Sadolinskyi

Sadolinskyi Bohdan | Senior Java Developer
Experienced Java Backend Developer with 5+ years in Spring Boot, Kubernetes, AWS, GraphQL, and Kafka. Skilled in building scalable microservices,
optimizing system performance, and integrating cloud solutions (AWS, Google Cloud, Docker, Helm, CI/CD). Strong expertise in PostgreSQL, MySQL,
MongoDB, Redis, and security (JWT, OAuth, LDAP). Passionate about writing clean, well-tested code and delivering high-performance backend solutions.

Work Experience Technology Skills

Programming Caching
Senior Java Developer Languages • JCache, Spring Cache,
Onseo – (February 2024 - present) Caffeine, Redis, Hazelcast
• Java (5+ років, Senior
The main tech stack: Java, Spring, K8s, MySQL, MongoDB, AWS, Google Cloud, Jenkins, Level)
Helm, Kafka, JUnit
• Groovy (1+ рік), Logging &
Currently engaged in a project for medical educational institutions, focusing on the JavaScript, Python Monitoring
simulation of human body behavior and its reactions to various injuries and diseases. • Logging: Logback, Log4j2,
My primary responsibility involves facilitating communication with the body simulation Frameworks & SLF4J
and associated services, including user management, company administration, and Libraries • Monitoring: Micrometer,
scenario handling.
• Backend: Spring (Boot, Spring Boot Actuator,
Security, Data, Cloud), Prometheus,
Senior Java Developer DGS (GraphQL), Akka VictoriaMetrics, Grafana,
Datadog, ELK
Intellias(Digital Inspired) – (February 2022 - February 2024) • Database: jOOQ, JDBC, (Elasticsearch, Logstash,
Hibernate, JPA, Spring
The main tech stack: Java, Spring, GraphQL(DGS), Postgres, AWS, LDAP, GitLab CI/CD, Kibana)
Data, Flyway, Liquibase
Helm, Kafka, Keycloak, Redis, JUnit, Cucumber
Developed and maintained backend solutions for a large-scale plumbing retail platform. • Testing: JUnit, Mockito, DevOps & CI/CD
Cucumber,
Responsibilities encompassed customer registration, personnel synchronization via • Version Control: Git
PowerMock, WireMock
Google Workspace (LDAP), and integration with banking systems for invoice processing, (GitLab, GitHub)
returns management, and delivery operations.
APIs & • Build Tools: Gradle, Maven
Communication • CI/CD: Jenkins, GitLab
Senior Java Developer CI/CD
• GraphQL, RESTful,
TruePlay – (April 2021 - February 2022) gRPC, SOAP, • Cloud & Containerization:
The main tech stack: Java, Spring, Postgres, GitLab CI/CD, Kafka, Redis, JUnit WebSocket Docker, Kubernetes, Helm,
Contributed to the development of a gambling platform with a scope similar to my AWS, Google Cloud
previous role. Focused on integrating game providers into the company's aggregation
Databases
system to enhance platform capabilities. • SQL: PostgreSQL, Applications & Tools
MySQL • IntelliJ IDEA, JProfiler,
Postman, Insomnia, AKHQ,
Middle Java Developer • NoSQL: MongoDB,
DevTools, SoapUI, JMeter
Redis
Onseo – (July 2018 - April 2021)
The main tech stack: Java, Akka, MongoDB, Jenkins, Kafka, gRPC, JUnit, Elasticsearch Security Project Management
Led a small team of three developers, overseeing the development of a sports statistics
& Methodologies
• OIDC: Spring Security
system. Managed data collection from over ten external services, implementing OAuth2, Keycloak • Agile, Scrum, Kanban
efficient data merging and prioritization strategies to optimize system performance.
• RBAC, LDAP

AQA and Junior Java developer
Jelastic – (July 2017 - June 2018) Education
The main tech stack: Groovy, Java
Gained initial commercial experience working on a cloud platform project based on Bachelor's Degree in Automation and computer-
Virtuozzo. Developed plugins for various IDEs and contributed to the platform’s integrated technologies
container management mechanism, ensuring robust performance and scalability. 2015 — 2019
Zhytomyr Polytechnic State University
Junior Groovy Developer
Freelance, Zhytomyr – (December 2016 - June 2017)
The main tech stack: Groovy, Spring, MySQL
Contact information
[відкрити контакти](див. вище в блоці «контактна інформація») Telegram
Worked on a legal technology project that automated the generation of legal
documents for notary clients. Utilized Groovy on Grails with the Vaadin framework, [відкрити контакти](див. вище в блоці «контактна інформація») LinkedIn
engaging in full-stack development to customize document generation based on client
requirements.