Top Upwork Freelancers

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  1. Dzmitry Sapezhka

    Dzmitry Sapezhka

    liferay, java developer

    Belarus - Tests: 2

    I'm involved in software development during last 9 years. I have good abilities and I'm looking for Java and Android projects. Skills: Java (Spring, Spring Web MVC, Lucene, Compass, Struts, GWT, JPA, Hibernate, Toplink, JAXP, Castor, Ant, Maven), Java EE (EJB, JSP, Servlets, JMS), RDBMS (PostgreSQL,MySQL, Oracle), (X)HTML/CSS/Javascript, XML/XSLT/XPath, PHP, GNU/Linux

    $33.33 /hr
    24 hours
    4.41
  2. Roman Dubyk

    Roman Dubyk

    C/C++ and C#.Net Programmer

    Ukraine - Tests: 5

    I am strongly oriented on deep understanding of customer's needs and business aspects which allows me to generate appropriate software design and solutions. Having a lot of practical skills I enjoy to develop new and improve existing products and processes. Since 2000 I have developed desktop and server applications on Windows and Linux platforms with C/C++ means. And since 2008 I have expanded my experience level with C#.Net practices. My strengths are: algorithms programming, business logic investigation and development, performance optimization and data processing in addition to modern/up to date application UI generating. I'm Specialist (above Bachelor’s degree) in Applied Mathematics and Informatics. Find below my expertise and skills: - Project Management Methodologies: Waterfall, Agile, SCRUM - Quality Assurance and Issue Tracking Tools: Axosoft OnTime, Seapine TestTrack, JIRA - UML Design Tools: Microsoft Visio, Rational Rose, - Source Control Tools: SVN, CVS, Microsoft SourceSafe, Seapine Surround SCM - Programming Languages, Technologies and Libraries: C/C++/C#.NET, SQL/ADO/OLEDB/ODBC, ASP.NET, LINQ, COM/DCOM/Automation/ATL, WinINet, STL, Multithreading - Web Technologies and Frameworks: AJAX, jQuery, JavaScript, client side MVC\MVVM frameworks, Knockout.js, ASP.NET MVC, WCF, Web Forms, HTML, XML, CSS, Web Services, Authentication\Authorization - Databases: Microsoft SQL Server 2005/2008/2012, PostgreSQL, MySQL - Application Servers: Apache, Microsoft IIS - BI Tools: QlikView, JasperSoft - Twinfield API, Exact API - IDE and Tools: Microsoft Visual C++ 6.0/2005, MS Visual Studio 2008/2010/2012 - Virtualization: Citrix, VMWare, VirtualBox - Other: Estimation, Scheduling, Planning, Leading, Monitoring Thank you in advance for your time and consideration. I'm looking forward to work with you soon.

    $35.00 /hr
    130 hours
    5.00
  3. Antonio Torres

    Antonio Torres

    MEAN STACK developer

    Poland - Tests: 5 - 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
    79 hours
    5.00
  4. Pedro Tasies

    Pedro Tasies

    Senior .NET Software Developer

    Costa Rica - Tests: 3 - Portfolio: 5

    Senior .NET Software Developer with over 11 years of experience using Microsoft .NET, C#, Visual Basic .NET, ASP.NET, ASP.NET MVC, SQL Server 2010/2012, Linq, Entity Framework, HTML, Javascript, AngularJS, jQuery, and many other technologies. I'm a results driven person, my English is perfect and I live in Costa Rica, so I share the same time zone with American and Canadian companies.

    $22.22 /hr
    2,526 hours
    5.00
  5. Karel Boek

    Karel Boek

    Authorized consultant for Streaming Media and Software Development

    Norway - Tests: 2

    Streaming Media and Web expert with more than 15 years experience. Authorized Wowza Media Systems consultant. Experienced with consultancy, architecture and implementation of large Streaming, IPTV, OTT, etc. solutions Some of the competences: - Streaming Media, webTV, IPTV, satellite technology - Wowza Media Systems products and services - Amazon Web Services - Java, PHP w/various frameworks, .NET, JavaScript, - MySql, MSSQL, Redis, various NoSQL databases See also www.raskenlund.com

    $175.00 /hr
    341 hours
    5.00
  6. Robert M.

    Robert M.

    Networking/VoIP/Build/Test/SQA Professional

    United States - Tests: 4 - Portfolio: 1

    I'm proficient in networking (Cisco - working on CCNA), operating systems (Linux, UNIX, Windows, MacOS and a few others) as well as Open Source PBX systems such as Asterisk, Trixbox, FreePBX, Elastix and PBXInAFlash. I have done extensive SQA (software testing) as well as scripting (bash) for administration of various servers. I can code in Python, PHP and some Java and Java Enterprise. I've worked extensively with Jenkins for build/deployment environments. I'm quite skilled with web application type servers, including Apache, Tomcat, JBoss, as well as various mail relays - Postfix and Sendmail. When it comes to security, I'm quite proficient at the command line with iptables as well as some open source type firewalls (Sonicwall). I am no stranger to packet analysis/sniffing a network with tools such as Wireshark, ettercap and nmap.

