Android App Development Java Freelancers

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Evgeny S.

Evgeny S.

Senior Software Engineer

Russia - Tests: 4 - Portfolio: 6

I am an independent software engineer with a very broad range of development skills and technologies. I most enjoy working in small innovative teams and with individual decision makers to help grow their ideas into mature and robust software systems based on modern technological foundations. I'm also not a stranger to big software companies, and I can be a reliable team member as well as a small group project architect/leader when needed. I have experience with the following technologies: - C++, Python, JavaScript, C#, Java - Nginx, Gunicorn, Gevent, Flask, Django, jQuery, Node.js, Apache. - MS SQL, DynamoDb, Amazon SDB, MySQL, Redis, NoSQL. - Linux, Amazon EC2, SQS, SNS, S3, RabbitMQ. - Win32 API, HTML5, Android, NDK, GTK, WinForms I'm also eager to extend my experience in cutting edge technologies and programming languages like Golang, Erlang, Nim, Rust, Haskell... I am looking for the opportunity to design and build a system from the ground up for you!

$45.00 /hr
2,573 hours

Roberto Garrido

Roberto Garrido Agency Contractor

Senior Mobile & Desktop Developer

Spain - Tests: 2 - Portfolio: 12

I am a Senior Mobile and Desktop Developer looking for new challenges everyday. My main interests are focused on 2D/3D and mobile videogame programming, and apps. Since I was in college, I always chose those projects and subjects related with mobile, videogame, and 3D graphics. I've always been an enthusiastic about graphics, and programming is not only my job, but also my hobby. I can divide my career into two main periods, first as researcher, then as professional programmer. I started working as an intern in a Research Center, where I developed my research and programming skills and participated in various projects, both as programmer and also as project manager, all of them related with mobile Virtual and Augmented Reality. I even published 3 articles in the field of 3D Computer Graphics, and attended various conventions. After my period as a researcher, I move to the professional industry where I work two years as main graphics programmer in a Simulation Company. There, I develop my team work ability, working everyday with colleagues of different professional skills, like 2D/3D designers. My main goal was to get a highly stable and flexible C/C++ based rendering engine, able to be used in multiple kinds of simulators, like trains, tranvs, and bus. My last full time collaboration in a company was now 3 years ago, in a medical imaging company. As part of the development team, I learn new APIs and frameworks related with the medical imaging world. My main contributions were on the 3D visualization module, where a doctor (specialized on aorta prothesis) could interact with a 3D representation of the aorta and determine the exact size of the prothesis to be implanted. The last 3 years of my career have been focused on my freelance programmer career. Here in upwork, I'm one of the top rated profiles, with more than 2,200 hours billed on my back. I sell programming services to both individual clients and startups, specifically in projects involving 3D programming, app programming, and videogames. I encourage you to have a look at my portfolio here in upwork and read the feedback I received from my clients. The success of your project is guaranteed with me! Here you can see a list of applications, languages, and tools I use in my daily life: Applications: Videogames, Games, 3D Editors, Medical Applications Programming languages: C/C++, Objective-C, Java, C#, Visual Basic, Javascript Frameworks/APIs: OpenGL, ARToolkit, Cocos2dx, UIKit, Qt, Ogre, VTK, ITK, OpenSceneGraph, Unity3D, WebGL, Three.js Platforms: Windows, Linux, Mac OS X, Android, iOS Programming Tools: XCode, Visual Studio, Eclipse, AppCode Also, here you can see a list of devices I own: iPhone 5S, iPad Air (Retina Display), iPad Mini (Non Retina Display), Android Xiaomi MI 2S, Macbook Pro (Retina Display), PC with Linux & Windows 7 installed.

$41.99 /hr
2,538 hours

Kanchan Singh

Kanchan Singh Agency Contractor

Java, J2EE, Spring, Hibernate, PHP ,Angularjs, Android App Development

India - Tests: 5 - Portfolio: 11

I have 5 years of experience in Java based Web Application and have worked on various projects using Java, J2EE, Grails, Struts2, Hibernate, MySQL, Javascript, Angularjs, HTML5, CSS, Bootstrap3, Jquery etc. Expertise: -PHP, MySQL, Jquery , Ajax, Perl, SQL, MySQL, Postgress, Oracle, Tomcat, Java and more Web technologies. - Experience on JSON/REST API , XML Data Parsing - Java, J2EE, Spring (MVC/Security/Rest), JSF, Hibernate, JSP, JSTL, Apache Tomcat - MySQL, Oracle, PostgreSQL - Javascript, Angularjs, Node.js, Sencha(Extjs 4.x), jQuery - HTML5, CSS3, Bootstrap 3 - SVN, GIT Server Side Technologies :- Java,J2ee,Spring (Spring AOP, Spring Dependency Injection, WebServices, JSF ), Hibernate, Struts 2, Jersey RESTFUL Webservices, JSP, Servlet. Client Side Technologies Extjs 4. Sencha Touch 2, Jquery 1.7 , Dojo .HTML 5 , Css3 , Ajax. Databases :- NOSQL , MYSQL , Oracle, MS Sql Server Cache : Ehcache , Memcache and Gemfire JMS : (Active MQ , Rabbit MQ , QPid ) Testing Junit Version Management :- SVN , CVS and Git hub Server :- Tomcat , Jboss

