Top Upwork Freelancers

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  1. Ali Balcı

    Ali Balcı

    Software Engineer

    Turkey - Last active: 30 days ago - Tests: 1

    I have developed a wide range of websites using ASP.NET, MVC, Web API, Web Services. Programming Languages: C#, JavaScript, JQuery Databases: Microsoft SQL Server, ElasticSearch, Redis OS Platforms: Microsoft Windows Concepts and technologies: .Net 3.5/4.5,OOP,OOD,f,Linq, .Net Extensions, Markup languages: Xhtml/Html, Xml, JSON, Css Web Servers: IIS 5-6/7 (Internet information server) Design Patterns: Singleton, Factory, Repository, Façade, Model, Unit of Work. ORM: ADO.Net, Entity Model, NHibernate,Plinqo. Highest priority given to quality and in time delivery. Used tecnologies and tools CVS(SVN) management, Twitter Bootstrap, Git, GitExtensions, SourceTree, Team Foundation Server I am particularly interested in long term collaborations with clever & fair customers concerned with quality software development

    $22.22 /hr
    7 hours
    5.00
  2. Oleksii S.

    Oleksii S.

    Experienced Software Engineer

    Ukraine - Last active: 1 day ago - Tests: 4

    I am a software engineer with 12+ years of experience. Wore many hats in my professional life, developed software in many languages, some of those are: Java, C#, Visual Basic (6 and .NET), Javascript, HTML/CSS, PHP. My primary focus now is C# & HTML/CSS/Javascript. Quick learner, adore unusual and interesting tasks.

    $44.44 /hr
    5 hours
    4.88
  3. Amro Hasan

    Amro Hasan

    Augmented Reality Game Developer

    Egypt - Last active: 1 month ago - Tests: 6 - Portfolio: 12

    Professional game designer/developer worked as a technical director in a Game/Augmented reality development domain. I use Unity 3D engine to rapidly create your project with excellent quality and fast time to market projects. I am specialized in utilizing Augmented Reality using Vuforia to create a strong gaming experience for your clients.

    $20.00 /hr
    0 hours
    5.00
  4. Mladen Stevanovic

    Mladen Stevanovic

    Web developer

    Bosnia and Herzegovina - Last active: 7 days ago - Tests: 3 - Portfolio: 6

    I have M. Sc degree in information Technology(Software engineering). I have passion for code writing. I was developing web games and web sites. In the last months i specialized Google maps api. I am looking forward to exciting tasks. I prefer using Javascript, HTML5, PHP, mySql and actionscript/Flash to make functional web sites, games and other products.

    $14.32 /hr
    10 hours
    5.00
  5. Stanislav Kotov

    Stanislav Kotov

    Network System Engineer/System Administrator - FreeBSD/Linux/Solaris

    Russia - Last active: 20 days ago - Tests: 7

    I am Senior network engineer/Architect searching job at free time (usually few hours/day). Now i am working at Cisco/Juniper Partner in System Integration Company. I have built projects for ISP: IP and/or IP/MPLS networks from small provider (up to 700 users, pure IP/L2) to nationwide backbone and broadband networks (IP/MPLS Core with BGP and complex TE, B-RAs). All the MPLS services: Internet, L3VPN, VPLS, L2VPN, mVPN; including InterAS and CsC cases. Participate on all project stages from presale (equipment choose and design) to implementation and documenting, and further high-level support for networks, usually remote. I know in detail and have big practice of various network technologies: Routing: BGP, OSPF, EIGRP, ISIS, LDP, RSVP TE, NAT (all cases) VPN: MPLS VPN, GRE (PPTP, DMVPN), IPSEC Security: Firewall - Cisco PIX/ASA, Juniper SRX access-lists/filters - CBAC/ZBF QoS: can develop and deploy you traffic classes, implement marking and queuing and shaping, policies and your needs, including multi-color policers. Deploying different main and complementary services for ISP on UNIX/Linux/Solaris/Windows platforms, including virtualized ones: DHCP, DNS, Radius, Tacacs+, Mail, HTTP servers, SNMP, j/netflow collecting, integration with billing systems, MySQL and other. Big experience in automation: building different monitoring, configuration, self-healing scripts also for large amount of devices using multitasking. Bash, Perl scripting Have big experience in Cisco/Juniper product line from small routers to top line (CRS/TX Matrix). Also know and have practice of using many network hardware vendors (Extreme/Foundry/Dlink/Zyxel/Huawei). Programming experience: Perl (many scripting mainly on UNIX), PHP (made full project for university for student contract system, using MySQL, Javascript also), Shell scripting - bash, awk, sed, beginning to learn Python, C/C++ - some small application and system programming, MFC (Microsoft Foundation Classes), can easily modify program code. Also have experience in Windows administration AD deploying till W2003. Huge experience of user support. The rate can be lower if project topic is interesting for me but i don't have corresponding experience for it. I am taking full responsibility of my work. Have strong tradition to make documentation on my work. If you have big projects, which requires presence in the site we can discuss it.

