Top Upwork Freelancers

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  1. Victor Vlasenko

    Victor Vlasenko Agency Contractor

    Founder and Senior Developer at SysGears

    Ukraine - Tests: 4

    A senior developer with over 12 years of experience, focused on creating complex Java/Scala solutions. Especially efficient at software optimization and implementation of high performance computing systems. Fully dedicated to product quality, beauty of architecture and performance of the code. Technical Proficiencies: - Languages: Java, Scala, Groovy, JavaScript - Web Frameworks: Grails, Play 2, AngularJS - Frameworks: Akka, Spray, ZooKeeper - Databases: MongoDB, MySQL, H2

    Associated with: SysGears

    $30.00 /hr
    1,807 hours
    4.92
  2. Rimma M.

    Rimma M. Agency Contractor

    Senior QA Engineer

    Ukraine - Tests: 1 - Portfolio: 3

    I have strong understanding of software development life cycle and Quality Assurance. I have strong analytical skills and strong knowledge in software testing principles and methodologies. I am resolute, full of energy and initiatives, communicative, reliable and very responsible person. I have experience in automated testing of web and mobile applications using automated testing tools such as Selenium WebDriver, Selenium Remote Control, Automated QA TestComplete, Ranorex, UIAutomation.

    Associated with: TestMatick

    $8.00 /hr
    42 hours
    5.00
  3. Andrey K.

    Andrey K. Agency Contractor

    Pro iOS Developer

    Russia - Tests: 2 - Portfolio: 5

    More than 5 years experience in native iOS applications development using latest Apple technologies, great number of successfully completed projects including my own apps. Experience in big and complex projects for well known customers. Ability to work as a part of a big team or alone. Key knowledges: Software Architect, Design Patterns, iOS SDK, xCode, Team-Leading, Multithreaded Application Development, MVC. SWIFT: Largest experience and understanding of the modern Apple programming-language: closures, functions, optionals, structs, enums, control flow, pattern matching, data modelling, GCD, extensions Apple xCode 3-6: "Instruments" for testing: leaks, allocations, CoreData tool, Time profiler, Performance tool, Zombies, File Activity etc. C/OBJECTIVE-C: Strong Objective-C skills, modern style (GCD, ARC, blocks programming, object literals etc.). Apple’s code documentation: UI & AppStore guidelines, iOS 7 UI/UX guidelines. Memory Management, protocols, categories etc. COCOA/COCOA TOUCH FRAMEWORKS: UIKit, Foundation, CoreGraphics, CoreAnimation, CoreImage, CoreLocation, CoreMotion, AVFoundation, GameKit, MapKit, Social, CoreData, StoreKit, QuartzCore, Accounts, AudioToolbox, SDWebImage, AddressBookUI, CoreMedia, CoreVideo, MessageUI, CoreText, EventKit, SpriteKit, CloudKit and others. DATABASES: SQLite (mobile, powered by CoreData.framework), Data Modeling, Multithreaded DB management. I have the strong iOS development skills with more than 5 years experience and a large number of completed and published projects including my own products. I know how to create any custom iOS applications from the beginning till the AppStore release. KEY SKILLS: - ability to start and finish any project (have a lot of my own AppStore projects) - build easily supported, workable and stable project architecture - make UX the most user-friendly and unlocked with multithreading - pixel perfect Interface Building works - Data Modeling and DataBase management in multithreaded environment - ability to apply any kind of iOS animation  I love to produce a great products for people.

    Associated with: KickApps

    $33.33 /hr
    100 hours
    5.00
  4. Valentin Poroxnenko

    Valentin Poroxnenko Agency Contractor

    senior Java/Androi developer (EJB, JPA,JSP,GWT,Portlets, Eclipse)

    Russia - Tests: 11 - Portfolio: 4

      I have been working as a key developer and team lead at the java or android projects for more than 6 years. Most of these projects were enterprise applications. Team leading and project management experience. Good knowledge of team working rules and tools (version control, bugtracking, time management systems, etc.) Development  of multi-tier applications based on JBoss, Weblogic, WebSphere, Tomcat application/web servers. EJB 2, EJB3, servlets, Web services(SOAP, REST, axis2) using for middle tier. AJAX(GWT, JSF with IceFaces), JSP as view tier. Hibernate and JPA ORM at the MySQL, Firebird,Oracle db's. Good design patterns knowlege GoF, Java EE patterns etc. Exam leader and first contributor at the Eclipse RCP exam at the JavaBlackBelt - Java Certification Community ( http://knowledgeblackbelt.com/ ). Brown belt, userID http://knowledgeblackbelt.com/UserView.wwa?userId=148936#!User/vporoxnenko

    Associated with: NevaSpecInSoftConsult

    $30.00 /hr
    1,154 hours
    4.55
  5. Pavlo H.

