Top Upwork Freelancers

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  1. Cuong Le

    Cuong Le

    Senior Software Developer (C/C++/MFC,Java,...)

    Vietnam - Tests: 4 - Portfolio: 4

    Thanks for your reviewing. I am Cuong Le. I have over 6 years of software development experience in C/C++/MFC. Experienced in software development life cycle including requirement analysis, design and implementation. Programming Languages: C/C++, MFC, C#. Databases: PostgreSQL, SQL Server. Software process: CMMI, Agile (Scrum, Jira tool). Other: Visual Studio, Eclipse, UML, GIS, GPS, XML, XML-RPC, COM, Hook, GDI, DirectX (DirectDraw, DirectShow, Direct3D), Touch Screen device and printer device. Further information, please refer at https://vn.linkedin.com/in/ltcuong

    $8.89 /hr
    16 hours
    5.00
  2. GM Roland Agreda

    GM Roland Agreda

    Linux System Administrator

    Philippines - Tests: 2

    Hello, Equipped with years of experience, dedication, knowledge and expertise, i am confident i can be of great value to your company. I am very good at Wordpress and able to design/build and maintain a website, also do some SEO I have enough work experience with linux server, networking and system security, 8 years of experience with linux servers, i'm expert on push scripts, sandbox to production file push, and data retrieval, my previous job was senior system administrator to a bit-coin mining company. I have many experiences with web-hosting company and launching 3-5 sites daily, i am well experienced in WHM/Cpanel/WHCMS and DNS, i have knowledge with wordpress and drupal, and mail configuration MX settings. I love doing server maintenance, and i am available 24/7, i am used to using a staging system is to have a staging and production site, i am well experience on that method, last time i have program a cron job script to push the dev files to sandbox every 4hrs, the developer working on the dev site and no need to FTP to send to sandbox, i had it automatic push, then when the files is on Sandbox QA check the files before manually push to production server, also "manual push" but server side click only 1-2 sec done... Database and Files....

    $6.67 /hr
    179 hours
    4.98
  3. Robert M.

    Robert M.

    Networking/VoIP/Build/Test/SQA Professional

    United States - Tests: 4 - Portfolio: 1

    I'm proficient in networking (Cisco - working on CCNA), operating systems (Linux, UNIX, Windows, MacOS and a few others) as well as Open Source PBX systems such as Asterisk, Trixbox, FreePBX, Elastix and PBXInAFlash. I have done extensive SQA (software testing) as well as scripting (bash) for administration of various servers. I can code in Python, PHP and some Java and Java Enterprise. I've worked extensively with Jenkins for build/deployment environments. I'm quite skilled with web application type servers, including Apache, Tomcat, JBoss, as well as various mail relays - Postfix and Sendmail. When it comes to security, I'm quite proficient at the command line with iptables as well as some open source type firewalls (Sonicwall). I am no stranger to packet analysis/sniffing a network with tools such as Wireshark, ettercap and nmap.

    $25.56 /hr
    118 hours
    4.60
  4. Kirill P.

    Kirill P.

    Asterisk Expert and System Administrator

    Russia - Tests: 10

    I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer. Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc. I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development. I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc. Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

    $25.00 /hr
    10 hours
    5.00
  5. Uladzimir L.

    Uladzimir L.

    Fullstack javascript developer

    Belarus - 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
    198 hours
    4.98
  6. Dmitry Sytchev

    Dmitry Sytchev

    Asterisk/Freeswitch/Kamalio expert, VoIP engineer, Linux administrator

    Russia - Tests: 7 - Portfolio: 1

    I have more than 10 years of experience in installation and support of carrier-grade VoIP services based on Asterisk, OpenSIPS, Kamailio, Freeswitch and proprietary SIP/VoIP software. My professional interests are Callcenters, automated dialer systems and integration of VoIP software with company information flows. You can rely on my strong engineering and programming skills for projects starting from single VoIP server to a complete wholesale/carrier VoIP solutions including billing, call data analysis, security and fraud prevention. I have developed complete SIP solutions for VoIP carriers worldwide: Proxy/Registrars, IVR, prepaid systems, multi-tenant VoIP switches, hardware PSTN gateways (Cisco AS5300/5500, Audiocodes Mediant 2000, Quintum Tenor). I have experience in setup, administration and security of Asterisk, FreePBX, Elastix and FreeSWITCH PBX installations. As a programmer I use PHP, Javascript (both client-side using jQuery and Angular.js and server-side with node.js), Perl (system scripts/applications, Mojolicious webapps). I also have experience in development and administration of MySQL and Microsoft SQL Server databases. I'm experienced network engineer, skilled in routing and switching, general network architecture planning and deployment, network monitoring and security, including HA solutions (heartbeat/pacemaker). I use Zabbix and have some experience with Nagios and other monitoring software. I can also offer you consulting support in VoIP and network technologies.