    $56.00 /hr
    8 hours
    4.82
  6. Dillan Butler

    Dillan Butler

    Software engineer

    United States - Last active: 1 month ago - Tests: 7 - Portfolio: 1

    Over the last few years I have worked for a startup, a large company and a research project all in the field of software engineering. I have worked with .net, html, PHP, javascript as well as MySQL. My core copentence lies in back end architecture, working with server side communication, mathematical algorithms and software QA. I am seeking opportunities to further my experience with QA or server side development. I also have experience with game development, Agile softare programming, OOP and JSON.

    $26.00 /hr
    1 hours
    4.85
  7. Szabolcs S.

    Szabolcs S.

    VoIP specialist and Linux guru

    Romania - Last active: 15 hours ago - Tests: 1 - Portfolio: 2

    Over the last 10 years I have managed a wide range of IT projects and provider grade infrastructures, including VoIP platforms, VPNs, Linux servers, firewalls. My main profile is Linux servers and building VoIP platforms with opensource components as Opensips, Asterisk, MySQL, Radius, CDRTool, Mediaproxy, RTPProxy. I also have experience in KVM virtualization, Cacti and Nagios monitoring.

    $15.00 /hr
    0 hours
    5.00
  8. Hemant S.

    Hemant S.

    Mobile Application Developer with more than 5 Years of experience

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

    I have over 5 years experiences in developing iPhone / Android applications and have more than 75 applications published on Apple App Store and Google Play Store. Below are my areas of expertise: - Enterprise Apps. - Apple iWatch Apps. - Extensions. - Puzzles Apps. - Quiz Apps. - Social Networking Apps. - Health and Fitness Apps. - Kids, Education Apps and books. - Hotel and Restaurants Apps. - Finance and law Apps. - Medical Apps. - Navigation Apps. - Catalogue Apps. - Podcast Apps. - Newsstand Apps. Services: provide services in all the areas of mobile app development but below are some recently provided services by me: - Swift. - Algorithm implementation. - Push Notification integration. - GPS Services (Google Map SDK, Apple's Native Map, Google Map API, Foursquare API, Bingo API). - In- App purchase. - Web services implementation(REST and SOAP). - XML and Json parsing. - Sqlite Database. - iTunes Account management (account creation, bank and tax details, app management on store including creation of app and deployment). - App store submission. - Facebook, Twitter, LinkedIn, Google+, Tumblr, Instagram, Yahoo, FourSquare API implementation. - Mockups, Wireframes, App architecture. - Prototype. - Image Processing. - Cloud(Clouddrive, Dropbox, Box and SkyDrive etc.) integration - Video/Audio Streaming. - Mobile Device Management for all platforms - Ad and analytics services such as admob, revmob, inmobi, Chartboost, Applovin, google analytics, mix panel, crashlytics, flurry etc. - QR Code & Bar Code by ZXing, RedLaser and others. - Animations (core animations, UIDyamincs.)

    $17.00 /hr
    6 hours
    4.72
  9. Ivan K.

    Ivan K. Agency Contractor

    Senior Coldfusion Developer, Dev Team Leader

    Russia - Last active: 1 day 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
    8,677 hours
    5.00
  10. Vitaliy Ivanov

    Vitaliy Ivanov Agency Contractor

    Mobile Applications Developer (iOS and Android)

    Ukraine - Last active: 1 day ago - Tests: 2 - Portfolio: 12

    I have been developing apps for iOS since 2008 and for Android since 2010. I am passionate about what I do. I have a good knowledge of networks and web. Experienced in building games and applications that actively use network and social web integration. Familiar with OpenGL ES. In past I had experience with .NET platform, DirectX, Linux OS and Qt library.

    Associated with: Factorial Complexity

    $28.00 /hr
    260 hours
    4.91