Top Upwork Freelancers

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  1. Rameshwar Saran

    Rameshwar Saran

    Software Architect and Developer

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

    Recent Past Experiences: 40 Years experience as Software Architect with Phoenix Technologies Ltd., Software Architect with GuardianEdge - Symantec and Software Architect with TriCipher - VMWare, and TransAuth Inc. etc. Languages: Objective-C, Java, C, C++, C#, VB.NET, ASP.NET, VB, VBA, PHP, Perl, Python, SQL, Assembly, RealBASIC, Power Basic, HTML, CSS, JavaScript, AJAX, XML, WordPress, Flash ActionScript and more... Databases: MySQL, Microsoft SQL Server, Oracle, DB2, PostgreSQL. Platforms: Windows, OS X, Linux, Android, iOS Types of Programs: Desktop and Client-Server Applications, Systems and Windows Internals, Digital Signature Solutions, Identity and Access Management, Bluetooth and Wireless, Cryptography, USB and Smart Card Tokens, Web Applications, and Mobile Applications.

    $55.56 /hr
    373 hours
    5.00
  2. Manimaran M

    Manimaran M

    Ruby on Rails Expert

    India - Last active: 1 month ago - Tests: 1 - Portfolio: 8

    Over 9+ years of technical design, architecture and hands on experience in web application development. For the past 5 years, I’ve designed mid-size web & SaaS applications using a variety of languages, platforms and technologies. I have full command in Ruby on Rails, Rspec, Cucumber, Twitter bootstrap framework, Sass, Haml, Javascript, Coffeescript, jQuery, Stripe, Devise, MySQL, PostgreSQL etc. Earlier I also worked with mid to enterprise Java/J2EE framework. In the last 5 years I have been leading startup teams from end to end management of clients, projects, team management and hands on architecture using agile development approach. I’m very well versed with lean startup approach from proof of concept phase to launch phase. I value my time and my clients time and always delivery on time. I believe in open communication and can help entrepreneurs/startups to polish/refine, brain storm ideas. I am seeking opportunities to create applications for you/your company or help in enhacing/optimizing your existing application(s). I guarantee high quality work and on-time delivery.

    $27.78 /hr
    14 hours
    4.49
  3. Maciej Klepaczewski

    Maciej Klepaczewski

    Web Performance Optimization Engineer

    Poland - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    I specialize in Website Performance Optimization (WPO). In particular I do: * MySQL optimization, * PHP optimization, * HTML/JavaScript/CSS related optimizations. I can guarantee page loading times in range of 1-3 seconds or less. I also have experience in web scrapping and handling large amounts of data (where by big data I mean at least dozens of gigabytes). I have masters degree in Computer Science from Wroclaw Technical University. I'm experienced programmer with 15 years of experience (I coded my first software in high school).

    $80.00 /hr
    883 hours
    5.00
  4. Viktoria Barzashka

    Viktoria Barzashka

    Manual QA tester

    Bulgaria - Last active: 12 hours ago - Tests: 3 - Portfolio: 4

    In the last years I worked as a Junior QA supporting small teams and I have good experience testing websites of different types and levels of complexity. Experience with cross browser testing, functional and regression testing. A little experience with mobile testing, desktop applications and Selenium - still working on those. Comfortable with different tracking systems. Excellent knowledge of the Software QA principles and methodologies. I am constantly working on improving my skills and I am ready to take on any challenge.

    $10.00 /hr
    721 hours
    4.61
  5. Juan Bautista Cabral

    Juan Bautista Cabral

    Senior Python Programmer

    Argentina - Last active: 12 hours ago - Tests: 2 - Portfolio: 2

    Born in Argentina, working in python sice 2007. His main interest are: data mining, business intelligence and machine learning. I'm have my Mg Software Engineering degree from the Technological University in Argentina and my postgraduate degree in Statistics analysis from the National University of Córdoba. Actually I am PhD student and my research is about "machine learning and data mining for astrophysics database. The last 5 years i working as researcher in the UTN and we develop a new paradigm in analysis databases (http://getyatel.org) I work for many startups mainly in python an java always working i data analisis from diferent sources; probably this is the most interesting project of all is a plataform for create olap-cubes with videogames (http://playnfo.com sorry only in spanish)

    $30.00 /hr
    461 hours
    4.87
  6. Elizabeth Romero

    Elizabeth Romero

    Systems Engineer - Software Developer

    Colombia - Last active: 12 hours ago - Tests: 5 - Portfolio: 1

    Software developer with 5+ years of experience in analysis, design and development web aplications. Expert in developing web applications, windows services and web services in Microsoft Visual Studio 2012 using C# .Net, Framework 4.5 and SQL Server. - Proficient in Web Services, SOAP, XML, XSL, XSLT, CSS, HTML, AJAX and JavaScript. - Extensive experience in SQL Server Database design, Database maintenance, developing Transact-SQL Statements, stored procedures, using SQL Server 2008. - Experience using MS SQL Server Integration Services (SSIS) - Solid experience with Application Servers / Web containers such as: JBoss - - Server, Glassfish Server, IBM WAS, Apache Tomcat and Jetty. - Experience with Unix-like (Linux, UNIX, Solaris and AIX-IBM) and Windows-x. - Good working knowledge in UML, Design Patterns, MVC (Model-View Controller), Web-Services. - SOAP, XML, XSD and WSDL - Functional domain experience involves logistic, transport, import and export merchandise.

    $19.00 /hr
    2,767 hours
    5.00
  7. Maksim M.

