Top Upwork Freelancers

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  1. Timur Birsh

    Timur Birsh

    Unix Systems Expert and Oracle DBA

    Kazakhstan - Last active: 26 days ago - Tests: 7

    Hello, Over the last 15 years, I am working with the following Unix systems: BSD based systems, Solaris and Linux distributions including Debian, RedHat Enterprise Linux, CentOS, Oracle Linux and Ubuntu. Over the past years I have developed a wide range of solutions: VPN, proxy, mail, web, file, Samba, DNS, DHCP, SSO, database, monitoring, backup, virtualization and high availability servers. I am Oracle DBA with the 5 years of experience. I work for financial institution. On my control a 21 databases. Mission critical and big databases runs on the IBM hardware and AIX operating system. Other databases runs under control of Solaris (SPARC) and Linux operating systems. For data protection we use Data Guard. One of the best products of the Oracle is Enterprise Manager Cloud Control. We use it for the databases and hosts monitoring. Its management repository contains a lot of information. It is very useful in building of custom applications (reports, etc). I have work experience with the following Oracle RDBMS versions: 8i/9i/10g/11g. I am big fan of a tasks automation. For small jobs I use shell scripts. For jobs that have complex logic I use Python or Perl. For complex text processing I use awk, sed and shell scripts as a glue. I have 5+ experience of C language programming for Unix. Hardware administration of the following vendors: Oracle (Sun), HP, Dell. I am contributor of the following free software projects: Debian (http://qa.debian.org/developer.php?login=taem@linukz.org), Transmission Bittorrent Client, inadyn Dyndns client. I maintain the following opensource programs: * sXid - http://linukz.org/sxid.shtml * cd-discid - http://linukz.org/cd-discid.shtml I use Git for source code management. I would be happy to help you. Please do not hesitate to contact me.

    $33.33 /hr
    18 hours
    4.97
  2. James Leonard

    James Leonard

    Researcher, Writer, and Editor

    United States - Last active: 2 days ago - Tests: 5 - Portfolio: 1

    One of the things that I enjoyed most about the time that I spent in college was researched based writing. I love it. I like that researched based writing provides an opportunity to learn something new in the process. I am very meticulous and I pride myself on my obsessive compulsion to do multiple revisions until I know my work is as well written as it can be. I enjoy subjects that center around health and nutrition, environmental concerns, the physical sciences, mathematics, and statistical analysis. If you need someone who will spend quality time researching and/or writing for you, I can do it. In fact, I would love to. I can create a great end product for you in just about any format you need. I am most familiar with APA formatting, but am comfortable with MLA and others.

    $11.11 /hr
    15 hours
    5.00
  3. Sini Hakala

    Sini Hakala

    M.Sc.&B.A. Translations, proofreading, articles,

    Greece - Last active: 3 days ago - Portfolio: 5

    Finnish translations,editing, proofreading, articles, research. Born in Finland, studies in the UK, I hold a M.Sc. from the LSE. Thanks to my broad academic background can attack multiple tasks ranging from research and data entry to translations and proofreading/ editing, whether on academic or on business topics. In the past, I have been involved with development of a NASA-funded on-line educational project as a contractor, worked in an import-export agency, as well as created an international database for exporting organic agricultural products. My M.Sc. dissertation was a questionnaire based evaluation of the Make-Up of a Recycler with a twist of environmental psychology. I consider myself task-oriented, detailed aiming at perfection, and thrilled with each opportunity to learn something new with a passion for social sciences. I work best independently and commit to each task at hand.

    $13.50 /hr
    60 hours
    4.98
  4. Gadi Meir

    Gadi Meir

    Access Database and Excel VBA Developer

    Israel - Last active: 1 month ago - Tests: 14 - Portfolio: 10

    Senior Access Database and Excel VBA Developer with over 25 years of programming experience. Native English Speaker. Hard-working, honest, reliable, creative, self-motivated and efficient. Working extensively with Access, Excel together with VBA since 1995 and SQL Server since 2003. Outstanding analysis skills to ensure requirements are fully satisfied. Available to work in different timezones. VP Development in Software house - Access/SQL and Excel developer building complex algorithms.

