years, I have developed extensive in-depth understanding of Cloud Computing, Big Data, Virtualization, Web Services, Mobile Cloud, Social Cloud, DevOps, Internet of Things and other related platforms. My work history as a System Administrator, technical support, web research, administrative support, freelance writer, editor, blogger, proofreader, news desk writer etc. reflect the versatile I offer. I have exposure to following works experience: - System Administrator - Application Management - Technical Support - Customer Support - Data Entry - Data Extraction - Content Writing - Technical content Writing - Non Technical Article Writing - Web Based Research - Excel based jobs - Internet Marketing jobs - Research based jobs - OCR conversion

93% Job Success
$10.00 /hr
4,117 hours

BP Singh

BP Singh Agency Contractor

*MSP Consultant, Kaseya Consultant,labtech, Exchange, Vmware,AD*

India - Tests: 4 - Portfolio: 1

ITechServ is a company with expertise in IT infrastructure management and has certified people having expertise in their skills. A MCSE certified guy handles Microsoft systems and CCNA Tech handles Cisco firewalls, routers and switches. So we believe in that every task/issue/work needs to be handled by a resource having expertise in his area. We work as a team to complete IT infrastructure project. Provide tier 1, 2 and 3 level supports as a team and provide the Best services so that the delivery of the work has a quality and is done in the minimal time. We provide IT services with a difference.

Associated with: ABCTECHSERVE, ITechServ

100% Job Success
$33.33 /hr
8,177 hours

Lawrence K.

Lawrence K.

Information Technologist

Kenya - Tests: 5 - Portfolio: 1

Am an Information Technologist and my job experience is incline more into Web/Internet researching since I believe that current and up-to-date Information is so much available on the Internet. As an Information Technologist I understand how Information is so vital and important on our daily lives so I choose to learn and provide competent service in regard to this. So my main goal is to provide quality and up to date service to every client and a to be a competent contractor.

$4.44 /hr
1,144 hours

Gourav Shah

Gourav Shah Agency Contractor

Cloud, EC2/AWS, Devops, Big Data, NoSQL, Chef Puppet Ansible Expert

India - Tests: 7 - Portfolio: 5

I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc. I have worked as a Lead Operations Engineer, IT Manager, managing over 500 server in co located data centers running on various services such as python, java, mysql, postgresql, lamp technologies. Proficient in remote server administration, cloud computing, virtualization etc. I am proficient in libre/open source tools and technologies, command line utilities, scripting, configuration management systems, source code management, computer networks, CMS, Web Frameworks, LAMP, Python/PHP /Ruby on Rails applications deployments etc.and enjoy working on the complex problems and posses excellent troubleshooting skills. I have founded a consulting firm by name Initcron, which is now a AWS Consulting Partner. Initcron specializes in Cloud Computing, Devops, Big Data etc.

Associated with: Initcron Systems Private Limited

100% Job Success
$50.00 /hr
3,033 hours