Top Upwork Freelancers

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  1. Suren Karapetyan

    Suren Karapetyan

    Senior System/Network Administrator (devops)

    Armenia - Last active: 1 day ago - Tests: 8

    An ambitious *nix System and Network Administrator with eight years' experience working in ISPs and other service providers maintaining existing and designing new infrastructure. DevOps skills which help to bridge sysadmins' and developers' teams. Master's degree in Math Sciences. I'm looking for interesting projects which use new/young technologies and provide new challenges. Would also be great to work with interesting people.

    $40.00 /hr
    1,027 hours
    4.93
  2. BABI SARAFARAZ

    BABI SARAFARAZ

    4+yr Exp iPhone | Android | PHP(Drupal,Wordpress) Developer

    India - Last active: 5 days ago - Tests: 1 - Portfolio: 3

    ✔ If you are looking for long-term engagement, qualitative work, timely delivery, and a developer to take care of your development needs then I am the person for whom you are looking for. ✔Experienced with - iPhone/Android/php - All kind of parsing (XML, JSON, RSS, SOAP, WSDL) - All kind of API (Twitter,Facebook,dropbox,googleDrive) - Google API (Map,Place,Drive,Analytics) - Encoding/Decoding - Data upload/Download - Database(Core Data,Sqlite,Plist) - Audio / Video - In-App Purchase - Bar Code,Qr Code - All Animations - GeoLocation - Chart Integration (Pi,Bar,Line) - Push Notification (Local / Server Side) - Ad Integration (iAd, Revmob, Adwirl, Admob, Chartboost, TapJoy, Mopub,etc...) ✔Available - I Will always available to Communicate(9am-9pm IST). ✔Achievement * TITANIUM CERTIFIED DEVELOPER (http://developer.appcelerator.com/devlink/profile/1286877/sarafaraz-babi) ✔Let's work together to build bigger smart phone apps and Websites. Best Regards, Sarafaraz Babi.

    Groups: Appcelerator Certified Developers

    $15.00 /hr
    935 hours
    5.00
  3. Vasil T.

    Vasil T.

    Senior Project Manager, Java/Android developer.

    Belarus - Last active: 14 days ago - Tests: 5

    Project/department manager with over 8 years (since 2007) of management experience and 15 years overall (since 2000) experience in IT. Got reasonable technical background by starting as a junior Java developer and growing up to Java department manager. Good intercultural communication skills. Willing to solve complex tasks. Doing some Android development as a hobby and to keep technical knowledge up to date. Android: GPS (NMEA), Bluetooth, Accelerometer, Maps, GCM, Google Play Services (Leaderboard, Achievements), AdMob, Google Analytics, Chat (XMPP, Smack, OpenFire), Voice Recognition, Augmented Reality (OpenCV)

    $20.00 /hr
    69 hours
    5.00
  4. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 1 month 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
    40 hours
    5.00
  5. Ray E.

    Ray E.

    Experienced Software/Hardware Engineer

    United States - Last active: 13 days ago - Tests: 7 - Portfolio: 5

    I am a creative, passionate professional with a solid record of envisioning, producing and maintaining technical solutions for business and entertainment activities. I have over 30 years experience working on projects including the Turtle Talk show, Enchanted Art Paintings, and Spaceship Earth remodel for Disney, major projects for Tribune Corporation, including implementing an automated intranet AdMARC reporting system, and developing and consulting on custom apps, websites, and applications, in all major programming languages and operating systems. I have a proven track record of solving difficult problems and am the "go to" person for difficult hardware/software tasks. My motto has always been that if you can think it, I can do it. I have a background in electronics and can also create custom circuitry, and the software to run it. From creating time-saving innovative solutions, to fixing thousand dollar computers with a 22 cent part, I am passionate about serving your software and hardware needs, and can get your project or prototype done ahead of time, below budget, with better results. Please feel free to contact me to discuss your project needs or if you'd just like to chat and find out more about me. Thank you!

