Top Upwork Freelancers

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  1. Lai Tash

    Lai Tash

    Python developer

    Russia - Last active: 15 days 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
  2. Diaa Sami

    Diaa Sami

    Professional C++ Developer, Software Engineer, Computer Wizard

    Egypt - Last active: 2 days ago - Tests: 18 - Portfolio: 9

    I am an ambitious and established software developer who started development in highschool, I'm fond of graphics and interactive applications in general and the open-source philosophy. I have used several programming languages, frameworks and APIs, including but not limited to C/C++, .NET, Java and Python, wxWidgets, OpenGL, Win32, COM and sockets, I've programmed for several platforms ranging from hand-held devices to Desktops(Windows and Linux) and client-server applications. I'm always interested in challenging jobs.

    $27.78 /hr
    2,086 hours
    4.99
  3. Michael Ravits

    Michael Ravits

    Full-Stack Software Engineer

    Israel - Last active: 4 days ago - Tests: 2 - Portfolio: 1

    I am a Full Stack Developer with over 9 years of experience in the industry, working both on Web as well as native applications. While I excel at working with a team, having experienced managing a remote group of developers, I am also capable of single-handedly delivering projects from start to finish. With my skills and experience, I always strive to produce clean, robust and highly tested code for every project. Having a very broad experience with numerous tools/languages and technologies, I specialize in building modern web applications and high-scale data processing pipelines. My language of choice is Clojure. Some of the technologies I've worked with in recent projects: - Server side development on the JVM * Clojure * Cassandra * ElasticSearch * Java * Kafka * Redis * Samza * Spark * Storm - Large and small client side applications in ClojureScript * Om * Reagent * ReactJS As a technology enthusiast I enjoy utilizing these cutting-edge tools to deliver projects quickly and efficiently.

    $79.77 /hr
    845 hours
    5.00
  4. Nikolay Moskvichev

    Nikolay Moskvichev

    C/C++ developer

    Russia - Last active: 3 days ago - Tests: 3 - Portfolio: 1

    Thank you for viewing my profile! My main objective is to provide excellent service, with timely, accurate, and professional results. Have been working in area of biometric solutions for a number of years. Have acquired considerable experience in image processing. Strong understanding of multithreaded development and Inter Process Communication and the challenges which this can cause. Have experience with database client applications development. C/C++ more than 10 years of experience (Windows/Linux).

    $22.00 /hr
    170 hours
    5.00
  5. Dmitry O.

    Dmitry O.

    Java/Scala/C++ Senior Developer

    Uruguay - Last active: 1 month ago - 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
  6. Juan Bautista Cabral

    Juan Bautista Cabral

    Senior Python Programmer

    Argentina - Last active: 1 day 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
    463 hours
    4.87
  7. Lars H.

    Lars H.

    Business Intelligence and Software Development Expert

    Germany - Last active: 24 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
  8. Yashpal Gohil

    Yashpal Gohil

    C++, Qt, VC++

    India - Last active: 1 day ago - Tests: 5 - Portfolio: 3

    In more than 7.5+ years I have developed softwares for desktop application and embedded platforms. Worked in different domains like education, security, farming soluction and PLM. Have expertise in C++ with Qt and VC++ on different version of OS of windows and Linux. Software Developement models used are Agile developement practice and waterfall model. Different version control systems I have used so far are, Mercurial, Git, SVN and CVS I believe in delivering quality product with end to end solutions for my clients.

    $22.22 /hr
    32 hours
    5.00
  9. David Kiss

    David Kiss

    Expert Software Developer - Java / Spring

    Canada - Last active: 1 month ago - Tests: 3 - Portfolio: 7

    As an Independent Java Consultant, I build enterprise-grade web applications to small businesses. My passion is engineering scalable, robust and future-proof web applications using open-source technologies. I'm a generalist who gets up to speed in a short period of time and delivers results consistently. With 10+ years in the software industry and delivering a dozen different projects I understand how to maximize ROI on Java-based web applications. SPECIALITIES - Taking business ideas off napkins and into reality - designing and building high performing web applications (Spring Boot, REST, AngularJS, Twitter Boostrap, Cloud, AWS) - Identifying and resolving critical customer-facing issues with short turn-around time - Integrating applications with 3rd-party services (JMS, SQL, NoSQL, Cassandra, Kafka, Neo4j, RESTful web services, LDAP, OAuth, Camel) - Scaling applications and resolving performance bottlenecks (Java, Hibernate, SQL) to keep maintenance costs down - Helping developer teams deliver high-quality code consistently (Agile, Scrum, Lean, Continuous Integration, Jenkins, automated deployment, Fabric, automated tests, JUnit, Mockito, JMeter) - Focusing on big wins and minimizing risks I’m located in Toronto, Canada and able to begin working on your job right away. Please feel free to contact me to discuss your project.

    $70.00 /hr
    58 hours
    4.95
  10. Saul H.

    Saul H.

    Java/C++/.Net Software Engineer/developer/integrator/consultant

    Venezuela - Last active: 7 days ago - Tests: 3

    Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices, materials management, promotions, etc. Algorithms and programming skills, strong knowledge of C/C++ and Java. Strong knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, Algorithms for graphs, dynamic programming and computational geometry. Accounting area, experience in handling all movement of materials between stores and shops, all the accounting related to its retail. Point of sale Area, experience with integration between POS software and label printers, fiscal printers, barcode readers, fingerprinter and keyboards for point of sale. Oriented Object Programming and Low-level: exprienced in Java and C/C++/C#. QT libraries and Visual Basic. Scientific Programming: Matlab. IDES: Intellij Idea, Eclipse, Netbeans, Kile, Quanta. Servers: Apache-Tomcat. Functional Programming and AI: Haskell and Prolog. Database: MySql Oracle, Postgres, SQL Server and FoxPro. Web Development/Frameworks: Php, Struts, Vaadin, ZK, html and css.

    $30.00 /hr
    1,756 hours
    5.00