Сергій

SERGII KONOVALOV
JAVA DEVELOPER

CONTACT PROFILE
[відкрити контакти](див. вище в блоці «контактна інформація») Java Developer with one year of learning and development experience, possessing strong
knowledge of Java Core and modern technologies. Delivered three production-oriented
[відкрити контакти](див. вище в блоці «контактна інформація») projects using Java 17/21, Spring Boot, Hibernate, Spring Security (JWT), Spring Data JPA,
Liquibase, MapStruct, Stripe API, Telegram API, Docker, Swagger/OpenAPI. Experienced in
building RESTful applications, working with MySQL, PostgreSQL, JUnit 5, Mockito, and
Ivano-Frankivsk, Ukraine
Testcontainers. Deployed projects to AWS (EC2, S3, RDS), configured environments, and
managed integrations. English level: B1, confident in reading and understanding technical
LinkedIn GitHub Telegram documentation. Known for attention to detail, responsibility, and the ability to deliver tasks
quickly and efficiently without supervision. Holds a Master’s degree in Computer Software
SKILLS Engineering and a Bachelor’s degree in Computer Science.

Java: Java 17/21, Java Core, OOP, SOLID,
WORK EXPERIENCE
Collections, Streams API, Multithreading
Java Developer JUNE 2024 - PRESENT
DB: Hibernate, Spring Data JPA, JDBC,
Full-cycle development of RESTful web applications, applying OOP and SOLID
MySQL, PostgreSQL, Liquibase, Redis (basic) principles.
Spring: Spring Boot, Spring Core, Spring Designing and managing relational database schemas, ensuring data integrity and
performance.
Web, Spring Security (JWT), Spring Data,
Ensuring code reliability through unit and integration testing, and participating in peer
OAuth2 (basic) code reviews.
Deploying and maintaining applications in cloud environments (AWS).
Web Development: REST API, JSON, XML,
Projects
Servlet, JSP (basic), Tomcat
Kyiv Cafe Hub | Java 21, Spring Boot, PostgreSQL, Redis, Docker, Testcontainers, JUnit 5
Tools: JUnit 5, Mockito, Testcontainers, Served as the sole backend developer, architecting and building the entire server-side
MapStruct, Cucumber (basic), Swagger / logic for a cafe discovery platform.
Implemented advanced search with dynamic filtering and optimized API response times by
OpenAPI, Stripe API, Telegram API, Maven, integrating Redis for caching.
Gradle, Docker & Docker Compose Bookstore API | Java 17, Spring Boot, Spring Security, JWT, MySQL, Docker, MapStruct,
Swagger
Cloud: AWS (EC2, S3, RDS – deployment & Engineered a secure e-commerce REST API featuring complete CRUD functionality for
configuration) books, shopping carts, and orders.
Implemented role-based access control (Admin/Customer) using Spring Security and JWT.
Version Control Tools: Git, GitHub Containerized the application using Docker and documented the API with Swagger for
IDE: IntelliJ IDEA clarity and ease of use.
Car Sharing Service | Java 17, Spring Boot, Spring Security, Stripe API, Telegram API, MySQL,
Operating systems: Windows, Linux Liquibase, Docker, AWS
(Ubuntu) Developed a feature-rich API to automate a car rental service, from vehicle management
to user notifications.
English: B1 (Intermediate) Integrated Stripe for secure payment processing and the Telegram API for instant booking
notifications.
Designed the database schema, managed versioning with Liquibase, and deployed the
EDUCATION application to AWS (EC2, RDS).

Master’s Degree in Computer
Software Engineering
ACHIEVEMENTS
Ivano-Frankivsk National Technical Actively contributed to team projects in cybersecurity planning for critical infrastructure,
University of Oil and Gas coordinating tasks between multiple stakeholders (including NSDC of Ukraine, NCCC,
2022-2024
and CRDF Global representatives).
Bachelor’s Degree in Computer Science Awarded for diligence and responsibility in previous position, demonstrating high work
National Technical University of ethic and reliability.
Ukraine "Igor Sikorsky Kyiv Polytechnic
Institute"
2017-2021