Top Upwork Freelancers

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  1. Ivan K.

    Ivan K. Agency Contractor

    Senior Coldfusion Developer, Dev Team Leader

    Russia - Last active: 3 days ago - Tests: 4 - Portfolio: 16

    I have 13 years experience in software development. Coldfusion is my primary area of expertise. I am focused on web application development. Here is a list of my most recent and current work: 1. Developed Hackers trap subsystem. I came up with the algorithm to protect web applications from hackers. 2. Help reduce the cost of application maintenance. There are a lot of applications with bad code quality. It leads to a lot of defects while maintenance + clients over pay for adding new functionality. I rewrote a lot of applications with clear architecture, design and code reduce the cost of application maintenance. 3. Help improve web applications performance (page loading): code optimization, sql queries optimization, changing of settings in Coldfusion Administration and MS SQL, hardware upgrades. 4. Integrated eCommerce web applications with Amazom (AWS) to upload products to Amazon, receive orders and so on. Products like Gold Rings, Stones, Candles, Clothing. 5. Integrated eCommerce web apps with eBay to upload products to eBay, receive orders, etc. 6. Integrated eCommerce web apps with payment systems like Paypal (including credit cards via Paypal), Secure Trading, SagePay, Pay4Later 7. Developed mobile version of websites using Jquery Mobile or flexible version with Bootstrap. 8. Integrated schema.org into products page for eCommerce web apps 9. Resolved issues with indexing of pages and images on Google 10. Installed and configured Coldfusion 11/IIS 8 on Win 2012 by using Coldfusion 11 Lockdown guide (Secure Installation) My previous work experience includes working with Luxoft and Gehtsoft Companies. Developed and managed applications for Boeing and FXCM companies. - 4 years in project management (up to 25 specialists in my team: analysts, developers, architects, testers); - 6 years in developers team management (up to 15 specialists in team: developers and architects); - 6 years in code development. About 40 projects with content hours from 1000 to 10000 were successfully completed. I have an advanced knowledge in SDLC (Macroscope P+ methodology). Participated in preparing projects for CMMI auditing. I provide the following services: 1. Project schedule development 2. Risk management 3. Operative team management 4. Budget management 5. Requirements development 6. Architecture and design development 7. Code development 8. Test design development and testing 9. User guide development 10. Deployment documentation development

    Associated with: Handsoft

    $55.00 /hr
    8,682 hours
    5.00
  2. Anton V.

    Anton V. Agency Contractor

    ASP.NET,ASP.NET MVC,SilverLight,C#,VB.NET,MS SQL Senior developer

    Russia - Last active: 10 days ago - Tests: 3

    I have 6+ years experience in developing desktop and web applications using ASP.NET C#, VB.NET, PHP. I use MS SQL Server 2000-2008, MySQL as a DBMS. Also I have strong skills in OOP, SQL, AJAX, JQuery. In my work I constantly use unit testing, test driven development, refactoring and agile methodologies. I always do my best, to feel proud for every application I develop.

    Groups: Application Developers Alliance, MailChimp Experts Group

    Associated with: RuNet

    $27.50 /hr
    11,630 hours
    4.88
  3. Natali B.

    Natali B. Agency Contractor

    android-developer, web-developer

    Russia - Last active: 16 hours ago - Tests: 5 - Portfolio: 1

    I'm certified magento developer with 5 years experience. Also, I have an interest and experience in the following directions of development: 1.Web development. Here I have an experience of developing with next technologies : PHP, Zend, Magento, Twitter Bootstrap, jQuery, SCSS, Twig,Zurb Foundation, BEM (Yandex), Nginx, Comet, PostgreSQL. 2.Android development. Here I have an experience in development mobile versions web-sites and applications. 3.Also, I have an experience in the development programs for mathematical research: this is Viterbi decoder with using C and program to identify human handwriting with using Java.

    Associated with: Rendered Source Agency, Rendered Source RU

    $22.22 /hr
    1,161 hours
    4.98
  4. Allan Vo

    Allan Vo Agency Contractor

    Senior Android/iOS Developer

    Vietnam - Last active: 1 month ago

    ********Your work - our success******* I'm a senior developer with 3+ years of experiences in developing apps on iOS and Android. I have created lots of apps with high quality and affordable price. Over the past 3 years, I have satisfied all of my clients when making their ideas come to life with really good apps. At present, my core interest is to develop apps on iOS and Android platform. I am very proficient in objective-c, java, android-sdk, web-services, iphone-development, android-development, sqlite, jquery-mobile, html5, ipad, amazon-web-services, cocoa, cocos2d, apple-xcode, eclipse, php… Also designing is one of my strengths, I will bring to you apps with modern, attractive, simple, and easy to use interface. I'm very friendly, straightforward, honest, cheerful, hard working and very easy to work with. I am looking for long-term relationship with clients, come and work with me to find out that I am your excellent partner.

