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Spring Framework Upwork freelancers typically receive a client rating of 4.63.

4.63
Last updated: September 1, 2015
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  1. Ruslan B.

    Ruslan B.

    Server-side (backend) developer: Java, Groovy, Grails, Spring

    Russia - Tests: 2 - Portfolio: 4

    I have 15 years of experience in software development, 10 years of Java experience. I worked in many areas, for both local and international companies. I have got a full-time job, but I'm interested in getting a few more freedom for myself while getting new exciting tasks to do. My primary programming platform is Java+Groovy (and Grails). I am experienced with Grails guts as well (Spring, Hibernate). I am familiar with Quartz and Atmosphere. I also worked with some assembly language, basic (and vb), pascal (and delphi), C++, C#, ActionScript 3, Objective C, Perl and PHP. I have some basic knowledge of lua, tcl, python (I can modify/fix existing code). But these are secondary tools, my primary language and area of interest are Java and Groovy. I know the NoSQL and map-reduce principles, and worked with MongoDB and Cassandra as well as traditional relational databases (MySQL, PostgreSQL, Firebird). I was working in a teams (though maximum was 5 developers only) so I'm familiar with the bug-trackers, version control systems (svn, git, perforce, and even cvs), I love maven and gradle, also love the continous integration tools like Jenkins and Teamcity. As you might guess, I am a fast learner. I like to do complicated tasks. Unlike many other developers, I like to deal with code written by others. I like to debug and profile it, to refactor etc. I'm not fanatic of code improvement (if it works it's good enough), but when I see the portion of code which is hard to understand or which can cause bottlenecks or which is dangerous - I'll fix it :). Together with software development, I like some minor reverse-engineering. I was used to do some work with IDA, and ofcourse with JAD (and now with JD). I used some ActionScript decompiling tools when dealing with AS3 project. Also I know about web application protection. I always escape user input, filtering unnecessary stuff when needed. I won't do chmod 777 anything at your server as well. I'm a very cross-platform guy. I use linux, mac os and windows and I know how to launch your java app on these platforms natively. I don't hesitate to ask the questions when I'm unsure about the task. I believe it's better to seem stupid than waste my time and produce the bad implementation. I always do my best to meet the deadline. I'm not looking for a single job for a few hours only (although I like this kind of jobs), I'm looking forward to "win - win" relation, where you can be sure I meet your conditions and I can be sure you'll provide me with some interesting tasks, promt payments and clear directions. You're more than welcome to contact me and ask any questions about my background or experience. I'm available for voice communication too, evening time only (starting from 15:00 GMT or 7am PST). If we work long-term you'll have more contact options. I'm available on Skype, Jabber, Viber. Last but not least: I've got 2 broadband connections at home, and I'm always online on my phone, so I won't get lost.

    $27.78 /hr
    516 hours
    5.00
  2. Vyacheslav Soldatov

    Vyacheslav Soldatov

    Senior Java developer

    Russia - Tests: 1

    Java developer for 14 years. I have developed a web applications using Java, JSP, Servlets, DHTML, Java EE, JDBC and standalone Java applications. My competency lies in development of full end-end products. I'm seekin opportinities for build java based web applications, standalone Java applications or Eclipse plugins. Also have experience in the following areas: GWT, Swing, AWT, SQL, OOP, JUnit, OSGi, Maven, Ant, Git, SVN, CVS and software design and testing.

    $33.33 /hr
    3,543 hours
    4.89
  3. Mihovil R.

    Mihovil R.