    Maksim M.

    Software Engineer (C#/DotNet and Delphi)

    Ukraine - Last active: 1 day ago - Tests: 3 - Portfolio: 1

    I am an experienced software developer with over 8 years in the industry. Use to working in both a team and individual work environment under deadline constraints. High responsibility and capacity for self-development. SUMMARY: ✔ C# and DotNet Framework desktop application developing. ✔ Delphi and Firebird (Database Server) client-server application developing. ✔ Developing Delphi components, classes and DLL. ✔ Firebird (Database Server) architecture, administration, tuning and developing SP, UDF. ✔ Strong understanding of OOP principles and unit testing. ✔ Full software life cycle - design, development, testing and maintenance. ✔ Deep knowleadge of retail bussiness, financial reports (balance sheet, income statement) and ratios. TECHNICAL SKILLS Languages: Delphi/Pascal, C#. Basic knowledge of Java, C/C++, HTML/CSS, PHP, JavaScript. IDE: Delphi 5-7, 2005, 2006, 2009, 2010, XE3; MS Visual Studio 2005-2010; IBExpert 2007-2009; SharpDevelop 3, 4; NetBeans 6 (for Java 2ME); Eclipse 3 (for Java 2ME); Nokia Series 40 5th Edition SDK. Little experience in MS Visual Studio 6 (C++); LCC-Win32; Borland C++Builder 6. Databases: Firebird 1.5, 2.0, 2.5. Little experience in MySQL 4.0, 5.0; MS SQL Server 2005, 2008. Frameworks and technologies: DotNet 2.0, 3.5, 4.0; ASP 2.0, 3.5, 4.0; Java 2ME, JMUnit 1.2. NUnit 2.5. Little experience in DirectX 8, 9; OpenGL 2.0. Drupal 5; WordPress 3. Components: Microsoft Chart Controls, SourceGrid 4; NPOI 1.2.3; DtpDocuments 2.8; Graphics32 1.8.3; DevExpress Bars Suite 5 for Delphi; DevExpress Quantum Grid Suite 5 for Delphi; Alpha Controls 7-8; RX Library 2.7; TMS Component Pack 4; Tee Chart Pro 7; Jedi VCL for Delphi 3.45; EurekaLog 6-7. Operating systems: Microsoft Windows 98/XP/7. Little experience in Ubuntu 7. Software: Tortoise SVN 1.7; InnoSetup 5; Help and Manual 3.0; StarUML 5; DatabaseComparer 3.2. Macromedia HomeSite 5.5; TopStyle 3. Adobe Photoshop 7 - CS6; Paint.NET 3.5; 3DS Studio Max 6 - 2009; SolidWorks 2012. Knowledge of the most popular antiviruses, system utilities and etc. Hardware: Simens ES75 GSM modem (programming through COM-port using AT commands); CAS BW-150 digital scales (data reading through COM-port). Basic knowledge of the Intel/AMD compatible PC and its hardware parts, their setup and troubleshooting. Special skills: MS Word and MS Excel COM automation. RS-232 (COM-port) programming.

    $16.99 /hr
    2,285 hours
    5.00
  8. Igor K.

    Igor K.

    Expert C#, ASP.NET MVC, Angular Js Developer

    Russia - Last active: 12 hours ago - Tests: 2 - Portfolio: 4

    I have been developing using .net and c# for about 6 years, 4 of them in a team commercial development with .net 3.5-4.5, wcf, wpf, winforms, asp.net mvc3, mvc4, entity framework postgresql, mssql and more. Now I'm freelancing. My primary specialization is highload client-server applications, gis and transport monitoring systems and web mvc applications. But I have been involved in many other projects and I can and can work with any project related to .net.

    $20.00 /hr
    252 hours
    4.92
  9. Antonio Torres

    Antonio Torres

    MEAN STACK developer

    Poland - Last active: 3 days ago - Tests: 3 - Portfolio: 4

    I am a highly skilled web designer with many years of programming and working with a wide array of languages. I have worked with large corporations in the past with multiple programmers on the same team but have also work as a sole programmer. However I also love working with small companies and individual employers. I always aim to please. I stick to specifications and guidelines but also provide my own creativity and experience into a project. I have worked with many North American companies which has helped me grow my business skills as well. I am available 24/7 to my clients even during holidays. I learn on the job and currently have learned about software architecture and online media services. I take any work I do personal and always give good results to my clients. Very interested in working with you so that we can grow together!

    $33.33 /hr
    74 hours
    5.00
  10. Emil R.

    Emil R.

    Classic ASP WEB Developer

    Moldova - Last active: 1 day ago - Tests: 2 - Portfolio: 5

    Proficiency with HTML5, CSS3, JavaScript, JQuery, JqueryUI, ADO, ASP Classic, IIS, XML, VBS, MYSQL, MSSQL, JQueryMobile, DHTML, WEB Scraping (with Nodejs+Cheerio, VBS), Highcharts Familiar with Nodejs, Express, EJS I have been for 17 years in the computer field. I have been programming and developing for 15 years using Foxpro (SQL) and 8 years ASP Classic programming language. I am experienced in every phase of the development cycle. I have developed inventory, survey, financial, direct mailing, billing, client-server, user defined reporting systems, and some web development. I have written specifications for most of my projects and created user and technical manuals for each one. I have provided customer support and training for all projects and performed maintenance and normalization of databases for each project. I can also adjust myself in any programming platform.

    Groups: LoginRadius

    $16.00 /hr
    432 hours
    4.67