Олексій

OLEKSII HAIDABRUS
Senior Java Developer
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) LinkedIn: Oleksii Haidabrus Kyiv

SUMMARY SKILLS
Senior Software Engineer with 5 years of commercial experience Programming Languages
developing enterprise web applications, specializing in backend
Java, Kotlin, TypeScript, Groovy, C,
development with Java and the Spring ecosystem. I also have experience
in frontend development, DevOps, and AI-powered application
HTML/CSS/JS
development.
I have designed and delivered scalable features, modernized legacy Technologies
systems, optimized performance, and contributed to architectural Kafka, Kafka Connect, Apache Avro, Redis,
decisions across multiple enterprise projects. I also mentored engineers Pub/Sub, RabbitMQ, Nginx, Dataflow,
and conducted technical webinars at SoftServe Academy. Debezium, Elasticsearch
Passionate about continuous learning, I recently started designing AI-
powered solutions using Microsoft Copilot Studio and Azure AI Foundry CI/CD Tools
while leveraging AI-assisted development tools to accelerate software
delivery and improve code quality. Docker, Docker-Compose, GitHub Actions,
GitLab CI, Jenkins, Kubernetes, Bash, Linux

EXPERIENCE Tools/Libraries
Software Developer Maven, Gradle, NPM, Liquibase, Flyway,
SoftServe Swagger
01/2022 - Present Sumy - Kyiv
Frameworks
• 2026 - Present: Designed and built AI-powered agents using
Microsoft Copilot Studio and Azure AI Foundry to help sales teams Angular, Spring, Spring MVC, Spring Boot,
develop sales strategies, analyze customer information, and Spring Data, Spring Security, Spring Cloud,
improve decision-making. Hibernate, NestJS
• 2025 - 2026: Developed and maintained a US-based dealership
management solution using Java and JavaScript, modernizing a Testing Tools
legacy monolith and building new microservices. Cucumber, Mockito, JUnit, Wiremock,
• 2023 - 2025: Developed enterprise healthcare software for one of Greenmail, Testcontainers, Jest
the world's largest hemodialysis providers, designing and
implementing new features using Java while collaborating with Databases
cross-functional teams.
• 2022 - 2023: Developed medical reporting solutions using Java, PostgreSQL, MySQL, BigQuery, GCP Spanner
enabling the generation of clinical reports from healthcare
systems. Clouds
GCP, AWS, Azure
Frontend Developer
PortaOne AI
02/2021 - 08/2022 Sumy Claude, Copilot, Microsoft Copilot Studio,
• 2021-2022: Developed an Angular-based web application for Azure AI
tracking and managing company events, delivering an intuitive and
user-friendly interface. Methodologies
Agile, Scrum, Kanban
EDUCATION
Languages
Master's Degree of Computer Science
English (B2), Ukrainian (Native)
Sumy State University
2022 - 2024 Sumy, Ukraine

Bachelor Degree of Computer Science
Sumy State University
2020 - 2024 Sumy, Ukraine

Junior Specialist
Machinebuilding college of Sumy State University
2016 - 2020 Sumy, Ukraine