Top Upwork Freelancers

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  1. Jakub K.

    Jakub K.

    Experienced backend developer (.Net, SQL, network security)

    Poland - Last active: 1 day ago - Tests: 8 - Portfolio: 2

    I'm developer with over 10 years of experience in IT. I like ambitious projects and working with creative people. In my everyday work I deal with very large systems and databases (for example distributed system of 450 departments with hierarchical data replication). I have experience in every phase of IT system life cycle starting from analysis through development and implementation ending with deployment and maintenance. My skills: Networking (CCNA, CCNA Security) Servers Administration (Windows / Linux) Developer (C#, Java, Android, PowerBuilder) Databases (Oracle, Sybase, PostgreSQL, MS SQL) Analyzing and modeling IT systems

    $27.78 /hr
    2,093 hours
    5.00
  2. Lars H.

    Lars H.

    Business Intelligence and Software Development Expert

    Germany - Last active: 11 days ago - Tests: 1

    Lars has more than 9 years of experience helping companies across a broad array of industries to deploy planning capabilities in form of business intelligence solutions to significantly improve business performance. With a lot of passion for technology and vision for modern, pioneered innovations Lars shaped from a software developer via IT Management positions up to a specialist for business intelligence solutions. Over the last several years, Lars has focused on bridging business towards technology in order to deliver best-practice approaches for business intelligence solutions. In his former position with Digital Tempus he helped global companies (TOP 50 Fortune) to shape needs for sales and operations planning and transform those into an insight-driven planning solution based on Microsoft’s Business Intelligence and .NET stack. The fruitful combination of deep knowledge of both, software development and business intelligence, alongside the capability to understand and transform business needs, makes Lars a widely positioned and respected business intelligence expert. His great and deep expertise in the entire Microsoft database and BI stack, especially database services, integration services as well as analysis & reporting services allows Lars to accomplish basically every complex task. -- I reside in Germany but my time is very flexible so even when you are located elsewhere I can definitely make sure to make myself available whenever you need me. I work for almost 10 years in the area of information technology. To be more precise I owned my own software development company, focusing on windows based client developing under C#, WPF, SQL Server, WCF and all the good stuff that comes with it. While my team (and I) have been focusing on this side I got myself involved for the recent 4~5 years in the area of Business Intelligence. I am on an expert level in terms of data warehousing and business intelligence solutions under Microsoft Technology. SQL Server, Analysis Services, OLAP, MDX, DAX, PowerView, PowerPivot and even Power BI and Sharepoint is something that I work with on a daily basis. I am also very engaged in software development. That is what I learned back than and that is what lets me build a "face" on top of all that data analytics. My recent project was about an enterprise business planning suite developed in C#, WPF, WCF. It has just recently been rolled out to around 150 users all over the globe.

    $83.33 /hr
    681 hours
    4.85
  3. Yuriy Kovalenko

    Yuriy Kovalenko

    Expert Web Developer - PHP/MySQL/AJAX/CodeIgniter/WordPress

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

    I am pleased to present my candidacy as an experienced and proficient web developer with several years of experience in IT industry. I mainly specialize in: - PHP (OOP)/ MySQL, AJAX; - JS frameworks (jQuery/Node.js/Express/Backbone) - PHP frameworks (Zend/CodeIgniter/Kohana); - WordPress platform (creating plugins/themes from scratch); - Slicing responsive designs into valid HTML5/CSS3; - Implementing payment gateways (PayPal, Authorize.net, Google checkout); Also: SVN/GIT, Jirra, Assembla etc

    $22.22 /hr
    2,234 hours
    5.00
  4. Chris H.

    Chris H.

    Web Developer (ASP.NET | MVC | AngularJS)

    United Kingdom - Last active: 1 day ago - Tests: 6 - Portfolio: 6

    Microsoft Certified Solutions Developer with over three years’ programming experience using .NET framework to deliver web and desktop applications. I’m a passionate C# developer with extensive knowledge and experience with: - ASP.NET back and frontend development, including WebAPI 2, MVC 5 - Client side scripting, JavaScript, jQuerry, AngularJS, Knockout - Clean and SEO-Friendly HTML5 and CSS - Task automation using Poweshell scripting and C# applications Committed to designing up to spec, reliable and extendable solutions. Focused on delivering quality work on time and within budget. Always open for communication. Highly flexible, independent contractor that will get the job done for you.

