Bohdan

Bohdan Tkachuk
FullStack Developer (Java, React/Next,
React Native)
PROFILE
I am a FullStack developer with expertise in Java (Groovy, Kotlin),
React/Next.js and React Native, including 4 years of commercial experience on
a cryptocurrency exchange project and internet banking project, and GovTeck
projects, and smaller projetcs, along with ~1 year of internship. I have a strong
grasp of Agile development methods and practical OOP concepts, with hands-
CONTACT on experience in various Java frameworks and technologies. I excel in problem-
solving, teamwork, and continuously expanding my knowledge of new
[відкрити контакти](див. вище в блоці «контактна інформація») technologies.

[відкрити контакти](див. вище в блоці «контактна інформація»)
Chernivtsi, Ukraine
WORK EXPERIENCE
@pro100user17
MK-Consulting (Full Time) Nov 2025 - Present
Full-Stack Developer (Java, Next.js, Nest.js)
EDUCATION 1. Developed a registry system for tobacco products in Ukraine,
supporting structured product data management and regulatory
KAMIANETS-PODILSKYI workflows.
NATIONAL UNIVERSITY 2. Built backend services for Diia.Business, focused on generating
2024 - PRESENT personalized user recommendations.
3. Fixed security vulnerabilities in a project for a Ukrainian business,
Master of Computer Science
improving application stability and overall security.
4. Contributed to the Big Recovery Portal, including backend and
CHERNIVTSI NATIONAL
frontend development, and developed the Infobox module.
UNIVERSITY
5. Contributed to a project related to medical procurement, supporting
2022 - 2024
digital workflows and system improvements.
Bachelor of Computer Science
Cryptocurrency Exchange Platform Feb 2025 - Mar 2026
CHERNIVTSI POLYTECHNIC (Part Time) Next.js & ReactNative Developer
COLLEGE Led a large-scale website redesign.
2019 - 2022 Added new pages and components.
Junior Specialist of Computer Redesigned pages for spot and futures trading.
Science Fixed bugs.
Fixed bugs on mobile.
Redesigned the mobile application.
LANGUAGES Teamvoy July 2022 - October 2025

English (Upper Intermediate) CardB project: (Full time) May 2025 - Present

Ukrainian (Native) Next.js, React Native Developer
Mobile application for depositing and paying with cryptocurrency on a
Visa card:
SKILLS Improved and fixed the mobile application.
Developed a new product (mobile and website) for Kazakhstan to
Teamwork provide various types of services to foreigners.
Time Management
SARA project: (Full time) March 2025 - May 2025
Effective Communication
Java Developer
Problem Solving
Mobile banking application:
Adaptability Developed new services for transaction processing and wallet
Attention to Detail management.
Contributed to, fixed, and refactored existing services.
Optimized legacy code to speed up request execution.

Inernet Banking project: (Full time) Nov 2024 - March 2025
Java Developer
This project involved the development and integration of Internet banking
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
to administrators about certain events (pending approvals).
Fixing and improving the code on the main services.

OSL project: (Full time) July 2022 - October 2024
FullStack Developer (Java, Groovy, Kotlin + React)
Crypto Currency Exchange Platform:
Developed services to identify the optimal cryptocurrency prices and
facilitate secure crypto transactions.
Contributed to the development of onboarding services for multiple
country-specific websites across both frontend and backend systems.
Built a React Native mobile application featuring the core
functionalities of the website.
Designed and Implemented new services and upgraded existing
backend logic.
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.

Small Projects and Internship:

Car Rental (Part Time) Feb 2026 - Mar 2026
Next.js Developer
Website redesign, bug fixes, website support.

Music Store (Part Time) Sep 2025 - Nov 2025
Nest.js & React Developer
Website redesign, bug fixes, server-side support, AWS configuration.

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);
Cursor, Antigravity, Cloude, Codex.