Дмитро

DMYTRO DENYSENKO
Backend Java Developer

 [открыть контакты](см. выше в блоке «контактная информация») q [открыть контакты](см. выше в блоке «контактная информация»)
q https://t.me/denisenk00 s https://github.com/denisenk00

SUMMARY
As a seasoned Java Developer proficient in the intricacies of the Spring Framework and various DBMS, I have consistently
spearheaded the creation of high-performance backend applications. My track record includes driving the development of scalable
solutions, optimizing development workflows, and championing the adoption of best practices.

EXPERIENCE
Software Engineer
Netcracker Technology
07/2021 - 09/2023
Worked with high-load network inventory management systems. During this period more than 200 tickets on Jira were handled by
me. I was responsible for bug/change/feature request analysis, solution design and implementation.

Stack: Java 8, Spring Framework, Oracle SQL, PL\SQL, JSP, REST, SOAP, Maven, Jenkins, Grafana, Weblogic, Git

• Migrated from SOAP interaction to modern REST interface for managing objects
• Got rid of plenty of bottlenecks in the system by enhancing the performance of SQL queries and Java code
• Implemented/refined solutions for tracking resource's lifecycle
• Rewrote complex PL/SQL package with dozens of functions and procedures adhering to new requirements
• Created custom JSPs for specific project purposes
• Wrote several data fixes for huge amount of data using advanced SQL procedures with parallel execution
• Maintained CI/CD Jenkins jobs
• Monitored and analyzed the system performance using Grafana dashboards
• Maintained the security and integrity of software
• Integrated and provided to customer such internal components as RDB (Replicated Database), and Mail Sender
• Worked with module for export/import geo-views based on GSON
• Facilitated customer to manage security permissions of system users by adjusting deprecated product functionality
• Collaborated with external teams to gain expected result

Java Developer - Internship
Netcracker Technology
10/2020 - 06/2021
During internship I gained hands-on experience with:
• Java 16 SE (Collections, Strings, Stream API, Optional API, Reflection API, Networking, Concurrency, Date&Time API, Java Lang)
• Architecture and design patterns (GoF) in software development
• Development principles (SOLID, KISS, YAGNI, DRY)
• XML, DTD, XPath and JSON for data handling
• Networking protocols (HTTP, TCP, UDP) and socket programming
• J2EE and Spring Framework components (MVC, Security, AOP, Transactions, Boot).
• Advanced SQL querying for effective database management
• Git, GitHub usage with code reviewing
• Construction of UML diagrams for software design
• Web servers: Tomcat, Weblogic
• Other technologies: Servlets, JSP, Ajax, JDBC, JPA, JNDI, JMS

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PROJECTS
CityMonitor
12/2022 - 06/2023
Designed and implemented information system that allows government keep in touch with locals, gather needed information by
using quizzes which provides ability to make right decision timely

Stack: Java 18 , Spring (Boot, MVC, Data JPA, Security, Test), Hibernate, PostgreSQL, Postgis, Telegram API, Google Maps API,
JS, jQuery, Bootstrap, Docker, AWS

• Conducted research of domain
• Investigated and compared existing solutions
• Formed system requirements
• Designed architecture
• Elected instruments and technologies
• Implemented adhering to OOD principles and with utilizing GoF patterns

CleverMate
12/2023 - Present
System that allow telegram users interacts with AI model through a bot.

Stack: Java 18, Microservices, Spring (Boot, Cloud, Security), MongoDB, Resilience4j, Auth0, RabbitMQ, Docker Compose,
Telegram API, OpenAI API

SKILLS
Java 17 Spring Boot 3 Spring Core Spring Security Spring MVC Spring Data Spring Cloud

Spring Test Oracle SQL PostgreSQL Postgis PL/SQL MongoDB Hibernate REST API

SOAP RabbitMQ Auth0 OAuth2 OpenAPI(Swagger) Maven Git Docker

Docker Compose JUnit TestNG Mockito AWS EC2 AWS RDS Telegram API OpenAI API

Google Maps API Jenkins GitHub Actions

LANGUAGES
English Intermediate B1 Ukrainian Native Russian Proficient

EDUCATION
Master of Computer Science
Sumy State University
2019 - 2024

TRAINING / COURSES
SOLID English school - English for IT
Certified with Upper-Intermediate Low

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