Top Upwork Freelancers

Clear all filters

Roger Paes

Roger Paes

Expert Java web developer (10+ years) SCJP/SCWCD

Canada - Tests: 3

I'm a Java developer with 10+ years of experience in the J2EE platform, having developed a wide range of web applications(frontend/backend) using the following tools and technologies: Spring 3, Angular JS, Struts, WAS, Oracle, Tomcat, Extjs, Mysql, EJB, JSP, UML, Design patterns, SQL, Hibernate, JSF, Eclipse, Maven, RTC, web services, JMS, etc. I'm seeking opportunities to build java applications from end-to-end.

Groups: Sun Certified Professionals

$16.67 /hr
0 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
2,394 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

Afzal A.

Afzal A. Agency Contractor

Wordpress Expert, SEO Specialist, Web Designer HTML, UpWork Certified

United Arab Emirates - Tests: 15 - Portfolio: 35

I have over 07 years of experience in Web Programming, Blog Programming, WordPress installation, WordPress Customization, WordPress Configuration. PHP, Programming, Logo Designing, CSS/HTML and SEO.... Services includes: WEBSITE: Wireframe (Balsamiq), Design (PSD), Authoring (HTML / CSS), Development (PHP), Search Engine Optimization (SEO, SEM, SMO) and Email Marketing Campaign. B2B and B2C Web Solutions (Word Press, Joomla, OSCommerce, Drupal, CodeIgnitor etc.) Online Payment Gateway Integration (Pay Pal, USA ePay, World Pay, Sage Pay etc.) <strong>Search Engine Optimization</strong> I have worked with top companies like Limos.com, CreativeOn, Amazon, About.com, etc. - ON-Page SEO (Google Analytics, Webamsters tools, Adsense, Adwords, - Google Panda, Link Wheel, White Hat, Google Maps, Google Directory) - OFF-Page SEO (Link Building) - Wordpress Expert, WP Designer and WP Developer - Audio / video maker and marketing - Facebook Fanpage, Twitter page and Youtube page Design

Groups: Article Samurai, BigCommerce...

$10.00 /hr
10,478 hours

Vineet J.

Vineet J. Agency Contractor

Big Data Lead Hadoop Developer

United States - Tests: 5

Over 15 years of experience in BigData/Java Stack as Manager/Architect, a collaborative engineering professional with substantial designing and executing solutions for complex business problems involving large scale data warehousing, real-time analytics and reporting solutions. Known for using the right tools when and where they make sense and creating an intuitive architecture that helps organizations effectively and process terabytes of structured and unstructured data. Data Warehousing Proven history of building large-scale data processing systems and serving as an expert in data warehousing solutions while working with a variety of database technologies. Experience architecting highly scalable, distributed systems using different open source tools as well as designing and optimizing large, multi-terabyte data warehouses. Able to integrate state-of-the-art Big Data technologies into the overall architecture and lead a team of developers through the construction, testing and implementation phase. Databases and Tools: MySQL, MS SQL Server, Oracle, DB2, NoSQL: HBase, MongoDB, Cassandra, HDFS Data Analysis Consulted with business partners and made recommendations to improve the effectiveness of Big Data systems, descriptive analytics systems, and prescriptive analytics systems. Integrated new tools and developed technology frameworks/prototypes to accelerate the data integration process. Tools: Hive, Pig and Hadoop Streaming, MapReduce, YARN, Bedrock, Kafka, Apache Spark Data Transformation Experience designing, reviewing, implementing and optimizing data transformation processes in the Hadoop and ETL ecosystems. Able to consolidate, validate and cleanse data from a vast range of sources – from applications and databases to files and Web services. Tools: Tivoli, Custom Core Framework and Scripting; Linux/UNIX Commands. Data Collection Capable of extracting data from an existing database, Web sources or APIs. Experience designing and implementing fast and efficient data acquisition using Big Data processing techniques and tools. Tools: APIs and SDKs, RESTful Interfaces. Knowledge of Apache Spark, Storm, Apache Kafka and Amazon EC2. Hands on experience on installing, configuring Hadoop Cluster of Apache Hadoop distribution; with knowledge of Apache Lucene, Map R, Splunk, Mahout Tools. Instrumental in architecture of data warehouses, OLTP and OLAP solutions. Strong track record in Enterprise IT systems, JEE frameworks and SOA design patterns for building stable and scalable systems. Capable of processing large sets of structured, semi-structured and unstructured data and support system application architecture. Extensive experience in Software SDLC and Agile processes, managed cross geography location scrum teams (up to 40 members) with producing high quality end to end development and delivery with [On/Off]shore model. Experience in HealthCare, Financial, Banking and Manufacturing domains. Extensive experience in OOAD, UML, JEE and Core Java design patterns.

