Top Upwork Freelancers

Clear all filters
  1. Sergey Tikhomirov

    Sergey Tikhomirov

    Expert Ruby on Rails developer

    Ukraine - Tests: 4

    I have been working with Ruby on Rails since 2007 and I can call myself the Ruby on Rails expert. I worked on different kinds of projects and have strong skills in front- and back-end development. Have great knowledge in Ruby and Ruby on Rails, HTML, CSS/SCSS, JavaScript and CoffeeScript. I love Vim text editor and really passionate about it. I am a long-time Unix/Linux user (~ 10 yrs), can setup server without problems. Have experience with different cloud services, such as AWS and Heroku. Have great experience of working in distributed teams.

    $45.00 /hr
    66 hours
    5.00
  2. Jibran Ahmed

    Jibran Ahmed

    Python Web Developer (Django)

    United Arab Emirates - Tests: 12 - Portfolio: 6

    I'm a Python developer with over 5 years of experience in developing web apps in Django. I have worked on some of the biggest sites in the Middle East, including Dubizzle (the #1 classifieds portal in the UAE and MENA region), Nabbesh (A Middle East focused freelancing platform) and JustRentals.com. Each of these sites generated millions of hits per month, with Dubizzle being the #7 ranked website in the UAE. Working at these scales has taught me a lot about how to develop Django based web applications that can scale to handle any amount of traffic, and I've worked with teams of over 50 developers, learning how to write good clean code that others can work with.

    $40.00 /hr
    72 hours
    4.67
  3. Igor Zekov

    Igor Zekov

    Delphi|C++|Access| Excel|VBA

    Ukraine - Tests: 4

    Over the last 8 years, I have developed several desktop applications using Delphi. That was applications for working with databases through ADO mechanisms, working with GSM modem using AT commands, sound proccessing, etc. I am seeking opportunities to build applications for you or your business. Have developed and worked with Access databases with more than 1 million+ records, handled big data arrays in Excel, proccessing it with Excel formulas or VBA, importing/exporting to Access. I also have experience in the following areas: C++, PHP, JavaScript, SQL, Excel VBA, MS Access, Photoshop, 3dsmax, OpenGL.

    $10.00 /hr
    57 hours
    5.00
  4. Joaquín González Carrasco

    Joaquín González Carrasco

    Oracle performance tuning DBA/developer

    Spain - Tests: 4

    I am an experienced Oracle DBA/developer. I've been working in jobs related with Oracle Database since 2002. I've been focused around managing Oracle DB, troubleshooting Oracle performance, tuning Oracle instance, relational database design and development and tuning of SQL and PL/SQL to improve performance. Also SQLServer, MySQL and MongoDB Knowledge. You can check my linkedin full profile at: http://es.linkedin.com/in/joaquingonzalezcarrasco/en You can check my pl/sql & database design knowledge at: https://plus.google.com/103695399328541337041 Currently ranked 42th among 10.000 players all over the world, playing daily quizzes about PL/SQL since 2010. Currently ranked 4th among 500 players over the world, playing weekly quizzes about Database Design since 2013. I'm currently available only for part time jobs.

    $20.00 /hr
    27 hours
    4.70
  5. Rahul Singh

    Rahul Singh

    Titanium Appcelerator Developer

    India - Tests: 3 - Portfolio: 3

    I am experienced titanium mobile application developer with more than 3 years of experience developing applications using Appcelerator Titanium. I have strong command on alloy framework, widgets, models, database , REST API's (JSON), SOAP API's. Also i have good experience in developing Titanium native modules for ios and android both. Experience in developing native apps android ios.

