John K. Email & Phone Number

Frankfurt, He, De

Khimki

Mobile cachier* Completely rewrote CI/CD, added service testing phase and testcontainers, changed CI startup from commit to tag, fixed a error that had been plaguing the team for a long time.* Created new microservices, configured CI, described docker file, created services in container manager, configured security.* With the team, refactored an important part of the project and migrated from Rest to Kafka.* Created a common contract for responses to rest errors, which helped to… Show more Mobile cachier* Completely rewrote CI/CD, added service testing phase and testcontainers, changed CI startup from commit to tag, fixed a error that had been plaguing the team for a long time.* Created new microservices, configured CI, described docker file, created services in container manager, configured security.* With the team, refactored an important part of the project and migrated from Rest to Kafka.* Created a common contract for responses to rest errors, which helped to customize auto-testing, reduce repetitive code, and simplify handling of new errors.Stack:Kotlin, Spring (Web, Security, AOP, JPA, Cloud), Postgresql, MySql, Kafka, Liquibase, Testcontainers, JUnit, Mockito, Gradle, Docker, Docker Swarm Show less

Perm

Public Procurement Optimized bottlenecks in the application Code review colleagues Refactored large code sections Created reports via Apache POI Created and ran documents through the status model Created validations to keep documents in a consistent statestack: Java (11,17) Spring (Boot, MVC, AOP, Security), OpenAPI, Kafka, Liquibase, JOOQ, Apache POI,PostgreSQL

Stockholm

Matilda - Online food delivery service - Implemented full-text search via ElasticSearch to find meals and restaurants - Implemented MapBox service for route planning for couriers - Together with the team, broke the project into modules and did a complete refactoring of the project - Conducted code reviews with colleagues - Interviewed new employees - Maintained APIs for administrators, customers, couriers and chefs - Increased project test… Show more Matilda - Online food delivery service - Implemented full-text search via ElasticSearch to find meals and restaurants - Implemented MapBox service for route planning for couriers - Together with the team, broke the project into modules and did a complete refactoring of the project - Conducted code reviews with colleagues - Interviewed new employees - Maintained APIs for administrators, customers, couriers and chefs - Increased project test coverage from 0% to 80%Stack: Java (11,17) Spring (Boot, Data JPA, Data ElasticSearch, MVC, AOP, Security), Hibernate, ElasticSearch, MySQL, JUnit, Mockito, Liquibase, Mapstruct Show less

Krasnodar

Electronic workflow Created/edited electronic document management forms Created reports using native SQL and JasperReports templateizer Implemented auditing for logging user actions Implemented electronic signature CryptoPro Made minor front-end edits (CSS and JavaScript)Stack: Java 8, PostgreSQL, Spring Core, Alfresco, JasperReports, Solr, Jenkins, Junit