    Pavlo H. Agency Contractor

    Professional .NET developer ASP.NET, MVC, EF, SQL, JS

    Ukraine - Tests: 3

    Specialist in the field of IT technologies with 8+ years experience. A Software Developer with over 5 yrs commercial experience in the web/internet area primarily with ASP.NET and SQL Server. 3 yrs - DeskTop application. Within this area has successfully completed a number of different commercial projects. As a result of working on a variety of projects both within a team and individually using emerging technologies such as .NET 2.0/3.5/4.0/4.5 has the necessary skills and experience to work in areas of web/internet development. • Good insight into design patterns and designing applications using an OOPS • Experience of developing business applications using in C#/VB, . Net ramework, ASP.NET, ASP.NET MVC, Web Api, WPF, WCF, ADO.NET, LINQ, EF, AJAX, JavaScripts • Experienced working with Git, Perforce SVN, TFS • SQL programming experience, wrote back-end Procedures, Functions, Triggers and query optimization techniques • Experience in implementing reporting using Crystal and Microsoft Reports • Experience integrating open source tools and libraries in the .NET application project • Experience in front-end level: AngularJs, jQuery

    Associated with: SmartApes

    $30.00 /hr
    1,655 hours
    5.00
  6. Alex Momotyuk

    Alex Momotyuk Agency Contractor

    Senior Android Developer

    Belarus - Tests: 1 - Portfolio: 2

    I am an android mobile developer with 3+ years' experience. Last time I focused on developing full stack mobile projects for Android. I have a wide range of experiences in software development using Java, C++. I am able to provide full life cycle of software engineering right from requirements gathering, design (if needed), prototype, development, testing, publishing and maintenance. I am an highly effective and reliable person able to meet the job requirements and agreed deadlines. In mid and long-term projects I like to follow TDD, version control, code reviews and other good agile practices to provide excellent results in time and build continuous and productive communication.

    Associated with: Panda Systems

    $25.00 /hr
    509 hours
    5.00
  7. Alexey Shestakov

    Alexey Shestakov Agency Contractor

    Senior Programmer/Developer

    Russia

    I'm passionate about games application. I have been successfully developing MMO FPS "stalker-online" for more than last year from the start of project. I'm working on all of basic mechanics and tools to create interesting game process and productive work of game designers. Also i have a more than 6 years experience in network administration, that allows me to create network stable code. More than wich, i have a small experience in game design to help designers create an interesting mechanics. I'm experienced in C#, Python and familiar with BigWorld Engine and Unity.

    Associated with: PyPie

    $20.00 /hr
    1,354 hours
    4.85
  8. Aldo P.

    Aldo P. Agency Contractor

    Web Developer (PHP,Joomla,Wordpress,Drupal,Django,jQuery) -

    Indonesia - Tests: 20 - Portfolio: 9

    I have more than 6 years experiences of web programming including PHP, MySql, HTML, jQuery, CSS and Python. My core competency lies in creating Joomla components and modules, Wordpress plugin, Drupal modules and custom PHP applications. I also have some experience in the following areas: Android, Linux, DNS management and unit testing.

    Associated with: Lurustcansoft

    $14.00 /hr
    4,038 hours
    4.99
  9. Angeloluca B.

    Angeloluca B. Agency Contractor

    Google Apps Script / Node.js / Javascript Development

    Italy - Tests: 3 - Portfolio: 6

    I like to understand, question and solve problems. I especially focus on building integration and automation tools, whatever can help people and systems to collaborate and behave smartly. I especially focus on Javascript, Node.js, Google Apps Script flexibility and Google App Engine powerful capabilities, but Python and Java are good friends too. I have developed a wide range of dashboard, automation and mining tools for startup companies and businesses exploiting the smartness and power of these tools. I built an extensive experience in data mining, recovery and automated analysis for business intelligence and bioinformatics. (2 years) - Cloud Development & Web Collaboration : Google Apps Script , Javascript, Node.js, Google Clous Products - Software Development : C/C++, JAVA, C#, PHP - Data Mining : Excel, Extraction & Recovery,Database MySQL/Oracle PHP/PERL/Python for scripting and Web Applications(3 years) JAVA/C# enterprise development for Web Services, SOA and Integration (4 year of practice) C++ distributed and network software development (3 year of practice) C++ network management development (2 year of practice) C++ system programming and low-level coding (2 year of practice)

    Groups: Crossrider

    Associated with: Web HQ

    $50.00 /hr
    703 hours
    4.98
  10. Andrey Chorniy

    Andrey Chorniy Agency Contractor

    Senior Java (JEE and Android) Developer

    Ukraine - Tests: 3 - Portfolio: 7

    During my 11 years experience I've worked with a lot of java technologies and frameworks, performed a lot of refactorings and system re-deisgns and application performance tuning. My latest experience include application development for Android platform and web-applications with Java/Jboss-Seam/JSF/Hibernate/Spring. System integration with CMS systems like Alfresco, Artesia (OpenText) I have strong background in application performance tuning. Follow the best OOP principles and Design-Patterns. I also have an experience in developing information retrieval systems, datamining, textmining, evolutionary/genetic algorithms. I'm looking for challenging Java/JEE/Android projects.

    Groups: Android, Sun Certified Professionals

    Associated with: Texus

    $30.00 /hr
    2,888 hours
    4.83