    $17.00 /hr
    50 hours
    4.33
  6. prachya boonmak

    prachya boonmak

    Delphi,C++,GIS,TCP/IP,Winsock,ASP.NET [where Quality Comes First]

    Thailand - Tests: 2

    I have over 20 years of experience in desktop software development. The applications I developed such as Parental Control, SSH/VPN client and other TCP/IP or networking related softwares. I also have experience in database application development such as Accounting, Inventory Control, Calendar/Scheduling Management etc. I developed all those softwares using Delphi, C++,C# as the major languages depending on the nature and constraint of applications. With my long time experience, I've learnt not just how to write good quality of code, yet how to make a good software product as full software development life cycle (SDLC). I decided to start freelancing because I love to make software, not just to be a management in a firm.

    $17.78 /hr
    1,185 hours
    4.71
  7. Vikram Singh Saini

    Vikram Singh Saini

    Business Solutions Specialist

    India - Tests: 1 - Portfolio: 8

    Delivering satisfaction to Upwork's clients for their investment along with 110% quality deliverable. I am capable of following strict directions as well as conceptualizing solutions that will work for you. I have an excellence reputation as a hard worker and talented developer. Belief :- Money is by-product of high quality work. ------------------------------------------------- Four 'E' summarize me: ------------------------------------------------- 1. Expert in development using C#. 2. Extremely professional with clients. 3. Excel in written & verbal communication. 4. Exceed more than your expectations. ** Focus on building long lasting relationship with client(s). ---------------------------------------------------------------------------------------------------------

    $16.67 /hr
    65 hours
    4.98
  8. Parama D.

    Parama D.

    .NET, C#, ASP.Net, ASP.Net MVC, Android, iOs Developer

    Indonesia - Tests: 3

    Over the years, I have developed a wide variety of product from basic personal website, to a large scale company management system. My main core of skill set are on software design, OOP, .NET framework, SQL, Android and IOS development and also have good experience in the following areas such as PHP (with or without framework) On my spare time, I've also built couple of mobile application one of them with gamification concept, running on multiple platforms, which successfully used in one of the largest airline company.

    $15.00 /hr
    78 hours
    5.00
  9. Vu Duy Tu

    Vu Duy Tu

    JavaScript, CSS, HTML and Java

    Vietnam - Tests: 3 - Portfolio: 2

    I have 6 years experience developing web and desktop applications . I have some projects created with PHP, JAVA (Applets, Swing, JSP, JSF, JBOSS, Servlets), JavaScript, CSS. Try to find more opportunities for development of websites as well as desktop applications. I consider myself self-taught and always willing to acquire additional skills and training as required. I also havesome experience in SOA (Service Oriented Architecture), XML, AJAX and Photoshop. Skin by ohloh: https://www.ohloh.net/accounts/tuvd My git: https://github.com/tuvd08

    $22.22 /hr
    16 hours
    4.94
  10. Aaron H.

    Aaron H.

    Cisco UC Specialist/Expert - 10 Year CCIE

    United Kingdom - Tests: 3 - Portfolio: 2

    A specialist in the full range of Cisco Unified Communications with full CCIE Voice qualification dating back 10 years, and over 15 years experience in IT primarily as a Cisco Channel Partner lead engineer in the UK. Strong design, deployment, administration, development and troubleshooting skills in: Communications Manager (CUCM/CallManager from version 3.1 to 10.5) Communications Manager Express Voice Gateways (TDM, Analog), CUBE/SIP, H.323 Contact Centre Express (UCCX/IPCC Express) Scripting, Deployment and Custom Reporting with Historical Reporting Client (HRC) and Cisco Unified Intelligence Center (CUIC) Presence/Jabber, Unity (Voicemail, Unified Messaging) Cisco UCS and VMware Unified Attendant Consoles (CUBAC, CUDAC, CUEAC, Attendant Console Advanced/Standard, and ARC Premium) I also have extensive networking experience, as well as significant experience with Microsoft Windows Server/Exchange and associated technologies and products. I have development skills in Java, MS SQL and Informix and various other scripting and programming languages such as PowerShell. I have experience with many Cisco-specific APIs especially with UCCX and CUCM.

    $100.00 /hr
    219 hours
    5.00