Роман

Roman Shuliak
Java Software Engineer
Kyiv, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | LinkedIn

Summary

Java Software Engineer with 7+ years of commercial backend experience across FinTech, Telecom,
Logistics, E-commerce and iGaming. Experienced in developing enterprise backend applications, high-load
distributed systems, microservices architecture, third-party integrations, building services from scratch,
improving application performance. Skilled in Java (8–21), the Spring ecosystem, messaging platforms
(Kafka, RabbitMQ, ActiveMQ) and SQL/NoSQL databases (Oracle, PostgreSQL, MySQL, MongoDB,
DynamoDB, Redis). Proficient in cloud-native development using AWS, Kubernetes and Docker, with strong
experience in CI/CD pipelines and automated testing (JUnit, Mockito, Testcontainers, Cucumber, JMeter).
Interested in working on project with modern technologies, communicative, motivated, active, responsible
team member.

Key Skills & Technologies
Languages: Java 8/11/17/21
Frameworks: Spring (Core, Boot, MVC, Data, Security, Cloud, Flux), Hibernate
Messaging: Kafka, RabbitMQ, ActiveMQ
APIs: REST, SOAP, GraphQL
Databases: Oracle, PostgreSQL, MySql, MongoDB, DynamoDB, Redis
Security / IAM: Keycloak, OAuth2, OpenID Connect, JWT
Cloud & Infra: AWS (S3, DynamoDB, Lambda), Kubernetes, Docker, Terraform
Build & CI/CD: Gradle, Maven, Jenkins, TeamCity, GitLab
Testing: JUnit, Mockito, Testcontainers, Cucumber, JMeter
Monitoring & Observability: Prometheus, Grafana, New Relic
Logging: ELK Stack (Elasticsearch, Logstash, Kibana), Splunk
App Servers: IBM WebSphere, JBoss
Workflow / BPM: Camunda, IBM BPM
Version Control: Git
AI Tools: Claude Code, Copilot

Professional Experience

Atlaslive — Casino Project | Senior Java Software Engineer
Sep 2024 – Present, Kyiv

Working on the development of a high-load iGaming casino platform, focused on integrating external game
providers and building scalable backend services supporting casino operations.

● Developed microservices and APIs integrating the platform with external game providers and with
internal services.
● Implementing new features and fixing bugs to maintain and improve the platform’s functionality.
 ● Conducting performance tuning and optimization to address bottlenecks and improve system
efficiency.

Stack: Java 21, Spring Boot, Hibernate, JPA, PostgreSQL, Redis, RabbitMQ, REST, GraphQL, AWS
(EKS, S3), Kubernetes, Docker, Gradle, GitLab, JUnit, Mockito, Testcontainers, JMeter, ELK Stack,
Prometheus, Grafana

Luxoft — Supply Chain Project | Senior Java Software Engineer
Oct 2021 – Aug 2024, Kyiv

Worked on a supply chain project managing end-to-end product flow from suppliers to customers.

● Developed microservices and implemented business logic and features within a distributed, event-
driven architecture.
● Participated in developing vendor integrations and event-driven workflows for order processing and
inventory management.
● Implemented automated unit, integration, end-to-end and load tests to ensure system reliability,
performance and scalability.

Stack: Java 17, Spring Boot, Kafka, REST, GraphQL, AWS (EKS, S3, DynamoDB, Lambda), Kubernetes,
Docker, Terraform, Gradle, GitLab, JUnit, Mockito, Cucumber, NewRelic, Splunk

Intellias — Logistics Project | Java Software Engineer
Mar 2021 – Oct 2021, Kyiv

Worked on the development of an MVP logistics platform for managing transportation operations and
workflows.

● Developed backend services from scratch and implemented core business logic and key business
functionality.
● Designed and implemented business process workflows using Camunda.
● Developed integrations with third-party systems.

Stack: Java 11, Spring Boot, Hibernate, JPA, PostgreSQL, MongoDB, REST, SOAP, Camunda, Docker,
Maven, Jenkins, JUnit, Mockito, NewRelic

Luxoft — Banking Project | Java Software Engineer
May 2020 – Mar 2021, Kyiv

Worked on banking processes and web services development, focusing on building and automating core
banking workflows.

● Developed web services and integrated them with other banking systems.
● Designed and implemented banking business process workflows using IBM BPM.
● Contributed to UI development using JavaScript, HTML and CSS3 for banking applications.
Stack: Java 8, J2EE, Spring Boot, Hibernate, JPA, Oracle, REST, SOAP, JMS, IBM WebSphere, IBM BPM,
Maven, TeamCity, JUnit, Mockito, JavaScript, HTML, CSS3

GlobalLogic — Telecom Project | Java Software Engineer
Mar 2019 – May 2020, Kyiv

Developed a cloud management system for telecom vendors, automating and orchestrating virtual
applications and network services across multi-vendor clouds and data centers.

● Developed and enhanced software applications by adding new features, fixing bugs and performing
code refactoring to improve functionality.
● Participated in developing a framework for integration testing.
● Developing unit and integration tests to ensure code quality and reliability.

Stack: Java 8, J2EE, Spring, Hibernate, JPA, PostgreSQL, Apache ActiveMQ, JMS, REST, SOAP, JBoss,
Docker, Jenkins, Maven

Education
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” — Specialist degree,
Engineer of Software Development (2007)

Languages
Ukrainian — Proficient | Russian — Proficient | English — B2