Top Upwork Freelancers

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  1. Mateusz Lisik

    Mateusz Lisik Agency Contractor

    Software Engineer

    Poland - Tests: 2 - Portfolio: 1

    Experienced Software Engineer. Throughout my career I've developed numerous websites and browser-based dedicated systems. My strongest skills are these web-development related but I'm also experienced in iOS app development. I major in: * PHP * MySQL * HTML(5) * CSS(3) * JavaScript * ExtJS Framework * Objective-C (CocoaFramework) * Java for Web (Play2 Framework) As for many developers, programming is my passion, so I'm constantly learning new technologies and mastering these that I’ve known. I'm currently fascinated with Mobile Applications development.

    Associated with: Lisik.IT

    $33.00 /hr
    745 hours
    5.00
  2. 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
  3. 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
    38 hours
    5.00
  4. Amitabh R.

    Amitabh R. Agency Contractor

    Web application architect

    India - Tests: 2 - Portfolio: 1

    I am a web application consultant specializing in developing critical and practical web applications for both established businesses and startups. I have extensive experience in programming in PHP frameworks like YII, CakePHP, Symfony and Codeigniter. I have been developing SAAS application for startups and also have extensive experience in taking over an existing web application , run various audits on it and maintain them for the owner. My main application domains are: -> Application for real estate and mortgage companies -> building CRM for companies -> Financial and statistical applications interfacing with R -> Creating MVP (Minimal Viable Product) for startups -> Real time web applications for stock markets -> Real time geo-location application -> Background check systems -> Social media application based on twitter, facebook, youtube etc APIS. I am very good at understanding and deciphering complex business logic and solve them programatically. I also have very good knowledge of algorithms. I have extensive experience in handling large MYSQL database with high volume traffic. I can write optimized sql queries and can audit sql queries to fix slow running queries. I have practical and in-depth knowledge about code quality, various testing (unit testing, security testing, stress testing). I am very comfortable in setting up full stack application on bare-bone servers. I am also very comfortable working on terminal. I have extensive experience in working in remote team and leading multi-member teams and managing source code through assembla and Bit Bucket. I am comfortable at working in both supervised and unsupervised environment. Below are some area I have gained expertise over the years ********************************************************************** Programming Languages: PHP, Python, Javascript, Node.js, R language Version management : SVN, Git Web servers: Apache, Lighthttpd Relational database : MYSQL, PostGresql Nosql databases : Mongodb PHP frameworks : YII, CakePHP, Symfony2, Codeigniter Javascript frameworks : Jquery, express.js, knockout.js, backbone.js Open source application : Wordpress, Joomla, Open cart Debugging : XDebug, KcacheGrind, Fiddler, Wireshark Job queue: Beanstalkd Caching : APC, file based caching Testing Tools : Manual and automated testing using PhpUnit, Apache Jmeter, Load UI, Rapid7, Burp suite. We cover Functional, Security, Stress, Compatibility and Usability testing Design tools : MYSQL workbench, Freemind, Visio, Pencil Internet protocols : HTTP, TCP/IP, SSL/TLS, POP3, IMAP Third Party APIs: Amazon, Facebook, Twitter, LinkedIn, Google +, Google Maps, Flickr Server management : Ability to setup barebone servers. Comfortable with Linux terminal. Use Cpanel, Plesk and Zpanel Payment gateways : Paypal, Stripe, Authorize.net, Google checkout, Amazon payment, Zombaio Technologies : AWS, Ajax , REST, OAuth2, Design patterns, JSON, Web-Services/SOAP, HTML/XHTML, CSS, Smarty, PEAR, Composer Background check and Drug testing API : NationalBackgroundData, RapidCount, TradeHouseData, BackGroundChecks.com, Labcorp, Escreen

    Associated with: Codelogicx Technologies Private Limited, FinArb Analytics Consulting

    $22.00 /hr
    690 hours
    5.00
  5. Sergii P.