$12.00 /hr
183 hours

Rafal Rzepecki

Rafal Rzepecki

The Humanist Programmer

Poland - Tests: 11

Highly skilled in programming with C++/Qt, ruby, perl, python, Java/Android, bash. Knows his way around CSS/HTML5/JavaScript, OCaml and SQL in Oracle, SQLite and Postgres flavours. Years of experience using and administering Linux systems, but easily does any task on Windows or Mac when necessary. Enjoys using LaTeX to produce high quality publications; quick and accurate in catching typos and general proofreading. Knows his way around vector graphics and will trace any line art bitmap to a high quality vector illustration. Basic retouching skills.

$81.89 /hr
3,320 hours

David L.

David L.

Senior J2SE/J2EE, Javascript developer, Dojo Expert, AngularJS.

China - Tests: 3 - Portfolio: 2

Over the last 8 years, I have developed a wide range of web applications using Java, J2EE, WebService, Applet, HTML, DHTML, Javascript and MySQL, MSSQL, Oracle . I am seeking opportunities to build websites from the ground up for you or your business. Technical Skills: - Java - Core Java, J2EE - JDBC, JTA, JMS, Java Servlet, JSP - Web Services, XFire - Struts, Hibernate - JavaScript - Dojo Toolkit - Extjs - jQuery - AngularJS I also have some experience in the following areas: DOJO, SQL, Ajax, OOP, and software design and testing.

$55.56 /hr
5,846 hours

Eduardo M.

Eduardo M.

Ruby on Rails / PHP / Javascript / Backbone.js / Angular.js

Bolivia - Tests: 6 - Portfolio: 7

- Software engineer with 5+ years of experience on Web, desktop and mobile development - Excellent communication skills and team player - Full Stack Open Source Software Engineer - Strong object oriented programming and design patterns skills SPECIALTIES AND EXPERIENCE - Programming languages: Ruby, PHP, Javascript, Java, Python, Objective-C, C, C++, Visual Basic, HTML, CSS - Web backend: Ruby on Rails, Sinatra, Node.js, Wordpress, MySQL, PostgreSQL, Redis - Web front-end: SASS, LESSCoffeeScript, Backbone.js, AngularJS, Underscore.js, jQuery - Infrastructure Environments: Amazon Web Services (AWS), Heroku, Digital Ocean - Development tools: SublimeText, Git, SourceTree, PivotalTracker, Atlassian Jira, Basecamp, Balsamiq Mockups - Operating Systems: Mac OS X, Linux, Windows - System administration with Unix based systems - Mobile development: Native iOS apps with Objective-C, native Android apps with Java - Desktop development: Desktop apps with Java and Python + GTK - Test Driven Development (TDD) - Agile software development - UX design PASSIONS - Learning new technologies - Open Source Software - Distributed and scalable systems design and implementation - Awesome and innovative UI design - Mountain biking

$60.00 /hr
3,474 hours

Vitaly Sas

Vitaly Sas

Expert Android developer

Belarus - Tests: 3 - Portfolio: 3

I specialize in developing Android apps and have over 4 years of experience in commercial app development. I'm looking for a interesting projects to do a really good job. Challenge me and I'll do my best to create high-quality app in order to meet your wishes. I look forward to working with you. Thank you for reviewing my oDesk resume. Best regards, Vitaly Sas.

$50.00 /hr
2,317 hours

Ruslan Ponomarenko

Ruslan Ponomarenko

IPhone (Objective C), Android, C# Developer, VBA, TSQL, VB ACCESS

Ukraine - Tests: 4 - Portfolio: 9

I am experienced in development of mobile software both for iOS (iPhone, iPad, Desktop) , ANDROID . My preferred languages are Objective-C, Java, C# (.NET), PHP. This allows me to participate successfully in cross platform projects, including network services and GUI applications. I mostly work under development of iOS Mobile applications at the moment but my experience includes development of ANDROID applications (Java) and Desktop applications (C#, Cocoa), Web Applications (PHP, C# Asp.NET). My programming experience will enable me to fulfill your task successfully and quickly enough!

$36.67 /hr
4,923 hours

Sergey Rogachov

Sergey Rogachov

Technically challenging systems development.

Ukraine - Tests: 10 - Portfolio: 2

Why you should hire me , instead of cheaper alternatives? Because you get what you pay for . Who am i ? I am a software developer, team lead and project manager with more then 19 years in industry. My strong sides are: problem solving, optimization, reverse-engineering skills, focus on client needs, attention to quality and economics of the decisions, deep understanding of computer systems and software architecture. I worked on various projects for different industries like marine transportation, web application for computer-aided learning, mobile applications; security: iClass, rfid, reverse-engineering.

$44.44 /hr
851 hours

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
4,443 hours