    Associated with: Quality Time Software

    $15.00 /hr
    1,025 hours
    4.97
  5. Stanislav Shramko

    Stanislav Shramko Agency Contractor

    Linux admin / Backend developer (17 years of experience)

    Bulgaria - Last active: 3 days ago - Tests: 16 - Portfolio: 9

    To describe myself using eight words: I am a problem solver with extensive experience. As a Linux server administrator (since 2009), I configured and partly now maintaining servers for wm4d.com, datamojo.com, call2ru.com, serviskart.ru and other companies (more than 20 servers including VPSes). Also, I consult clients and colleagues on a wide range of questions related to web development and system administration. Since 1998 till 2009 I used to work as a programmer, participated in a variety of projects including Plesk for Linux. (So, I dealt with PHP3/4/5, Perl, bash, Java (J2EE), Pascal, C, JS; I know design patterns, test-driven development, agile methodologies and so on, and so forth.) During the summer of 2011 I took part in selection of the staff for one company (testing candidates' knowledge of PHP5, OOP, MySQL et cetera; more than 1000 candidates). If you need to develop a UI part (JavaScript/HTML/CSS), I am not the right person. And despite the fact that I know PHP I don't want to use it anymore. Now I am learning Python and Ruby.

    Associated with: Dinexi Services

    $33.33 /hr
    3,423 hours
    4.98
  6. Olga Korokhina

    Olga Korokhina Agency Contractor

    J2EE/Flex/Air/iOS/Android developer with great experience

    Germany - Last active: 16 hours ago - Tests: 11 - Portfolio: 10

    About 15 years in software development, experience of work in an extra small and really huge companies on a wide range of projects involving variety of technologies and development methodologies. Experience of running my own company (a5.ua) and work under different titles for several employers. Driven, passionate and crazy productive. And yes, modest :)

    Associated with: a5.ua

    $33.33 /hr
    4,361 hours
    4.48
  7. Maciej Zubala

    Maciej Zubala Agency Contractor

    Senior Ruby On Rails developer

    Poland - Last active: 6 days ago - Tests: 4 - Portfolio: 6

    Software development is not only my profession but also my greatest passion and hobby. This is why I spend majority of my free time improving my programming skills, learning new concepts, technologies, languages and tools. I get the greatest satisfaction when products I develop are released to the world and people start using it - that makes me want to spend more time at work. When not in front of my monitor, I'm probably taking care of my daughter or doing some sports (tennis and swimming most of the time).

    Groups: Upwork Verified Developers

    Associated with: Rocket Mind Software

    $38.89 /hr
    5,490 hours
    4.61
  8. Muhammad Waris Ali

    Muhammad Waris Ali Agency Contractor

    Senior iPhone/iPad Developer

    Pakistan - Last active: 21 days ago - Tests: 6 - Portfolio: 12

    Worried about your application being made in the right time with the right lines of codes??? Well, you are at the right place. With 4 years of experience in iphone development, I can produce fully working apps in considerably short amount of time. And with 5 years of experience in graphic designing, I will make sure you need not to go somewhere else for changing / creation of the UIs and mockupS!!!!

    Associated with: 999Studios

    $20.00 /hr
    1,893 hours
    4.92
  9. Asif S.

    Asif S. Agency Contractor

    iOS, Android, Blackberry, Microsoft Tech. (All in One) Developer

    Pakistan - Last active: 4 days ago - Tests: 8 - Portfolio: 37

    I am a friendly, outgoing programmer who loves working with clients who have a goal in mind and need me to achieve it. I have a strong work ethic, excellent communication (with fast response times) and a dedication to completing a project to the satisfaction of my client. Please contact me to experience my friendly, helpful nature. Ever ready to face challenges, very much motivated, enthusiastic, and ambitious for working in a high paced environment. Capable of taking multiple tasks. Possess a disciplined, professional and quality centered approach with strong analytical and problem solving skills and able to work under pressure and in a dynamic cross-functional, cross-borders and cross-cultural environment.

    Groups: Application Developers Alliance, Microsoft Certified Professionals

    Associated with: EasySoftTech Agency

    $27.78 /hr
    7,994 hours
    4.83
  10. kavitha pagoti

    kavitha pagoti Agency Contractor

    QA Engineer/Tester, 3000+ Hrs on odesk

    India - Last active: 1 day ago - Tests: 3 - Portfolio: 2

    I have opted software testing as my career not because I got opportunity to work but I am in software testing because I believe Software Testing as "Destructive Creation" and I enjoy finding issues by hook or by crook. I am not only a tester who can do just some testing work and report issues, I can also help you in process initiation, automation tool selection, resource hiring, QA documentation such as help documents, test plan, knowledge transfer doc, training material. I have worked on application based on several domain and technology such as Healthcare, e-commerce, e-learning. "Has a attitude of 'test to break", "diplomatic attitude when communicating with co-workers and developer", "Ability to think as end user/customer perspective", " Judgment skills are needed to assess high-risk areas first" and last but not the least "A strong desire for quality, and an attention to detail." are the qualities of good software tester. So if you are looking for above abilities and qualifications then I can ensure you that I best fit in to your alley

    Associated with: The Measurers

    $11.11 /hr
    4,008 hours
    5.00