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Profileimage by Oleksandr Korzhenko Software Engineer, Java Developer from Icod

Oleksandr Korzhenko

Icod
available

Last update: 22.04.2025

Software Engineer, Java Developer

Graduation: Computer Science
Hourly-/Daily rates: show
Languages: English (Full Professional) | Spanish (Elementary)

Keywords

Backend Java (Programming Language) JavaScript (Programming Language) Amazon Web Services Automation Test Automation Microsoft Azure Business Requirements Cloud Computing Databases + 10 more keywords

Attachments

Oleksandr-Korzhenko-CV_220425.pdf

Skills

Experienced Software Developer | Backend Specialist
Seasoned software developer with over 15 years of experience in development, including 8 years in commercial Java development. My expertise lies in backend development, where I focus on building scalable, high-performance solutions.
I have worked extensively on commercial projects, utilizing the following technologies:
  • Backend Development: Java EE, Spring Framework
  • Databases: MS SQL, MySQL, PostgreSQL
  • Cloud & Infrastructure: Kubernetes, AWS, Microsoft Azure
  • CI/CD & Automation: Complex pipelines with GitLab, automated testing
  • Additional Technologies: Python, JavaScript, Go
I specialize in designing and developing efficient solutions tailored to business needs, ensuring high-quality support and long-term maintainability. Let’s build something great together!

Project history

07/2021 - 11/2024
Software Engineer, Backend Developer
HERE Technologies (Automotive and vehicle construction, 1000-5000 employees)
Developed and maintained a core service for map-making, location technologies, and automotive services. This microservices-based platform serves Apache Spark and Flink applications utilizing Kubernetes.
Key Responsibilities & Achievements:
  • Designed and implemented new API versions, ensuring backward compatibility.
  • Developed new microservices and supporting applications based on project requirements.
  • Refactored data structures while maintaining data integrity and compatibility.
  • Analyzed requirements, defined tasks, and created related technical documentation.
  • Worked extensively with Kubernetes (k8s) for deployment and management.
Technologies:
Java (8-17), Jersey, Scala, PostgreSQL, JUnit, Cucumber, OpenAPI, REST API, Git, distributed GitLab CI/CD, Python (Pandas), Kubernetes, Splunk, Go.
11/2020 - 06/2021
Software Engineer, Backend Developer
Major Ukrainian Telecom Operator (Internet and Information Technology, >10.000 employees)
Developed and supported a B2B application for the client's partners, enabling specific business functionalities (e.g., order management, reporting).
Key Responsibilities:
  • Backend development and feature implementation using Java and Spring Boot.
  • Database design and interaction (MySQL, Oracle).
  • API development and integration.
  • Collaboration on frontend integration (React Native/JS).
  • Maintenance and support of the application.
Technologies:
Java (8, 11), Spring Boot, Spring MVC, Spring Data, Spring Security, Hibernate, MySQL, Oracle DB, Scala, Gradle, REST API, Git, GitLab CI/CD, React Native, React JS.
11/2019 - 05/2020
Software Engineer, Java Backend Developer
Quince (Consumer goods and retail, 50-250 employees)
Developed a new e-learning platform for a major global electronics manufacturer.
Key Responsibilities & Achievements:
  • Collaborated on feature requirements, design, and implementation for the platform.
  • Designed and implemented a new reporting system using Google BigQuery, including data migration and consolidation from various sources.
  • Developed RESTful APIs and designed database schemas (MySQL, MongoDB/DocumentDB).
  • Architected and provisioned core AWS cloud infrastructure components (ECS, RDS, DocumentDB).
  • Established CI/CD pipelines using GitLab CI/CD to automate build, testing, and deployment processes.
  • Refactored existing code for improved performance and maintainability.
  • Implemented Single Sign-On (SSO) capabilities.
Technologies:
Java 8, Spring Boot (1.5.x), Spring MVC, Spring Data, Spring Security, Hibernate, MySQL, AWS RDS, MongoDB, Amazon DocumentDB, Google BigQuery, SSO, Gradle, AWS ECS, REST API, Git, GitLab CI/CD.

Certifications

Developing Applications with Google Cloud Platform
Coursera
2019
Architecting with Google Cloud Platform
Coursera
2019

Local Availability

Only available for remote work
Profileimage by Oleksandr Korzhenko Software Engineer, Java Developer from Icod Software Engineer, Java Developer
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