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Andriy K.

Andriy K.

Expert Android Developer

Ukraine - Tests: 9 - Portfolio: 35

✔ Upwork Top Rated! ✔ Upwork All-Star Freelancer Club member! ✔ Upwork Verified Mobile Developers Club member! ✔ Oracle Certified Professional - Java Over the last 5 years, I have successfully developed over 25 Android applications from scratch on my own. My Java skills are confirmed by SCJP (Sun Certified Java Programmer), passed with 98% score. Excellent knowledge of the Android and Java platforms allow me to make quality and high-performance applications. Almost all applications and games that I made hit the Top 100 in the Nook Store, even a few hit the Top 10. Very good knowledge of OOP, OOD, Design Patterns, excellent problem solving and decision making skills. Extensive experience in different fields of the Android such as: - UI : Custom components, Fragments, Layouts, ToolBar, 2D Animations, Material Design, Dialogs, Menu, User Interaction(touches, gestures) - Core : Intents, Services, Receivers, Content Providers, Custom Adapters, Resources, Multithreading - Communication & Networking : HTTP, REST, Parse, AWS, Socket, JSON, XML, SMS, Bluetooth, Bluetooth LTE, iBeacon, NFC - Hardware and Media: GPS, Google Maps v2, Camera, Speech Recognition, Audio/Video editing, Sound, Playing Sound Effects, Accelerometer - Persisting Data: SharedPreferences, Files, SQLite, Backup and sharing data - Interacting with System: Notifications, Alarm Manager, Timed and Periodic Tasks, Persistent Background Operations, Contacts, Calendar, Task Stack - Graphics: Canvas, OpenGL, OpenGL ES (libGDX) - Social: Facebook, Twitter, Google+, Instagram, LinkedIn , Foursquare - Analytics: Woopra, Google, Localytics - IDE: Android Studio, Eclipse. I also have experience in developing Web Applications on J2EE platform. Core technologies and frameworks involved were Spring, Spring MVC, Hibernate, JPA; JSP, JDBC, HTML, XML, JSON, REST, JavaScript(jQuery, AngularJS), AJAX. My skills are confirmed by OCWCD (Oracle Certified Web Component Developer) passed with 94%.

Groups: Sun Certified Professionals

$42.22 /hr
10,738 hours

Rida Benhammane

Rida Benhammane

Sr. Java Developer/Architect, Oracle Java Master Certified

Morocco - Tests: 10 - Portfolio: 3

I'm a senior Java/Jee developer/architect with about 10 years of experience and Oracle Programmer/Developer/Master certified (SCJP, SCWCD, SCBCD, SCJDWS & OCMJEA). I'm well-versed in backend development as well as frontend development. In the backend, I have used plenty of Jee frameworks, from the core Jee APIs (EJB, JPA, JAX-WS, JAX-RS ...) to the other Jee frameworks (Spring, Struts, Hibernate ...). I have also done some Php development using raw Php, CodeIgniter and Laravel. In the frontend, I have been developing SPAs for about 3 years, using frameworks like Backbone and Angular and some other cool frameworks libraries like: jQuery, underscoreJS, requireJS ... Other skills that I'm also experienced in are: Unix/Linux scripting, SVN/CVS/Git versions control systems, Oracle/MySQL/PostgreSQL databases, ANT/Maven build tools, Tomcat web container, Apache web server ... In addition to my years of experience, I hold a engineering degree, in computer science.

Groups: Sun Certified Professionals

$111.11 /hr
1,159 hours

Oleg G.

Oleg G. Agency Contractor

Complex J2EE/Grails/Spring/Hibernate/Ajax solutions

Ukraine - Tests: 2 - Portfolio: 8

Decisive, results-focused and action-oriented professional with solid theoretical background, offering over 10+ years of hands-on experience in Information Technology. Experience gained across a large number of projects, services and technologies. Well developed inter-personal skills, motivation and team building, with an analytical and investigative approach to work. Capable of advising on current technology trends and solutions, managing the entire software development life-cycle and hardware infrastructure. Experience in: - web application architecture - cloud computing - DevOps - deployment and maintenance - continuous integration - agile software development methodologies - open source software - e-commerce - issue tracking and project management systems - database design - object-oriented and relational concepts - IaaS, SaaS - multithreaded applications - Linux administration

Groups: Sun Certified Professionals

$38.89 /hr
4,241 hours

Vaibhav Paliwal

Vaibhav Paliwal Agency Contractor

Java/JEE Architect Cum Developer

India - Tests: 11

Over the last 6 years, I have developed a wide range of web applications using J2EE, Struts 1.x HMTL, Hibernate, Spring, DHTML, Java Script, Ajax, Jasper Report, Maven, SQL Server 2005 and MySQL and Selenium for Automation, including web applications for Indian Government, Private Organizations, Educational Institute. My objective is to utilize my experience and extreme interest in computer science in producing high quality result for my clients or employer. Here are some comments that I got from my previous Upwork clients: It was a pleasure to work with Vaibhav. A very serious freelancer with a huge potential in java architectures. Despite job complexity, Vaibhav did the best to analyse stress tests results and make performance better. I definitely recommand him for futur work. Just need more linux administration knowledge and he will be perfect. Perfect communication, very trustworthy, did everything on time, very happy to have hired him. Vaibhav did an excellent job again. Highly recommended professional, very clean code! Highly recommended contractor. Excellent Java Developer. High quality. Vaibhav did an excellent job! I'll surely hire him again. Very commited to deadlines and code quality. Highly recommended professional Very knowledgeable, it was a pleasure working with Vaibhav. Had a very strict deadline and managed to meet it. Produced work without needing anything apart from provided details from me. Vaibhav was a solid contributor - willing to take on additional responsibility. Technically sound and willing to learn new technologies.Would be happy to hire again. Very good developer. Excellent job Vaibhav FIVE STAR JAVA PROGRAMMER.Excellent competency and skills for the job, understanding of specifications/instructions.