    $20.00 /hr
    227 hours
    5.00
  5. Muhammad Imran Afzal

    Muhammad Imran Afzal

    C/C++ Developer,Device Driver,Kernel modules and Bash scripting Expert

    Pakistan - Last active: 5 days ago - Tests: 4 - Portfolio: 1

    I have 6 years of experience in Linux development and administration. Device Drivers, Kernel Porting, Kernel Modules, Development in networking protocols, gcc/g++ and Python are my expertise. I have strong knowledge in Linux internals including kernel specifics and system calls. I have work experience with mips64 based Cavium's OCTEON multicore netwrok processors. I have worked on network protocol offloading in this. I have the ability TO DO.

    $22.22 /hr
    13 hours
    5.00
  6. Ofir Vaknin

    Ofir Vaknin

    Business & Data Analyst (Data Storyteller)

    Israel - Last active: 1 day ago - Tests: 2

    Areas of Expertise * Collecting, controlling and analyzing complex data sets, in support of senior management and internal customers. * Developing, maintaining databases and corresponding Dashboards. * KPI development, implementation and controlling. * Performing process analysis in liaison with end-users. * Design, develop and implement share point based systems Excellent proficiency in: data analysis, data visualization, data mining, systems analysis, process design, database design and implantation, data warehousing systems, training development. BA Management & Logistics - Bar Ilan University, Israel

    $40.00 /hr
    924 hours
    5.00
  7. Huong Le

    Huong Le

    FileMaker Developer/ Database Design/ SQL/ MySQL/ PHP

    Vietnam - Last active: 3 days ago - Tests: 2 - Portfolio: 3

    Hello, I work as a FileMaker developer with five years experience in FileMaker. I have done a variety of small and large projects for MAC/PC, iPad and iPhone. I can integrate multiple files system into either a single file or a data-separated solution, connect FileMaker database to Website and publish FileMaker database on Web by using WebDirect or PHP. I'm working on FileMaker Pro as well as Pro Advanced and FileMaker Server 12, 13, 14 now. I have completed successfully many solutions and get the clients satisfaction. I am proud to provide the most effective solution to my client. All of your project appeal to me, I am pleased to work and offer the best solution to you. I speak English fluently and improve my skills everyday. I am a quick learner, patient and pay attention to detail. My goal is to always develop a powerful, user-friendly database. I can fully assure that you will be satisfied with the quality of my work. Thank you for hiring me.

    $15.00 /hr
    48 hours
    5.00
  8. Andrew Lisun

    Andrew Lisun

    Android developer

    Ukraine - Last active: 1 month ago - Tests: 4 - Portfolio: 2

    If you're interested in efficient, well-designed, extensible android application, most likely I'm perfect choice for you. I have strong skills in object-oriented programming and Android app development. My applications are portable between various android devices and have pleasant user interface. Apart from this I had experience with Facebook API. So, if you also need to make your app social you're looking through profile of developer who can do this perfectly. Also I had experience with git, C++, Qt. I guarantee you a high quality applications.

    $15.00 /hr
    63 hours
    5.00
  9. Lai Tash

    Lai Tash

    Python developer

    Russia - Last active: 1 month ago - Tests: 3

    Hello and thanks for your interest in my profile. I've started my programming path in mid 90th, starting from atari and msdos programming. Approximately five years ago i've turned my face on Python, which now became my prefered programming language and the one i have the most experience with, both in desktop and web development.

    $20.00 /hr
    396 hours
    4.94
  10. Darren Davies

    Darren Davies

    Software Engineer

    United Kingdom - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    A professional Software Engineer based in the England (North East). BSc (Hons) Computer Science, Microsoft Certified Professional and Microsoft Specialist. Experience in the following technologies: C#, C, C++, Delphi, VB6, VB.NET, ASP.NET MVC (nHibernate, Fluent nHibernate, Entity Framework), ASP.NET, Java, PHP, SQL, T-SQL, SQL Server, MySQL, SSRS, SSIS, SharePoint (2007, 2010, 2013), mIRC Scripting, Workflow, K2 BlackPearl, HTML, HTML5, CSS, jQuery and JavaScript.

    $70.00 /hr
    935 hours
    5.00