Oleksandr Kravets

Senior Backend Developer (Java, Go)

• Location: Ukraine, Kharkiv (Temporary in Kremenchuk)
• LinkedIn: akravets84
• Mobile: +380686030869
• Telegram: @akravets84
• Email: a.kravets84@gmail.com

Skills

• OS: macOS, Linux, FreeBSD, Windows
• Programming languages: Java, Go, Lua, C, JavaScript, SQL.
• Libraries: JSP, Servlets, EJB, JDBC, JAXP, JAXB, JPA, Spring, Guice, Camel, Apache Commons, Guava, Gson, Jackson, JAX-RS, JMS, JUnit, Mockito, AssertJ, OpenFeign, SLF4J, Logback.
• Frameworks and runtimes: Dropwizard, Tomcat, JBoss/WildFly.
• DBMS: MySQL, PostgreSQL, Oracle, HSQLDB, H2, Cassandra, MongoDB, Netezza, Greenplum, MS SQL Server, Amazon Redshift, Snowflake.
• Tools: Maven, Gradle, Jenkins, SonarQube.
• Languages: English Upper-Intermediate.

Professional Experience

Intellias Ltd. (02.2020 – current)

Java Developer

• Internal applications for B2B retailer:
  • Stack: WildFly, MS SQL Server, MongoDB, PrimeFaces, JUnit, Mockito, Maven, Azure, Jenkins, SonarQube.
  • Responsibilities: Developed new features and performed refactoring.
• Services for a smart video surveillance provider:
  • Stack: AWS, Spring Boot, DynamoDB, S3, MQTT, GitHub, Harness, Splunk, Jenkins, JUnit, Mockito, Spock, Gradle.
  • Responsibilities: Developed new features and optimized service performance.
• Services for the telecommunication industry:
  • Stack: Dropwizard, Guice, Guava, Git/GitHub, JUnit 5, AssertJ, Mockito, Buildkite, SonarQube, Maven, Grafana, Prometheus, S3, DynamoDB, Lambda, RDS, ECS, SNS, SQS, CloudWatch, CloudFormation and other AWS services.
  • Responsibilities: Analyzed existing solutions, designed new microservices, and created technical design documents; migrated an existing Cassandra database to PostgreSQL; implemented microservices; extracted logic from the existing monolithic architecture; wrote comprehensive tests; performed code reviews and occasional troubleshooting.

Brightgrove Ltd. (05.2016 – 12.2019)

Java/Go Developer

• Data warehouse building solution:
  • Stack: Dropwizard, Guice, Guava, Git, PostgreSQL, JUnit, AssertJ, Mockito, ANTLR 4, Docker Swarm, Kubernetes, GitLab, Jenkins, Nexus, SonarQube, Nginx, Maven.
  • Responsibilities: Implemented microservices and tests.
• Product deployment command line tool:
  • Stack: Go, Cobra, Kubernetes API, Docker Swarm API.
  • Responsibilities: Implemented the tool from scratch.
• Advanced SQL editor with query catalog, scripting and sharing capability:
  • Stack: Dropwizard, Guice, Guava, JUnit 5, AssertJ, Mockito, ANTLR 4, Maven, GitLab, Jenkins, Nexus, SonarQube, MapStruct, Lombok, JSON-RPC, H2, Netezza, Greenplum, PostgreSQL, MS SQL Server, Amazon Redshift, Snowflake.
  • Responsibilities: Analyzed requirements, implemented business logic, wrote comprehensive tests, managed the database schema.

DataArt Inc. (05.2014 – 05.2016)

Java Developer

• Advertising trading platform:
  • Stack: EJB, JAX-RS, AngularJS, Cassandra, JBoss AS 7, OpenRTB.
  • Responsibilities: Analyzed requirements, implemented business logic, writing comprehensive tests, managing database schema.
• Trading system:
  • Stack: Spring, Spring MVC, GWT, JMS, Hibernate/JPA, PostgreSQL, JUnit, Mockito, Maven, Subversion, TeamCity.
  • Responsibilities: Extended existing functionality for trading new types of securities; implemented features for administrative application; wrote tests for new functionality.

Dev-Pro Inc. (02.2013 – 04.2014)

Java Developer

• Payment monitoring solution:
  • Stack: Apache CXF, Jackson, Camel, Spring, Spring Data MongoDB, Hibernate, MongoDB, MySQL, JUnit, Mockito, Maven, Hazelcast, Subversion, Git, Jenkins, SonarQube.
  • Responsibilities: Implemented a number of REST services; wrote tests for new services.

Inno-Web-Tech LLC. (11.2011 – 02.2013)

Java Developer

• Desktop application-questionnaire for healthcare organizations:
  • Stack: Swing, Hibernate, HSQLDB, MySQL, JasperReports, Ant.
  • Responsibilities: Implemented a number of tests for questionnaires using Swing, Hibernate, HSQLDB, MySQL.
• Web-application for reserving and managing weld IDs for the automotive industry:
  • Stack: JSF, IBM Db2, IBM WebSphere.
  • Responsibilities: Updated application security to prevent XSS and SQL-injection attacks.

Education

National aerospace university of N.E. Zhukovsky “KhAI” (2001 – 2006)

Specialist in Applied Mathematics

Additional Education

• Coursera: Functional Programming Principles in Scala
• Coursera: Algorithms

FAQ

Are you registered as an independent contractor (PE/ФОП)?
Yes, ФОП 3rd group.

Are you able to relocate?
Yes.

Do you have stable electricity and Internet during the war?
I have backup power and fiber optic internet. I can work through planned outages. A long complete blackout could still interrupt my connection.

What is your notice period?
2-6 weeks depending on agreement with current customer.