Bohdan

Bohdan Tkachuk
FullStack Developer (Java, React/Next,
React Native)
PROFILE
I am a FullStack developer with expertise in Java (Groovy, Kotlin) and React,
including 3 years of commercial experience on a cryptocurrency exchange
project and internet banking project, along with ~1 year of internship. I have a
strong grasp of Agile development methods and practical OOP concepts, with
hands-on experience in various Java frameworks and technologies. I excel in
CONTACT problem-solving, teamwork, and continuously expanding my knowledge of new
technologies.
[open contact info](look above in the "contact info" section) WORK EXPERIENCE
[open contact info](look above in the "contact info" section)
Teamvoy July 2022 - Present
Chernivtsi, Ukraine
CardB project: (Full time) May 2025 - Present
@pro100user17
Next.js, React Native Developer
Mobile application for depositing and paying with cryptocurrency on a
Visa card:
EDUCATION Improved and fixed the mobile application.
Developed a new product (mobile and website) for Kazakhstan to
KAMIANETS-PODILSKYI
provide various types of services to foreigners.
NATIONAL UNIVERSITY
2024 - PRESENT
SARA project: (Full time) March 2025 - May 2025
Master of Computer Science
Java Developer
CHERNIVTSI NATIONAL Mobile banking application:
UNIVERSITY Developed new services for transaction processing and wallet
management.
2022 - 2024
Contributed to, fixed, and refactored existing services.
Bachelor of Computer Science
Optimized legacy code to speed up request execution.

CHERNIVTSI POLYTECHNIC
Inernet Banking project: (Full time) Nov 2024 - March 2025
COLLEGE
2019 - 2022 Java Developer
Junior Specialist of Computer This project involved the development and integration of Internet banking
Science systems for multiple banks (one was not fully integrated due to client-side
constraints, one is live in production, and another is currently in progress).
Developing the ability to send alerts to users and administrators via
websocket, setting up different types of notifications for users, and alerts
LANGUAGES to administrators about certain events (pending approvals).
Fixing and improving the code on the main services.
English (Upper Intermediate)
Ukrainian (Native)
OSL project: (Full time) July 2022 - October 2024
FullStack Developer (Java, Groovy, Kotlin + React)
SKILLS Crypto Currency Exchange Platform:
Developed services to identify the optimal cryptocurrency prices and
Teamwork facilitate secure crypto transactions.
Time Management Contributed to the development of onboarding services for multiple
country-specific websites across both frontend and backend systems.
Effective Communication Built a React Native mobile application featuring the core
Problem Solving functionalities of the website.
Adaptability Designed and Implemented new services and upgraded existing
backend logic.
Attention to Detail Collaborated on a comprehensive site redesign, incorporating new
frontend elements and features, with a follow-up iteration introduced a
year later.
 Emissions project: (Part time) July 2023 - July 2023
Java Developer
I developed a Java-based data synchronization service for monitoring
vehicle emissions on Kazakhstan’s highways. It automatically started with
the data collection system, merged data from multiple tables,
synchronized it between databases, and sent it to the main backend. The
service also supported self-updates.

Cryptocurrency Exchange Platform Jan 2025 - Aug 2025
(Part Time) Next.js & ReactNative Developer
Led a large-scale website redesign.
Added new pages and components.
Redesigned pages for spot and futures trading.
Fixed bugs.
Fixed bugs on mobile.
Redesigned the mobile application.

Niko IT Academy (Part Time) Oct 2024 - Oct 2024
Teacher of FullStack Developing
I created a series of hour-and-a-half video tutorials on FullStack
development, covering a wide range of topics, including networking,
backend and frontend development, and APIs. Each session comprised
a 90-minute lecture followed by a 90-minute hands-on practical segment.

Softserve (Internship) Nov 2021 - July 2022
Java and React Internship / FullStack Developer
During my internship at SoftServe, I developed a React and Java project,
enhancing my Frontend and Backend skills. Later, I contributed to an
open-source school scheduling project, gaining experience in public
collaboration and real-world educational solutions.

SKILLS

Programming languages:
Java, Groovy, Kotlin, JS, TS;
Databases:
MySQL, PostgreSQL, MongoDB;
MSSQL, SQLite, H2 - low experience;
Frameworks and Technologies:
Spring Boot MVC, Spring Boot WebFlux, WebSocket;
Spring Security, JWT, OAuth2;
Spring Data JPA, Spring Data R2DBC, Hibernate;
Spring Cloud (Vault);
Kafka, Redis;
Flyway, Thymeleaf, Lombok , MapStruct, SLF4G;
JUnit, Testcontainers, Selenium;
Grafana, Prometheus, Zipkin;
Maven, Gradle;
Frontend:
React.ts, Next.js, ReactNative, HTML, CSS (SCSS, styled components);
Angular on low level;
Other:
CI: GitHub Action, GitLab CI;
Docker, Kubernetes, K9S, ArgoCD;
IntelliJ IDEA Ultimate, WebStorm, Cursor, Postman, Git (GitHub,
GitLab);