    Sergii P. Agency Contractor

    ObjC / NodeJS / PHP / jQuery / JavaScript / AJAX / HTML / CSS / MySQL

    Ukraine - Tests: 10 - Portfolio: 5

    I've been working as a lead developer for 6 years. Have strong skills in all modern web technologies - top 10% in all corresponding oDesk tests. Looking for challenging long-term contracts. If required, can bring my colleague in (who's just as good as I am).Understand critical deadlines and specialize in saving employers' ****s (I mean reputations).

    Associated with: AppsHubX Agency

    $55.56 /hr
    6,729 hours
    4.95
  6. Stephen F.

    Stephen F. Agency Contractor

    Senior Software Engineer/Database Engineer/Project Manager

    Canada - Tests: 14 - Portfolio: 12

    Software Engineer, Database Engineer, and Linux Administrator. I'm always seeking exciting new opportunities, particularly working with modern web applications. I have 16 years experience in software development, working with a number of technologies such as: Node.js / AngularJS / PHP / MySQL / Cassandra / MongoDB / Oracle / Java / Android / C/C++ / Objective C / Laravel / CakePHP / .Net and more... I'm a firm believer in agile development, TDD/BDD, and following best practices. I also have a wealth of experience managing and deploying high-availability server clusters, and developing scale-out ready web applications on Red Hat, CentOS, & Ubuntu servers. I specialize in SaaS based applications deployed on cloud platforms like Amazon Web Services, Rackspace Cloud, and Google Cloud. I can also assist you in deploying devops, continuous integration (Bamboo, Jenkins, TravisCI, etc), continuous deployment, and other automations.

    Associated with: Kupo Web Services LTD.

    $56.67 /hr
    3,849 hours
    4.98
  7. Alejandro Giraldo

    Alejandro Giraldo Agency Contractor

    CSS/jQuery/PHP/Joomla/Facebook/Wordpress/Drupal/Linux/CodeIgniter

    Colombia - Tests: 1 - Portfolio: 8

    As a blogger and code lover I have tested and worked with a big and biggest CMS like wordpress, drpal , joomla , magento, and many others, taking the first one as part of my big portfolio and experiencie as u can corroborate with my experiencie. CSS/HTML/jQuery are part of my daily work and mixing this knowledge with wordpress and PHP, I am dispossed to create almost any challenge that client put to me and becoming it in a good product. Would be awesome to meet u and make a team to create very awesome things.

    Associated with: Permalink

    $44.44 /hr
    1,084 hours
    4.96
  8. Konstantin S.

    Konstantin S. Agency Contractor

    bug free software development, fine art and illustration

    United States - Tests: 7 - Portfolio: 5

    I am a software design engineer with extensive experience in design and implementation of desktop and web applications. During my career I have worked with many different technologies, both proprietary and open source. Most importantly, I know how to write code that has a solid theoretical foundation. If your project requires high quality, "bullet-proof" code, I can help you. I am also a fine artist and I would be very much interested to get involved in to an illustration project or a computer animation project, in particular, HTML5 canvas animation. If you would like to hire me for a fixed-price job, please make the job hourly and set the job's limit on hours to be equivalent to the value of your fixed price.

    Associated with: k design

    $66.67 /hr
    2,368 hours
    4.99
  9. Nicolas R.

    Nicolas R. Agency Contractor

    Web developper

    France - Tests: 8

    I am a web developer for six years and I am searching for a long-term web projects. I graduated from the Rennes university (France) with a Bachelor's degree in translation (french, english, spanish and german) in 2008. I also graduated in web development and Internet Technology in 2009 (bachelor) and 2011 (Master's degree). I have worked on many web projects using the following technologies and languages: PHP, WordPress, HTML5, CSS3, jQuery, Zend2, Android, Ajax, Responsive design : Bootstrap/Less, etc. I have also worked for two years in a Wordpress team as a lead web developper and I master Wordpress development (themes, plugins, custom functions, widgets). I am available for full-time projects. Contact me if you are interested in teaming up with me.

    Associated with: Virtual Translation Solutions

    $20.00 /hr
    469 hours
    5.00
  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