Oleksandr Tarasenko

Project for Major Global Financial Institution to gather information about legal entities(KYC) and sign documents * SpringBoot upgrade from version 2.7.18 to 3.5.6 * Migrate application from Bitbucket to GitHub * Migrate application from Jenkins CI to Light Speed Enterprise CI(based on Tekton CI) * Migrate application deployment from uDeploy to Light Speed Enterprise + Harness

* Enhanced and maintained declarative ETL project which generate Apache Beam pipelines from user defined JSON/HOCON configurations. * Provided production support for large-scale streaming and batch Apache Beam pipelines, processing high volumes of data daily from diverse sources and delivering to a variety of sinks * Implemented a cost-saving solution for idle Dataflow streaming jobs, which is enabled in testing and staging environments. In 2 testing environments this functionality saved 10 000 USD per mont

* Designed and implemented miscroservices based OCR solution for extracting users data from different kind of forms which come into system as images, PDF files... * Designed DB schema

* Developed and maintained the Linkdex SEO platform for professional marketers * Led a 4-member team, ensuring efficient project delivery and high-quality code. * Architected and implemented system components, ensuring scalability and performance. * Collaborated with England-based customers to define requirements and design solutions. * Successfully migrated a Cassandra cluster from Thrift to CQL * Provided support, bug fixes, and integrated new features. * Configured and maintained TeamCity, Upsource, and

* Developed and maintained IT Service management software within a large, 30+ member team. * Collaborated with United States-based customers to define requirements and design architectural solutions. * Led a 5-member Scrum team, implementing and managing the Scrum process. * Researched and implemented infrastructure for REST web services and a dynamic DAO layer, which support dynamic table and columns creation. * Developed infrastructure and base implementations for Web, Server, and DAO layer tests. * Confi

* Worked in a 5-member Scrum team, contributing to the design and implementation of Java web applications for customer details collection and search. * Designed and implemented Java web-based application which provide a possibility to collect customer details, distribute contact details and offer promotions over SMS and PC-based channels * Developed Java web-based applications which provide a possibility do search of information about different IT companies * Developed a Java Swing application for document

* Developed and supported features for a social network application, including cross-functional search. * Participated in technology stack migration to improve an online business network. Tech Stack: Java, JSP, Servlets, Tomcat, Oracle Database, Apache Ant, Subversion

* Developed and supported features for Java web applications. * Analyzed and optimized system performance. * Developed SOAP-based services for communication between Java and Delphi applications. * Supported and transformed XML data using XSLT. * Refactored code and migrated to a new technology stack. Tech Stack: Java, JSP, Servlets, SOAP, Tomcat, JBOSS, MS SQL DB

* Developed and supported Java and Delphi applications. * Developed a Delphi application for dynamic student search and data collection. * Developed a Java web application for generating marketing reports.