    $33.33 /hr
    93 hours
    4.95
  7. Jon Garrido

    Jon Garrido

    Gis Developer

    Spain - Tests: 4 - Portfolio: 8

    For more than 10 years working with GIS technologies. I'm expert in Web GIS development with ArcGis API for javascript and Silverlight, Openlayers, leaflet, google maps and many others. I have worked as a GIS analyst in many companies such as Bureau Veritas, Tragsa and Basoinsa. Finally I became a GIS developer, working in Tecnosylva and in Tracom Consulting as a GIS Manager. I can develope as well desktop GIS software with .NET, Arcobjects, Dotspatial and Python. I'm responsalbe of map servers maintenance such as ArcGis for Server, Mapserver and Geoserver. I have been Database manager with SGDB like MS SqlServer, MySql, PosgreSQL+Postgis. ESRI Young Scholars Award 2012-2013 winner

    $39.00 /hr
    183 hours
    4.80
  8. Manimaran M

    Manimaran M

    Ruby on Rails Expert

    India - Tests: 1 - Portfolio: 7

    Over 9+ years of technical design, architecture and hands on experience in web application development. For the past 5 years, I’ve designed mid-size web & SaaS applications using a variety of languages, platforms and technologies. I have full command in Ruby on Rails, Rspec, Cucumber, Twitter bootstrap framework, Sass, Haml, Javascript, Coffeescript, jQuery, Stripe, Devise, MySQL, PostgreSQL etc. Earlier I also worked with mid to enterprise Java/J2EE framework. In the last 5 years I have been leading startup teams from end to end management of clients, projects, team management and hands on architecture using agile development approach. I’m very well versed with lean startup approach from proof of concept phase to launch phase. I value my time and my clients time and always delivery on time. I believe in open communication and can help entrepreneurs/startups to polish/refine, brain storm ideas. I am seeking opportunities to create applications for you/your company or help in enhacing/optimizing your existing application(s). I guarantee high quality work and on-time delivery.

    $27.78 /hr
    14 hours
    4.49
  9. Eugene S.

    Eugene S.

    Professional Developer

    Russia - Tests: 3 - Portfolio: 4

    I have years of experience with C/C++/C#, .NET, ASP.NET MVC, JQuery, SQL, LINQ, Entity Framework, TSQL, etc.I managed to work on various projects, have developed a number of websites and services for international companies as well as desktop applications for the small business. I have skills with wide set of Microsoft technologies. Also I have skills with Delphi, VB, have graduated Math dept and am seeking interesting projects with great wish to collaborate.

    $16.67 /hr
    63 hours
    4.98
  10. Vepa Durdiyev

    Vepa Durdiyev

    Senior C# Developer, Algorithm Development Professional

    Turkey - Tests: 5 - Portfolio: 4

    I am a senior C# developer with excellent knowledge of algorithm development and good sense of design. When designing an application my priority is not just functionality, but also performance, user friendly UI and appealing graphics. Before finishing a project I always make sure to run all possible tests so you won’t be encountering any errors in future. I have extensive knowledge of developing enterprise solutions, such as POS/CRM/ERP systems and other business management applications. In addition I also have a lot of experience creating other various windows desktop applications, such as data filtering, price comparing, profit calculating, keyword/product matching, user monitoring applications and many other. I am also a very quick learner and able to adapt fast. Here is the list of programming languages and technologies I excel at: C#, C, C++, Microsoft SQL Server, Windows Forms. My Goal is not to complete the task, but complete it in best possible way. I have a perfect rating of 5.0 and I intend to keep it so. I have never said 'no' to a bug fix, nor I ever charged for it, and I won't in future. By hiring me you don't just hire a programmer who is a professional in his job, but you are also guaranteeing yourself a life time support and bug fixing for your project.

    $35.00 /hr
    279 hours
    5.00