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Andrey Melentyev, Java Developer in Saint Petersburg, Russia
Andrey Melentyev

Java Developer in Saint Petersburg, Russia

Member since October 12, 2012
Andrey specializes in the design and development of large-scale systems using Java EE, Scala/Play, and Node.js. He has worked for clients in the telecommunications, insurance, and finance industries. He is familiar with software development methodologies and SDLC fundamentals. He is comfortable leading projects from the gathering of requirements to deployment of the product.
Andrey is now available for hire

Portfolio

Experience

  • Java, 7 years
  • Object-oriented Programming (OOP), 6 years
  • SQL, 6 years
  • Scala, 3 years
  • Play Framework, 2 years
  • Functional Programming, 2 years
  • Node.js, 1 year
  • R, 1 year
Saint Petersburg, Russia

Availability

Part-time

Preferred Environment

OS X, IntelliJ IDEA, Git

The most amazing...

...thing I've created is a REST service in Java for simplified risk analysis for decision making purposes.

Employment

  • System Architect

    2014 - 2014
    Return on Intelligence
    • Worked with business analysts to create an insurance claims data model.
    • Took part in exploratory data analysis of the insurance company's claims data.
    • Developed HANA calculation views with claimant demographics info, diagnosis, and treatment bill amounts.
    • Developed an algorithm with R to predict the bill amount based on claimant demographics and diagnosis.
    • Developed an algorithm with PAL to predict the bill amount based on claimant demographics and diagnosis. Compared performance to the R version.
    Technologies: SAP HANA, R, SAP PAL, SQLScript
  • Technical Architect

    2011 - 2014
    Deutsche Bank London
    • Restored and supported high-level design documents.
    • Designed and developed system components.
    • Developed a number of internal standards on cross-system integration and web service contract design. Aimed standards to improve inter-operability based on industry best practices and relevant data models, including WS versioning, XSD schema design, and naming guidelines.
    • Implemented a framework for performance and stability testing in order to collect data on how the clustered application deployed to WebLogic behaves under heavy load conditions.
    • Ensured architectural consistency of systems in accordance to the bank's standards.
    • Developed ad hoc reports for business using R.
    Technologies: Sparx Enterprise Architect, Java, Scala, WebLogic, R, Activiti BPM, EJB3, JMS, Hibernate, CXF, Flex, SOAP/JMS, SOAP/HTTP, WSDL, XSD, WSS, WSA, TIBCO BW, Maven, Jenkins, JIRA
  • Software Engineer

    2008 - 2011
    T-Mobile Deutschland
    • Designed and implemented several new business processes for a customer self-service portal.
    • Performed cross-system integration with SOAP/HTTP web services.
    • Created and supported a library of custom JSF tags.
    • Supported quarterly production deployments.
    Technologies: JEE, Spring, Hibernate, EJB, JMS, SOAP, CXF, WebLogic, Oracle RDBMS, ClearCase, Checkstyle, FindBugs

Skills

  • Languages

    Java, UML, SQL, XSD, WSDL, XML, JavaScript, R, Scala
  • Libraries/APIs

    JMS, JAX-WS, JDBC, Node.js, JAX-RS, JTA
  • Tools

    Enterprise Architect, Maven, Git, IntelliJ IDEA, Eclipse IDE, Apache Ant, Jira, ClearCase, Mercurial, Subversion (SVN), Apache Tomcat, SBT, SoapUI
  • Paradigms

    SOA, Object-oriented Programming (OOP), Agile Software Development, Test-driven Development (TDD), Scrum, REST, Functional Programming, Service-oriented Architecture (SOA), Design Patterns
  • Platforms

    Java EE, SAP HANA
  • Frameworks

    JPA, Activiti BPM, JUnit, Spring, Akka, Play Framework, Spring MVC, Hibernate
  • Storage

    MongoDB, JSON, NoSQL, MySQL, Oracle 12c
  • Other

    Requirements & Specifications, EJB 3, WebLogic, Enterprise Integration Patterns (EIP), J2EE Design Patterns, SOAP, Software Development Lifecycle (SDLC)
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