Groups: Sun Certified Professionals

$60.00 /hr
765 hours

Nidhi B.

Nidhi B. Agency Contractor

J2EE, API, web-development and designing, DB and CRM

India - Tests: 9 - Portfolio: 16

Over 7 years I have work in web-development, web-designing, Database and CRMs. I am seeking opportunities to work on anything related to my skills in websites and CRMs from the ground up for you or your business. Web-development/App-development Skills: - Java - Core Java, J2EE, - JDBC, JAXP, JAXB, JSP, JSTL, Servlets, - XML, XSL, XSLT, XPath, XSD,JAXB,REST, SOAP - Web Services, JAX-RPC, - Struts, Quartz, - Netbeans Web-designing skills / Front-end designing: -HTML5, CSS3, DOM, bootstrap, angular.js, Jquery, JavaScript, Ajax DataBase - OOPs, TOAD, MySql, Sql, Pl/SQL, MS-Access CRM and other related tools: -Zoho CRM -Zoho Creator -Zoho Projects -Salesforce.com -MailChimp.com -ConstantContact.com Other: - bug fixing, -cryptography in javaScript and Java - Regular expressions in JavaScript and Java -CVS Tools -Maven,ANT,Junit, -TeamViewer -Testing Good and genuine employer (who pay for work ) are only welcomed. Delivery of quality work and employer satisfaction with work quality are my grantee.

Groups: Sun Certified Professionals

$11.30 /hr
406 hours

Vishal T.

Vishal T.

PHP/MobileApp/Jquery/AJAX/Mysql expert with 7+yr Exp.

India - Tests: 19 - Portfolio: 8

I am an advanced level PHP, Java, Mobile App developer with over 7 years commercial experience. As a full time freelancer I am available for any job, large or small. I am used to working within tight timescales and provide excellent results every time and within budget. I have excellent communication skills and will endeavor to keep you in touch with every aspect of the development process. I have also established a reputation for thinking 'outside the box', so am more than willing to contribute ideas to your project if I can identify areas where functionality or commercial return can be improved. I have extensive knowledge working with Android & IOS applicationsand full working knowledge of client side languages and libraries including Javascript AJAX and jQuery and additional technologies such as SOAP, REST, XML and JSON. I also have a good working knowledge of JSP and Tomcat. I am used to working with 3rd party APIs including Twitter, Facebook and LinkedIn, together with the Google Map API, other Google APIs and ecommerce APIs such as Paypal, Google Checkout, SagePay, Worldpay and Ogone. I have worked on a number of e-commerce platforms including Magento, Virtuemart, Paypal and Google Checkout, ATG I have a good knowledge of HTML and CSS. I have worked with Wordpress and provided custom modifications to Wordpress websites. I have also worked on interfaces to SMS applications. I also have extensive experience with SEO and my clients regularly feature 'first page' on the major search engines. Please have a look at my profile for a selection of items from my portfolio.

Groups: Sun Certified Professionals

$22.22 /hr
181 hours

Nauman A.

Nauman A.

Software Architect - J2EE, REST, NoSQL, Big Data, Cloud Computing

Germany - Tests: 8 - Portfolio: 2

Confident Software Savvy with 12+ years of proven experience in software development, design and implementation of distributed systems using Java and JEE with Object Oriented Analysis and Design.

Groups: Sun Certified Professionals

$100.00 /hr
1,553 hours

Dhandapani K.

12 yrs of exp in Java,MySQL,JFreeChart,Jasper Report,Struts,NMS/EMS

India - Portfolio: 5

Around 12 yrs of strong experience in design, development, testing, reporting using Java, JSP/HTML, Web Services, MySQL(Schema design & Performance Optimization), MSSQL, Oracle, Sybase, JFreeChart, Jasper Report. Hands on experience in AdventNet based Network/Element Management Software using Java, RMI, Swing, MySQL, Oracle, MSSQL, Sybase, SNMP and RADIUS. Strong experience in database design and performance optimization. Experienced in reporting (JFreechart and Jasper Report) tools & MySQL schema design and Performance Optimization.

Groups: Sun Certified Professionals

$20.00 /hr
2,816 hours