    Web and Lotus Notes/Domino developer

    Croatia - Tests: 14 - Portfolio: 8

    I am a passionate J2EE/Java, Lotus Notes (certified), Node JS software developer and architect with over 6 yrs of professional experience including other programming languages like C# Vb.net and others. Wide range of experience in developing and maintaining Java/J2ee web systems, Lotus Notes web and client applications and plugins as well as Node JS applications and REST APIs. I, also, have a great deal of experience in PDF generation MS Office/OpenOffice document automation and assembly, VB, VBA, various document format manipulations. My goal is to make my employers happy and content with solutions I make them. I do not do mediocre jobs and do not make/give mediocre solutions so choosing me as your contractor offers a great deal of quality and professionalism. I also offer a lot of consultation services on many software development areas and always for free when they are a part of my project. I pride myself in good work ethics and moral and I know my employers see and value it. Interesting, useful and challenging projects make my heart race, motivate me and I am always willing to step in or join in any way possible. You got one? Send me a short note about it ASAP !

    $25.00 /hr
    1,041 hours
    4.97
  4. Alexey Dubrov

    Alexey Dubrov

    Java Solutions Architect

    Belarus - Tests: 2

    Highly skilled Java Developer. I’m specialised in back-end development, but also familiar with front-end. You can hire me to develop architecture and build application from scratch or to be the part of your team. Back-end technologies: - Spring-framework, spring-security - JPA/Hibernate + Spring-Data - REST and WebServices - JMS - Lucene framework - Maven/Gradle Front-end technologies: - Spring-MVC or Grails - template engines: JSP/JSTL, GSP, Freemarker, Jtwig - JQuery and Bootstrap - AngularJS Desktop: - Swing or JavaFX

    $33.33 /hr
    1,662 hours
    5.00
  5. Roman Rasskazov

    Roman Rasskazov

    Senior Java Developer

    Belarus

    Hello! I'm a 6-years experienced Java Developer and I am proud to say to you that I find not only professionalism, but also responsibility and sincerity as my key strengths. My aim is to satisfy all the requirements you may have. Small or mid-size (up to 2-3 months) projects prefered because they give me a good experience in a short term and don't become boring. But if you have a big and interesting project I'll be happy to work with you. My specialization is back-end, but I have also front-end experience. I would like to expand even more my front-end knowledge to be able to solve any problem you have. I have experience in building various types of software from small-scale to distributed Big-Data products. The most interesting project I took part in is RadiumOne project (http://radiumone.com) which is a real-time bidding advertisement network system. It processes up to 500.000 requests per second answering in less than 40ms per each. It was a real challenge! I would like to keep a good atmosphere in the partnership with you and hope you look for it too. EXPERIENCE Master of Computer Applications degree in Belarusian State University. 6+ years experienced in Java, worked for a wide range of companies as Senior Developer, Lead Developer, TeamLead and am now starting my freelance career. I'm most experienced in: Java, Spring (IoC, MVC, Data, AOP, Security), Hibernate, SQL, JDBC, JSP/JSTL, Git, Agile. Also I have different degree experience in: Web Technologies: HTML/CSS, JavaScript, JQuery, Ajax, JSF, JSON, XML, REST, SOAP, Jersey, Restlet, OAuth, AWS Other Technologies: JUnit, Multithreading, Azure, Swing, Log4j, Databases: Oracle, MySQL, MSSQL, Mongo DB, Jongo, DynamoDB, NoSQL Build Automation/Version Control: Ant, Maven, Gradle, SVN, Git Operating Systems: Windows, Unix (Suse Linux, RedHat Linux, AIX, HP-UX) Bug Trackers/Code Review trackers: Jira, Crucible Will be happy to establish win-win cooperation with you! Roman

    $35.00 /hr
    43 hours
    4.96
  6. Robert Klodzinski

    Robert Klodzinski

    Full Stack Website Developer

    Poland - Portfolio: 8

    I specialize in developing Java web applications, mainly using Spring Framework, JSF and Hibernate. I have over 7 years of experience in this field working on many big and small projects. I feel very comfortable working on complex and demanding projects while still maintaining high standards and quality as well as a bullet-proof code, despite pressing deadlines; I work right the first time, correct own errors, regularly produce accurate, thorough, professional work. I have the ability to break a situation down into smaller pieces to identify its key or underlying issues. It includes not only organizing the parts of a problem systematically and comparing all the aspects of a problem, but also figuring out cause-and-effect relationships (if...then...) that can help solve it. I am able to adapt and be open to new ideas and improvements to products and processes.

