Oleksandr Korzhenko

Software Engineer, Java Backend Developer

Quince

One of the biggest Telecom operator in Ukraine. Develop and support B2B application for customer partners.

Software Engineer, Java Backend Developer

Quince

e-Learning project for worldwide electronic manufacturer
I was involved in the development of a new project for a worldwide electronics manufacturer. I had different responsibilities in this project. Discuss and add/modification features, refactor code. Implement new reports on the Google platform with migration data from multiple sources and accumulate data for reports. Develop REST API and database structure. Develop and setup a new AWS cloud infrastructure. Setup a new CI/CD pipelines.

Software Engineer, Java Backend Developer

DashDevs Ltd

Participation in the projects:

• Cigarette manufacturer

  Technologies stack:
  Java 8, Spring boot (1.5.9), Spring MVC, Spring Data, Spring Security, Spring Security, Hibernate,v Liquibase, PostgreSQL, AWS RDS, Azure databases, Gradle, ELK, REST API, JHipster, AWS s3 bucket, Azure Blob

• Bolt Scooter Rental in Miami (https://www.bolt.miami) - platform for renting and tracing the scooters in the USA.

  Technologies stack:
  Java 8/12, JDBC, Liquibase, MySQL, Maven, WebSockets (Jetty and Netty), AWS, Docker, Git, Jenkins

• ePrintIt (http://www.eprintit.com) - cloud printing for the USA, India, Malaysia.

  Technologies stack:
  Java 8, .NET, REST API, Spring MVC, Spring Security, Spring Data, Azure Blob Storage, Azure Cloud, MySQL, MS SQL, JDBC, Microsoft Migration Tool

• Europe's leading public WiFi provider.
  

  With 45.000 Wifi access points, Europe´s largest public Wifi network. Customers include large hotel chains, health institutions, restaurants and retail locations.

  Technologies stack:
  Java 8, Spring Boot, Spring MVC, Spring Security, PostgreSQL, Spring Data, Liquibase, Hibernate, Gradle, REST API, JHipster, AWS S3 Bucket, AWS RDS, AWS EC2

and other smaller projects.

Software Engineer

AST-International Environment

development of a warehouse management system;
developed a mobile application: client for a warehouse management system;
integration with EGAIS and mobile applications;
team-based development of ETL (data migration) system with XPath for SQL;
implementing communication with the mobile warehouse app via REST;
development of server-side REST API;
development of new data dictionaries, printed forms, reports;

1C Enterprise 8.2 programmer

Cristall-Lef

developed custom configuration for acquiring merchandiser/marketing info based on 1C 8.2 and SQL queries. Key technology points of the new system:
the use of managed forms,
multiple integration points with DBMSs of various platforms,
palm PC integration with the use of 'Optimum' subsystem,
integration with 'Parsec' security access system,
integration with the Directum document automation system.
technical support, development & modification of production systems based on 1C:Accounting 7.7, 1C:Salary&HR 7.7, 1C:Automotive 8.1, 1C:Real estate 8.1.

Head of IT department, 1C 8 Enterprise programmer

"SANTAN" Ltd

FMCG management of 3 subordinates; customization & roll-out of 1C Enterprise Trade management v8.0 system;
development for remote DB replication;
complex setup of user access rights;
implementing new reports, documents, registries;
migration from 1C Accounting (Ukraine) v7.7 to 1C Enterprise Accounting v8.1; roll-out of 1C v8.1 Salary & HR; set up & tuning of MS SQL, Postgre SQL; direct SQL querying to 1C DBMS.