    $39.00 /hr
    400 hours
    4.95
  5. Russell Owen

    Russell Owen

    Expert complex system architect, C#, C++, DotNet,

    United States - Last active: 3 days ago

    I have over 20 years working on government, military, and civilian systems. I use Microsoft Visual Studio and develop in C++, C#, SQL. I'm a big believer in Microsoft products for large projects that may experience a heavy load or will be used for many years. I work in Java, Javascript, HTML, Brightscript, and can handle virtually any language. I do extensive work with website back-end database and business logic. I believe the key to most business applications is the database schema. I have a lot of experience in video streaming and have developed many Wowza Media applications. I can program Roku channels and integrate them to handle internet streams. I have written several desktop applications used by military and governmental agencies and court systems. My experience goes back to 1975 programming our high school's mainframe which was probably less powerful than an ordinary phone is today. I also have experience converting publications to e-books

    $44.00 /hr
    1,467 hours
    5.00
  6. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 2 days ago - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    45 hours
    5.00
  7. Saeed A.

    Saeed A.

    SugarCRM, PHP, Mysql, Laravel Developer

    Pakistan - Last active: 1 day ago - Tests: 5 - Portfolio: 7

    Over 5 years of industry experience in developing, implementing and maintaining various database driven web applications using opensource technologies like wordpress, SugarCRM, Laravel and OOP PHP.Keen interest in CRM customizations and implementing business solution for companies to grow. - Expert in setup, develop and customize SugarCRM,CMS based website, web application from start to end. - Strong Knowledge of both SugarCRM6 and SugarCRM7 Architecture and extensive development - expert of different PHP frameworks CakePHP, Laravel, wordpress - Experience of client Side languages(JavaScript, JQuery, YUI, BackBone.js) - Expertise in PHP, MySQL, Ajax, XHTML, CSS. - Good knowledge of Web services (SOAP and REST services) - Strong Knowlege of MVC, Software Delopment Life Cycle(SDLC) and Software Design Patterns. - Developing advanced database driven websites & systems including Portals, CMS etc. - Integrations 3rd party Tools & Technologies including Facebook Integration, • Twilio VOIP (SMS, Calls), ABC Financials etc - Mobilink Super Engineer 2012 Specialties Programming Languages: Object Oriented PHP, HTML, CSS, JavaScript(JQuery, YUI, Backbone js, handlebars js), SQL, JSON, XML, Smarty, Facebook Graph API, Frameworks: MVC, SugarCRM, Wordpress Tools & Softwares: WAMP, Firebug, Dreamwearver, Notepad++, Photoshop, MySQL, phpmyadmin, navicate, SQLyog, FileZilla WinSCP, PUTTY, Tortoise SVN, Tortoise Git, Microsoft Offices

    $12.00 /hr
    423 hours
    5.00
  8. Zack Taylor

    Zack Taylor

    Experienced Voiceover Artist

    United States - Last active: 1 day ago - Portfolio: 6

    Zack Taylor is a not a "discount" voiceover artist. He delivers a first-class product at a fair price with same-day turnaround. Credits include AOL, Cisco, Swatch, Intel, Oracle, HP, Mobil, Chicago Tribune, Scholastic Publishing and many more. Zack is known for his clear and articulate voice and has a wide range of styles for American, British and Australian voiceovers, from "conversational & informative" to "fun & friendly" and his skills are perfect for corporate and industrial narration, commercials, audiobooks, medical videos, IVR phone systems and on-hold messages, training and tutorial videos, animation and video games, documentary narration, explainer videos, epipheo and apple-style how-to videos, coach-style interactive adventure-based learning and any and all styles of eLearning courses. If you want the very best voiceover talent to bring your project to life, select Zack Taylor.

    $100.00 /hr
    26 hours
    4.98
  9. Ghulam Mustafa

    Ghulam Mustafa

    Web Developer

    Pakistan - Last active: 29 days ago - Tests: 2 - Portfolio: 8

    Expertise in design, development as well as enhancements of the Web applications and the corporate Web sites,product development, design as well as technical management are some of the illustrious features of my work experience. Apart from that; strong technical skills, proficiency over Internet working technologies, HTML, as well as graphic design are other important features, in my career so far.

    $15.00 /hr
    99 hours
    4.96
  10. Udana Udayanga

    Udana Udayanga

    Codeigniter / Zend | Joomla / WordPress |OpenCart/Magento| Amazon/eBay

    Sri Lanka - Last active: 24 days ago - Tests: 6 - Portfolio: 16

    I am in this field for more than Five years. I prefer using my qualities to be reflected through the work I do. I thoroughly enjoy what I do, especially observing the results alongside my clients. If you may like to work together, please get in touch. And don't worry; if I don't think I can do your job well, I won't take it .Expect high quality and low price from me. If I work well I will grow, thats the bottom line.

    Groups: CubeCart, Sun Certified Professionals

    $15.00 /hr
    1,503 hours
    4.27