Данііл

Dryzhov Daniil
Java Backend Developer
Nitra, Slovakia (Ready to work remotely or relocate)
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)

🔗 LinkedIn: [open contact info](look above in the "contact info" section)
🔗 GitHub: github.com/daniildryzhov
🔗 Telegram: t.me/ddryzhov
SUMMARY
Motivated Junior Java Backend Developer and Computer Science Graduate (2025). Demonstrated
ability to design and deploy RESTful APIs, having independently architected four comprehensive
Spring Boot applications from scratch. Proficient in Java, the Spring ecosystem, relational
databases, and cloud infrastructure using Docker and AWS. Committed to software reliability,
consistently achieving over 95% test coverage and implementing CI/CD pipelines via GitHub
Actions. Bringing the high-level discipline and focus of a Master of Sports to solve complex
technical challenges in a modern engineering team.

EDUCATION
Bachelor of Science (B.Sc.) in Computer Science Graduated 2025
Technical University of Košice Košice, Slovakia

CERTIFICATES
Mate Academy — Intensive Full-Time Java Developer Bootcamp
Completed a rigorous, full-time software engineering program focused on enterprise
Java development, clean architecture, and modern backend practices.
Gained extensive hands-on experience through daily coding challenges, peer
programming, and building scalable REST APIs from scratch.
Successfully passed strict technical code reviews by Senior Developers for every
project, ensuring adherence to SOLID principles and industry standards.

MY PROJECTS

Accommodation Booking System | Java 17, Spring Boot, AWS, PostgreSQL, Stripe API
Engineered a comprehensive backend system for accommodation management with secure
payment processing and real-time notifications.
Architected a scheduling algorithm with automatic expiration, completely eliminating double-
booking conflicts and ensuring data consistency.
Integrated Stripe API for secure transactions and Telegram Bot API for instant automated user
alerts.
Migrated application infrastructure to AWS, utilizing ECS for container deployment, RDS for the
database, and Secrets Manager for secure credentials.
Ensured robust data integrity using Liquibase for database migrations and documented all
REST endpoints with Swagger/OpenAPI.
Task Management Platform | Java 17, Spring Boot, Spring Security, MySQL, Dropbox API
Built a project management REST API featuring Role-Based Access Control (RBAC) with
secure JWT authentication.
Integrated the Dropbox API for seamless file attachment storage, validating the
implementation through comprehensive integration tests with Testcontainers.
Configured automated email notifications to track task lifecycle events and improve
team collaboration.

Context-Free Grammar Visualizer | Java, Spring Boot, React, JUnit 5, Testcontainers
Developed a full-stack educational tool for the step-by-step analysis and visualization of
parsing algorithms.
Designed and implemented a caching mechanism that reduced processing time for complex
grammar parsing by 60%.
Engineered custom algorithms for FIRST/FOLLOW/PREDICT sets and EBNF transformation,
resolving parsing conflicts.
Achieved 100% test coverage of the core parsing logic utilizing JUnit 5 and Testcontainers to
guarantee algorithm accuracy.

E-Commerce Bookstore API | Java 17, Spring Boot, Hibernate, MySQL, Liquibase
Developed a scalable RESTful API handling the complete e-commerce lifecycle, from shopping
cart management to secure order tracking.
Optimized database queries and JPA entity mappings to ensure highly efficient catalog search
and category filtering.
Implemented soft-delete mechanisms to preserve historical order data without compromising
database integrity.

SKILLS
Backend & Frameworks: Cloud & DevOps
Java (8-17), Spring Boot, Spring Security, AWS (ECS, RDS, S3, Secrets Manager,
Spring Data JPA, Hibernate CloudWatch), Docker, GitHub Actions (CI/CD),
Maven
Architecture & APIs
RESTful APIs, Microservices, Testing
OpenAPI/Swagger, JWT Authentication JUnit 5, Mockito, Testcontainers

Databases & Tools
PostgreSQL, MySQL, Liquibase, MapStruct,
Lombok

LANGUAGES
English – Upper-Intermediate Ukrainian – Native
Slovak – Advanced Russian – Native

ACHIEVEMENTS
Master of Sports in swimming