https://www.upwork.com/freelancers/~0149f54ce7bfc21677

Development social network for european market. Technologies: Scala, Play, PostgreSQL, Slick, ElasticSearch, AngularJS, Rx frameworks

Development data analysis engine (Big-Data project) that can extract data from any source (web, email, facebook, etc.) then do some analysis and then provide end-users some analytical information about the gathered data. Technologies: Hadoop, HBase, Amazon AWS

Working with network product leader to develop cluster components for network management system. My responsibilities: mentoring less experienced engineers, performance optimizations, looking after the team to go ahead for task implementation, scrum master, making technical decisions for implementation some of the tasks and prove them to the lead developer on the customer side. I examined the codebase to plan performance optimizations and refactorings. Codebase is more than 3 million LOC Java and Javascript code. Technologies: Spring, Hibernate, REST, Tomcat, JasperReports, Oracle, GitWorking with Spirent to develop iLO and iTest. Performance optimizations. Architectural design and implementation of the network topology editor as a web-service (selecting technologies, defining API, planning integration with iLO and iTest, propose and prove decisions to product managers on the customer side). Technologies: JBoss AS, J2EE, HTML5 canvas, JavaScript, Hibernate, PostgreSQL, Tapestry 5, Mecrurial

Created statistic engine (aggregating, analyzing and viewing modules) and integrated it to all products of the company. Technologies: Wicket, Tomcat, MongoDB, Spring.Developed prototype of a game using Play! Framework and PostgreSQL.

Project: aggregator of the payment documents from any payment system (VISA, some of the inner banking systems) to exchange them through these systems and manage appropriate bank accounts. I mentored 2 junior developers, interviewed applicants, reviewed commits. I was looking after architectural design of the system. I was looking after team velocity and optimized processes in it (introduced JRebel, one-click build, local database, simplified architectural design of the system). I maintained inner documentation of the project (architecture «in pictures», How-To’s, infrastructure).Technologies: JSF2 (Mojarra, Primefaces), Spring (DI, AOP, Security, Integration), AspectJ, JasperReports, Hibernate, Oracle (PL/SQL), WebLogic, Maven, SVN, Hudson/TeamCityModule for ranking and blacklisting payment documents of the suspicious persons using fuzzy logic algorithms and LuceneCRUD application from scratch using Tomcat, Vaadin and EclipseLink

Automation of the banking processes for the its staff (frontend) to easily provide services to customers: managing client information and accounts, taking credits, mortgages, etc. I optimized performance of the critical parts of the system, solved strange issues related to the multi-threaded environment, have done lots of the assignments. I improved integration SymmetricDS with H2 database that memory usage decreased by 3 times and performance was improved. Created patch Technologies: Eclipse RCP, SWT, EJB 3.0, Hibernate, Oracle, H2, Geronimo, Glassfish, WebSphere, Maven, SVNAnalytic engine to analyze and calculate any what the clients want. Solution provides specific language that clients use to write the formulas and integration with databases to export schema to build DSL-like extension to this language. I developed integration with databases through JDBC and added new elements to the language. Technologies: Java SE, Oracle (embedded Java, PL/SQL)Document management system (FIS Forms) with Microsoft Word integration. Customers may create template of the document in the Word with some placeholders that FIS Forms manages during creation of the result document. Some of the placeholders fills automatically (e.g. client and bank information - name, BIC, accounts, etc.), some through standalone application by hand inputs. I developed from scratch most of the codebase. Technologies: Eclipse RCP, SWT, OLE Automation

Development of a portal ( http://tisnso.ru/ ) provided social government services online for citizens of Novosibirsk region. Bugfixing, developing some modules. There was nothing interesting. Technologies: Java SE. Tomcat, SVN