Sergey Istomin

Minsk, Minsk Region, Belarus

Member since May 27, 2014

Sergey has over 6 years of experience in software design and development. His favorite languages are Java and Groovy. He enjoys developing multithreaded, concurrent, and high-load apps. He has worked on projects related to online betting, eCommerce, and producer-consumer applications.

Sergey is now available for hire

Hire Sergey

Portfolio

Bookmaker "Marathon"
Java, Spring, Apache Click, JDBC, Hibernate, Web Services, Hessian...
Scand
Java, Groovy, Grails, Solr, Spring, Hibernate, XML, XSLT, Liquibase, jUnit...
Scand
J2EE, Groovy, Grails, Spring, Hibernate, Spring MVC, JSF, XML, XSLT...

Experience

Java, 8 years
Spring, 6 years
JDBC, 5 years
Concurrent Programming, 5 years
Hibernate, 5 years
Spring MVC, 4 years
Groovy, 4 years
Grails, 4 years

Availability

Part-time

Preferred Environment

Windows, Linux, IDEA, Eclipse, Git, Mercurial, SVN

The most amazing...

...thing I've coded is a profiling system of the "bad" gamblers in an online betting system.

Employment

Development Lead
2013 - PRESENT
Bookmaker "Marathon"
- Developed a credit system for gamblers in the online betting system.
- Developed an offender profiling system for "bad" gamblers in the online betting system.
- Interviewed, checked, and taught new members of the team.
- Built the development process for the local team.
- Participated in the design of the architecture of different aspects of the application.
Technologies: Java, Spring, Apache Click, JDBC, Hibernate, Web Services, Hessian, JMS (various implementations), jUnit, jQuery, HTML, CSS, JavaScript, AJAX, Velocity, Quartz, Git, SVN, Ant, Ivy, Maven, Tomcat, Oracle
Team Lead
2011 - 2013
Scand
- Supported the full software development cycle by proposing ideas and making decisions.
- Specified requirements for the application. Analyzed and reviewed code, implemented features, and handled design.
- Developed the architecture of the application and managed the team using Scrum methodology for the product and Sprint backlog.
- Designed the architecture and developed the B2B online catalog based on Solr.
- Designed the architecture and developed the printed catalog.
- Designed the architecture and developed the digital asset.
- Created a management system for digital assets like images, PDFs, or files in other formats.
Technologies: Java, Groovy, Grails, Solr, Spring, Hibernate, XML, XSLT, Liquibase, jUnit, jQuery, HTML, CSS, JavaScript, AJAX, Velocity, Web Services, Mercurial, Maven, Tomcat
Software Engineer
2009 - 2011
Scand
- Created an import/export data workflow system.
- Built a customizable business workflow.
- Imported, exported, analyzed, merged, and checked data via XSL or Groovy scripts.
- Developed the product information manager for a large eCommerce solution.
Technologies: J2EE, Groovy, Grails, Spring, Hibernate, Spring MVC, JSF, XML, XSLT, Liquibase, jUnit, Prototype, Dojo, jQuery, HTML, CSS, JavaScript, AJAX, Velocity, Web Services, Mercurial, Maven, Tomcat
Junior Software Engineer
2008 - 2009
EPAM Systems
- Integrated Atlassian Confluence into internal EPAM systems via plug-ins.
Technologies: Java, Struts, Spring (IOC, AOP, Security), JSF, JPA (Toplink, Hibernate), XML, XSL, SQL, Oracle, MySQL, MS SQL, HTML, JavaScript, CSS, AJAX

Experience

Online betting system (Development)
http://marathonbet.com
The most popular online betting system in Eastern Europe.
Catalog with aggregated items (Development)
An online catalog system where users can find items on the internet and post them to the system with bookmarks. Users can also create wish lists and share them with friends.

Skills

Languages
Java, Groovy
Frameworks
Hibernate, Spring, JPA, Grails, Spring MVC, Spring JDBC, Spring Security, JUnit, Apache Axis, JavaServer Faces, Apache Struts, AngularJS, Apache Velocity, JSF
Libraries/APIs
JDBC, VK API, Google API, jQuery, jQuery UI, JMX, JMS, Quartz, JAX-RS, JAXB, Apache POI, MyBatis, JAX-WS
Tools
IntelliJ IDEA, Eclipse IDE, Apache Ant, Maven, Apache Tomcat, Ivy, Apache JMeter, Apache, Eclipse RCP
Platforms
Windows, Oracle, Amazon Web Services (AWS), AWS EC2, Linux
Storage
JSON, Microsoft SQL Server, H2, MySQL, NoSQL, InnoDB, MyISAM, PostgreSQL, MongoDB, AWS S3
Paradigms
Agile Software Development, Continuous Integration (CI), REST, Unit Testing, Test-driven Development (TDD), Iterative programming, Spiral development, Scrum, Concurrent Programming
Other
Hessian

Education

Bachelor's degree in Computer Science and Artificial Intelligence
2005 - 2010
Belarusian State University of Informatics and Radioelectronics - Minsk, Belarus

To view more profiles, join ToptalJoin Toptal

I really like this profile

Share it with others

0shares