    $150.00 /hr
    76 hours
    5.00
  6. Viktor Naryshkin

    Viktor Naryshkin

    Windows Phone expert

    Ukraine - Last active: 5 days ago - Tests: 3 - Portfolio: 20

    Tons of successfully developed Windows Phone projects. I'm TOP-rated Windows Phone expert on stackoverflow (http://stackoverflow.com/users/820813/ku6opr) and I'm open for new projects I'm degreed in Computer Science and have 5 years of background in C#., NET , Silverlight, WPF (oDesk verified). I'm interested in Windows Phone, Windows Phone Universal apps that target Windows and Windows Phone and Windows 8 projects If you need a skillful mobile developer, I will be glad to work with you. I'm provide safe outsourcing services, secure processes, and top quality results for your business. Technologies: Windows Phone 8 / 8.1 Windows Store / Windows Phone 8.1 Universal app Windows Store Strongest skills: A deep familiarity with C# and XAML Experience working with push notifications, live tiles and Windows Phone SDKs Experience with third-party libraries and APIs Solid understanding of the full mobile development life cycle

    $33.00 /hr
    498 hours
    4.98
  7. Stefan Thorpe

    Stefan Thorpe

    AWS Architect and PHP Coder

    Hong Kong - Last active: 1 month ago - Tests: 2 - Portfolio: 1

    IT professional with 13 years of management and hands-on experience providing technical solutions to support strategic business objectives: ► Articulate and deploy complex/hybrid public and private cloud solutions on Amazon Web Services. ► Design, develop and implement PHP solutions. ► Provide the shape of technological solutions across Unix systems. ► Analyze software and configuration requirements and specify requirements. Check out Http://smarterer.com/stefanthorpe for my test score in AWS, PHP and more.

    $45.00 /hr
    313 hours
    5.00
  8. Anton F.

    Anton F.

    Web Developer

    Belarus - Last active: 1 month ago - Tests: 1

    Ruby on Rails - since August 2011 to present day - over than 12 projects Included - HTML5, Javascript, AngularJS, jQuery, CSS3, SASS, CoffeeScript ,Slim, Haml, MySQL/Postgre/SQlite, Sphinx, Solr I really like working with Ruby on Rails, but nonetheless I like tasks included clientside technologies. Because either frontend and backend can contain difficult problems. And solving difficult problems is most interesting part of the programming.

    $16.67 /hr
    25 hours
    5.00
  9. Uladzimir L.

    Uladzimir L.

    Fullstack javascript developer

    Belarus - Last active: 12 days ago - Tests: 3 - Portfolio: 1

    Hi! My name is Uladzimir and I'm reliable and highly skilled fullstack javascript developer with over 5 years of experience in IT and more than 2 years in javascript. Right now my main focus is: - Frontent: AngularJS(code contributor), Backbone.js, React.js - Backend: Node.js, io.js - Mobile development: Cordova/Phonegap, Ionic framework As well I took part in architecture development of several distributed, scalable and high-loaded solutions like credit history management system and airfare search engine. In my free time, I like to work on my own projects, that's why I can give you some advice for your product. I always try to keep my hand on the pulse of technologies and play with some not mainstream technologies like Scala, Golang etc. I look for new challenges and great opportunities to design and develop different projects. I always try to keep my customers happy. I do opensource a bit. You can check out my github account: https://github.com/lugovsky As well you can check out my LinkedIn profile: https://www.linkedin.com/profile/view?id=301319723 Feel free to contact me, you won't regret :).

    $55.56 /hr
    173 hours
    4.98
  10. Leonid Sydorenko

    Leonid Sydorenko

    MQL4, C#, SQL, MS ACCESS - Expert, developer and just a good guy.

    Ukraine - Last active: 1 month ago - Tests: 1

    I am team leader of small group developers in IT company. We specialize at creating expert advisors at MQL4/5 and C based trade platforms, C# applications, SQL and MS ACCESS databases, SharePoint projects. Have more than 5 years of professional experience in creating expert advisor At MQL4/5 and C based trade platforms , C# applications, SQL and MS ACCESS databases. And more than 3 years of professional experience in SharePoint Development, Configuration and Administration, Office 365 Development.

    $22.22 /hr
    158 hours
    4.87