Groups: Oracle Certified Professionals, Sun Certified Professionals

$35.00 /hr
3,253 hours

Ravi V.

Ravi V. Agency Contractor

CTO | Project Manager | Expert : .Net 3.0, 3.5, Joomla, ILance, WP

India - Tests: 11 - Portfolio: 6

I have more than 10 years of experience in IT field. In these years, I have worked in many fields including corporate trainer, faculty, developer, TL, Project manager, Tech Lead etc. Working in these all fields, I gained a lot of experience in development, designing and project planning. I have also good experience with project management. Being SCJP, I have good experience with Java, ASP.Net, PHP, MVC Framework, WordPress, MS SQL, Oracle, MySQL, CSS, HTML, XHTML, HTML5, CSS3, Responsive designs, Bootstrap etc.

Groups: Sun Certified Professionals

$16.67 /hr
8,269 hours

Michael S.

Michael S.

NetSuite Certified ERP Consultant, Administor, SuiteCloud Developer

Canada - Tests: 4 - Portfolio: 2

I have passed the following NetSuite Certification Exams: 1. NetSuite SuiteFoundation Exam 2. NetSuite ERP Consultant Exam 2. NetSuite SuiteCloud Developer Exam 3. NetSuite Administrator Exam For the past 9 years, I have helped several businesses customize Netsuite to fit their business needs. I have extensive experience in using Netsuite's SuiteCloud platform and would be very eager to work on challenging projects that would involve customizing and developing solutions for clients who are using this software suite.

Groups: Sun Certified Professionals

$94.44 /hr
1,240 hours

Alastair A.

Developer / Integrator / Administrator - Ruby, Rails - MSc, MCSD

United Kingdom - Tests: 2 - Portfolio: 4

I have developed and supported a wide range of systems, from business components for global financial corporations through to small websites and systems for small companies, using Javascript, Ruby, PHP, C#, Visual Basic, SQL Server, Access, and QuickBase. My core competency lies in helping to determine and create the appropriate system according to requirements. Experienced in the following areas: HTML, CSS, HAML, SASS, REST, Javascript, UML, Linux, Mac, Google Apps, Single-sign on (SSO), Joyent, Slicehost. Microsoft Certified Solution Developer (MCSD) and Sun Certified Java Programmer.

Groups: salesforce.com, Sun Certified Professionals

$55.56 /hr
319 hours

Satyanarayan Y.

Satyanarayan Y.

Expert Java/J2EE/Android Developer

India - Tests: 12 - Portfolio: 5

I have over 7+ years of work experience in Software Development Industry. ✔ Language:- Core Java, Advance Java, PHP ✔ Web Technologies:- Spring Framework, Spring MVC, JSP, Servlet, Struts, JSF, PrimeFaces, Hibernate, JPA, EJB, JDBC ✔ Web Services: REST API with Spring MVC, Java RESTful Web-Services with Jersey API, JAX-WS, JAX-RS, SOAP. ✔ Scripting Language:- HTML, JSTL, Java Script, Ajax, JQuery, CSS. ✔ Database:- MySQL, PostgreSQL. ✔ Web Server:- Tomcat, JBoss. ✔ Version Management Tools:- Visual Source Safe, SVN, Git. ✔ Development IDE:- Eclipse, Net Bean, Intell iJ. I have involved in wide range of website development using JSP, Servlet, Struts 2.x, JSF, Spring, Hibernate, RichFaces, PrimeFaces, JPA, EJB, Ajax, JQuery, Java Script, HTML, CSS and so on.. I am holding Sun Certified Java Programmer(SCJP) certificate. My core competencies lie in complete end-to-end development of any size application right from app development to DB design. Proven ability to develop multiple projects with medium to high complexity. Commitment to Quality work and on-time delivery. Our motive is to help customers to achieve their business objectives by providing innovative, best-in class IT solutions and services, which correspond to client's requirements for 100% or bit more...

Groups: Crossrider, Sun Certified Professionals

$16.00 /hr
2,390 hours

Nuwan P.

Nuwan P.

Expert Java/J2EE/Flex/Spring/Hibernate/OpenEdge/4GL Engineer/Tech Lead

Sri Lanka - Tests: 8 - Portfolio: 5

Technically competent IT professional with 15 years of global IT industry experience in developing enterprise level applications using latest technologies for banking and finance, telco and health care industry. Proven leadership skills in managing,developing and motivating teams to achieve their objectives; Ability to work on own initiative and as part of a team while dedicating to maintain high quality standards with solid analytical, design and problem solving skills. I have good experience with following technical skills; Programming Languages : Java, Flex, ActionScript, Android, Progress OpenEdge, HTML, JavaScript, PHP Frameworks : Struts, Spring, Hibernate, JPA, Cairngorm, BlazeDS, GraniteDS, ZK Methodologies : Agile, OOAD (Object-Oriented Analysis and Design) Databases : Oracle, MySQL, PostgreSQL, Progress, OpenEdge Middleware : Apache Tomcat, Jboss, Weblogic, SpringSource TC Server, Progress AppServer, Progress Webspeed, SonicMQ, ActiveMQ Operating Systems : Windows, Linux, AIX Tools : Eclipse, Flex Builder, Netbeans, SpringSource TS, JUnit, Ant, Maven, CVS, Sub Version, TeamCity, Cruisecontrol, Hudson All those skills and experience build competent to building an application which meet your requirements and deadlines.

Groups: Intuit Partner Platform Flex Developers, Sun Certified Professionals

$25.00 /hr
1,146 hours