    $25.56 /hr
    118 hours
    4.60
  7. Dmitry O.

    Dmitry O.

    Java/Scala/C++ Senior Developer

    Uruguay - Tests: 6 - Portfolio: 3

    10+ years experience in Java EE & Core Java. 4 years experience in C++. Practical experience in: - architecture, design, development, testing and deployment of server-side and desktop applications, databases. - transaction processing, distributed SOA systems integration. - work experience in small to large teams, for government, commercial and financial clients. Java technologies: Core Java, Java EE, EJB/JPA/Hibernate, WebServices integration. WildFly(JBoss)/GlassFish/Tomcat servers, Spring and Struts MVC frameworks. Scala stack: Akka, Spark SQL (with DataStax). Java UI: JSF, JSP, Swing, SWT. C++: Qt, STL & boost. Databases: Cassandra(DataStax), ElasticSearch, MySQL, PostgreSQL, MS SQL Server. Development tools: Maven, SBT, JUnit, Git/Mercurial. OS: Linux server administration & Bash scripts. DataCenters: Google Storage.

    $30.00 /hr
    566 hours
    5.00
  8. Vikram Singh Saini

    Vikram Singh Saini

    Business Solutions Specialist

    India - Tests: 1 - Portfolio: 8

    Delivering satisfaction to Upwork's clients for their investment along with 110% quality deliverable. I am capable of following strict directions as well as conceptualizing solutions that will work for you. I have an excellence reputation as a hard worker and talented developer. Belief :- Money is by-product of high quality work. ------------------------------------------------- Four 'E' summarize me: ------------------------------------------------- 1. Expert in development using C#. 2. Extremely professional with clients. 3. Excel in written & verbal communication. 4. Exceed more than your expectations. ** Focus on building long lasting relationship with client(s). ---------------------------------------------------------------------------------------------------------

    $16.67 /hr
    65 hours
    4.98
  9. Syed Wajid

    Syed Wajid

    Software Engineer

    Pakistan - Tests: 5

    I am an experienced Java, HTML/CSS/Javascript/jQuery/PHP/Phonegap and Mobile application developer. Over the last 5 years I have been involved in analysis and solving problems with the help of common design patterns and best practices using java. Used Spring MVC, appache struts 2, for web application development. I also have experience in mobile application development mainly on Android, Blackberry. Recently i also have been working on PhoneGap, jQueryMobile, HTML5, CSS3 for hybrid application development. Working on PHP since two years. Worked extensively on big projects based on PHP, Ajax, jQuery.

    $25.00 /hr
    42 hours
    4.21
  10. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Tests: 2 - Portfolio: 2

    I manage and use free/open source software and GNU/Linux (most experienced Debian) since 2000. I have also participated in numerous conventions related to these themes (some of them as speaker) and collaborating with the discovery of bugs in applications for contribute with the community. Specialties: Networks and operating systems security, monitoring technologies. Advanced knowledge of GNU/Linux environments and virtualization platforms. LANs, WANs, VPNs, Firewalls, TCP/IP. Description of services: ---------------------------------- Servers: ====== Installations, configurations and maintenance plans for servers running GNU/Linux or free BSD operating systems range. * Planning, installation and configuration of GNU/Linux systems as both free and open source systems. * Installation, configuration and maintenance of servers of BSD range: FreeBSD and OpenBSD. * Print servers. * Mail servers with spam and virus filters. * Proxy servers. * Fax servers. * Corporate instant messaging servers. * Install and configure DNS servers. Procedures for domain management. * Management servers for uninterruptible power supplies. * Web servers (Apache, PHP, MySQL and PostgreSQL). * Database servers (MySQL and PostgreSQL). * DHCP servers. Networks and Infrastructure: ===================== Installation, maintenance and failure analysis of networks. High-availability systems, mass storage, remote backup, and monitoring equipment and services. * Installation and maintenance. * Firewalls. * VPNs. * DMZs. * RAID, SAN and NAS systems. * Implementation of VoIP telephony systems. * Virtualization systems (for production systems, development and testing). * Remote backup systems. * Monitoring systems. * Control, preventive analysis and resolution of faults in networks. * Installing and configuring high availability clusters. Consultancy: ========== My main goal is to provide a work environment based on trust, integrity and transparency, in order to become your strategic partner to help you realize your projects. My experience in the field of free/open source technologies allows me to offer a wide range of consulting services for your business, which include audit and analysis of systems, applications and networks, migration to free and open source systems, and systems integration, among others. * Migrating to free and open source systems. * Network analysis. * Security analysis. * Configuring applications. * Systems integration.

    $36.67 /hr
    55 hours
    4.92