Worked on two T-Mobile major projects, development technology is Agile, with two-week Sprints, daily SCRUMs. Designed and developed REST APIs for billing and document requesting systems.OS: Linux, MacOSPlatforms/DBMS: Spring Boot, JPA, PostgreSQL, Liquibase, Kubernetes, Docker, Kafka StreamsLanguages: Java, SQLIDE/Building/Repo Tools: IntelliJ, GIT, Maven

Worked in the Virtual Agent Team, Development technology is Agile, with two week Sprints, daily SCRUMs. Designed and developed web services for Virtual Agent support. OS: Linux, MacOS Platforms/DBMS: Spring Boot, AWS, Docker, DynamoDB Languages: Java, Kotlin, Shell ScriptingIDE/Building/Repo Tools: IntelliJ, GIT

Worked in the Fulfillment Management Team, Development technology is Agile, with two week Sprints, daily SCRUMs, and regular retrospectives. Designed and developed Transactional Bridge - message processing system of general purpose that prepares messages for General Ledger. Developed a fulfillment messaging system that processed purchase orders.OS: Linux, MacOS Platforms/DBMS: AWS, Docker, Spring, DynamoDB Languages: Java, Shell ScriptingIDE/Building/Repo Tools: IntelliJ, GIT

Worked in the Universal Store Team, Development technology is Agile, with two week Sprints, daily SCRUMs, and regular retrospectives. Developed RESTful services for processing customer purchase orders.OS: Windows 10 Platforms/DBMS: .NET, Cosmos, AzureLanguages: C#, Power Shell IDE/Building/Repo Tools: Visual Studio, GIT

- Worked in the Video Demand Team, Development technology is Agile, with two week Sprints, daily SCRUMs, and regular retrospectives. - Developed server application that resolves in real time client requests for advertisement selection. High performance system with event-driven concurrency. - Developed API application serving business clients Web UI. Microservice architecture, JPA, Spring packages.OS: Linux, MacOS Platforms/DBMS: Tomcat, AWS, Docker, MySQL, OracleLanguages: C++, Scala, Java, SQL IDE/Building/Repo Tools: Eclipse, IntelliJ, GIT, Maven, Gerrit, Jenkins

Worked on contract at Amazon (eCommerce division):Worked in the General Ledger Message Processing Team, Financial Ledger & Accounting Systems Department. Development technology is Agile, with two week Sprints, daily SCRUMs, regular retrospectives. Developed and maintained system that converts business events into General Ledger records. Performed on-boarding of more than a dozen new business projects. OS: LinuxLanguages: Java IDE/Building/Repo Tools: Eclipse, Brazil, GIT, Apollo

Working on contract at Staples, IncWorking in the Search Team of Web Development Department. Development technology is Agile, with two week Sprints, daily SCRUMs, regular retrospectives, and JIRA as a supportive tool. Designing and developing Search Engine aggregating server that provides search functionality for Staples.com online shop. Web development framework is JSP. Server layer is built with Spring Integration, Hibernate, RESTful services and other Java frameworks. Platforms/DBMS: Tomcat, DB2, MongoDB.OS: iOS, LinuxLanguages: Java, javascript. IDE/Building/Repo Tools: Eclipse, Maven, GIT

Working on contract at Agilysys.Working in Hospitality Solutions Group. Development technology is Agile, with two week Sprints, daily SCRUMs, regular retrospectives, and JIRA as a supportive tool. Designing and developing Supplier onboarding and eProcurement solution. Web development framework is Wicket complemented by extensive use of Javascript libraries (JQuery, TableData, tinyMCE, various graphic libraries) and Bootstrap framework. Server layer is built with Hibernate, Lucene indexing, Quartz scheduling, Java multithreading, RESTful services and other Java frameworks. Platforms/DBMS: Jetty, SQL Server, Lucene.OS: Windows 7Languages: Java, SQL, javascript. IDE/Building/Repo Tools: NetBeans, Maven, GIT

Worked in Commercial Software development division.Designed and developed Traffic Data Aggregating server using wide variety of Java technologies (Wicket, Spring, Jersey, JPA, XML, JDBC, multithreading), PostgreSQL, Terracotta data sharing server, and RESTful web services. Designed and developed Traffic Notification server that provides real-time traffic information to smartphone based navigational application.Platforms/DBMS: Jetty, PostgreSQL.OS: Windows XP, LinuxLanguages: Java, SQL. IDE/ Building/Repo Tools: Eclipse, Maven, Perforce/Subversion

Working on contract at BoeingDeveloped Cabin Systems Loadable Software Web applications using wide variety of Java technologies (Spring, Hibernate, XML, JDBC) and Oracle SQL.

• Provided maintenance, support, and development for Aggregating and Billing Application server using wide variety of Java technologies (Spring, Hibernate, EJB, JSP/Servlets, XML, SOAP, JMX, JDBC) and SQL. • Communications of Aggregating system with partners are performed through variety of web service approaches including Restful services and SOAP.

• Provided maintenance, support, and development for Billing Web applications (online billing for wireless customers) using wide variety of Java technologies (EJB, JSP/Servlets, Struts, XML, SOAP, Spring, Hibernate), C, and SQL. • Developed Application server with EJB technology and with extensive use of XML in messaging requests to billing core engine.