Stanislav Demchenko

Worked in a team of 4-6 senior engineers to develop CRM subsystem of a SaaS system, representing multi-tenant online casinos hosted in GCP. All microservices used the latest Java and Spring versions and communicated via Kafka / Protobuf. All data was stored in PostgreSQL and accessed using Ebean ORM. Some data was cached in Redis. Unit tests: JUnit and Mockito. Tools: BitBucket, Docker, Kibana, Grafana, Sentry, Jenkins, Lens, Argo CD.

Worked in teams of 2-6 developers to create and maintain tens of microservices. Most microservices were developed with Java, Spring Boot, and Kafka, communicated via REST or GraphQL, deployed on-premises. Wrote Terraform scripts to deploy some microservices to AWS. Automated testing with JUnit, TestNG, Mockito, Groovy, Spock, Selenium, JMeter, WireMock. Tools: Jenkins, Jetty, Tomcat, Docker, DataDog, Micrometer, Prometheus, Grafana, Graylog, Sumo Logic, AppDynamics, GitHub, Stash, Phabricator.

Collaborated with 4 senior developers and a manual QA to develop from scratch to production two web applications: - a front-end system for administration of workflows for data reloading, deployment and so on. - a middle-office system for tracking workloads. Technologies used: Java 7/8, Spring, Spring MVC, RESTful services, MongoDB, Neo4j, Vaadin, JQuery, Guava, Groovy. A corporate Subversion was used for version control.

A destination management ERP system for global travel agency Kuoni (participated in development from scratch to production). Microservices in Java 7, Oracle, H2, JPA (Hibernate), Spring, Junit, Mockito, Maven, Selenium, Puppet, Liquibase, Selenium, Tomcat, AccuRev.

A Nuxeo-based ECM. Java 6, PostgreSQL, JUnit, Solr, Jakarta Commons, REST (Jersey + Json), Nuxeo, Maven, Tomcat, Python, bash.

An audio/video conferencing application for Avistar. Java 6, JEE5, JPA (Hibernate, OpenJPA), JUnit, JMockit, Jakarta Commons, Slf4j, Log4j, Ant, DB2, Derby, MS SQL Server, WebSphere, Tomcat.