    $35.00 /hr
    226 hours
    4.73
  7. Aleksandr N.

    Aleksandr N.

    Full Stack Engineer (Java, AngularJS)

    Estonia - Tests: 3 - Portfolio: 1

    Experienced Java Engineer with 8+ years of experience, 400+ UpWork hours and official UpWork Top Developer certificate. Expertise areas: - Core Java. - Spring Stack (MVC/Security/Spring Boot). - Front end technologies - Angular JS, HTML5, Bootstrap. - Databases - MySQL, Oracle, PostgreSQL, Hibernate. - NoSQL databases - CouchDB. - Java Swing (standalone Java desktop applications). Recently involved in design and development of highly reliable enterprise distributed Java applications, consisting of micro service based architecture, asynchronous JMS/queue based messaging, transport based on REST. Also interested in algorithms, competitive programming and computer security. Passed numerous classes on Coursera. Check out my LinkedIn profile here: https://www.linkedin.com/in/aleksandrn

    $50.00 /hr
    446 hours
    4.92
  8. Dinko I.

    Dinko I.

    Java, Eclipse RCP, Eclipse Plugin, EMF, GEF, GMF

    Bulgaria - Tests: 3 - Portfolio: 12

    I specialize in desktop solutions, tools and IDEs using Java and Eclipse RCP / plugin development. I have over 13 years of working experience as a software engineer, 7 years of which in SAP AG, currently developing scientific tools for petroleum engineers. MSc degree in Computer Science. Java certified professional. Occasionally I work on full-stack web application development and iOS mobile app development. Customer references are available also at Elance: https://www.elance.com/s/gepard-soft/job-history/?t=1 I also have experience in the following areas: OOP, JEE, HTML, SQL, Objective-C, Flex and Adobe AIR.

    $45.00 /hr
    1,353 hours
    5.00
  9. Damir Sultanbekov

    Damir Sultanbekov

    Java EE/Ruby on Rails/SQL Developer

    Russia - Tests: 7

    Highly motivated developer with more than 11 years of experience. I always try to perform my tasks as good as possible. Like work in team, but also have no problems working alone. 8 years in Java & J2EE field (EJB, JPA, JSP/Servlets, Portlets, WebServices, Spring Framework, Grails, etc.) 5 years in position of TeamLead/Architect. Since autumn 2014 working with Ruby/Rails. Experienced in web development using HTML/CSS/Javascript: Jquery, Dojo Toolkit, Bootstrap Have no problems with all aspects of database programming, worked with many database systems, including Oracle, IBM DB2, Postgresql, MS SQL Server and others. In past worked with Delphi, C#/Mono, C/C++, Mumps Worked on large-scale projects for russian goverment and commercial institutions such as Sberbank (largest bank in Russia), Russian Federal Agency of Communications, Russian Pension Fund and others.

    $35.00 /hr
    503 hours
    5.00
  10. Ioannis F.

    Ioannis F.

    Java Software Engineer

    Greece - Tests: 4

    Senior Software Engineer. During the last 11 years I have worked on developing a large number of different applications and/or components, including web applications, CMS, RESTful APIs and server-side components for mobile applications and mobile marketing. Core technologies and frameworks involved were Java, Spring/Spring MVC, Jersey, JPA & Hibernate, JSP, XML, HTML, CSS and a range of JavaScript libraries and frameworks. I have extensively used a large number of software engineering tools, including Maven, Ant, Nexus, Hudson, Bamboo Subversion, Git. I'm eager to use new and fascinating technologies for development of state-of-the-art applications.

    $45.00 /hr
    4,175 hours
    5.00