Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/3178793/

Work experience

Senior Full Stack Developer

from 07.2025 to 08.2026 (1 year 2 months)
Confidential Company, Дистанційно (IT)

• Responsible for end-to-end development of a high-fidelity document conversion and interactive reporting platform across Java/Spring Boot services and a React/TypeScript application.
• Built Java 21/Spring Boot 3 pipelines for PDF, Word, presentation, spreadsheet, HTML, and text formats, preserving page geometry, fonts, images, tables, and formulas while supporting OCR-derived and multilingual/RTL content.
• Developed React 18/TypeScript workflows with Redux and Material UI for document reconstruction, analysis overlays, navigation, annotations, comments, and print/PDF output.
• Defined and maintained REST/JSON contracts between conversion and report applications, aligning text indexes, coordinates, media resources, and analysis metadata.
• Implemented staged processing, payload and media optimization, lazy loading, caching, Micrometer/Prometheus metrics, and regression validation to address reliability and performance risks.
• Use Codex as part of an AI-assisted software development workflow for codebase analysis, implementation planning, debugging, refactoring, test generation, and code review, retaining engineering ownership and validating changes through automated tests and manual review.
• Partnered with client stakeholders through meetings and Jira from requirements clarification through validation; built JUnit, Jest/React Testing Library, contract, Playwright, and visual-regression coverage.
Core stack: Java 21, Spring Boot 3, React 18, TypeScript, Redux, Material UI, REST APIs, MySQL, Cassandra, Apache PDFBox, Apache Tika, JUnit, Jest, Playwright, Gradle, Docker Compose, Micrometer, Prometheus, Git, and Jira.

Java Senior Developer

from 02.2025 to 07.2025 (6 months)
Dpr Team, Київ (IT)

• Integrated PayPal and extended Stripe functionality to enhance the payment processing system.
• Developed and maintained a Spring Boot 3.x application with MySQL as the primary database.
• Worked in an Agile Scrum environment, participating in sprint planning, daily stand-ups, and retrospectives.
• Ensured high code quality by implementing comprehensive unit and integration
tests.
• Contributed to frontend tasks using JavaScript, improving system interactivity and user experience.

Java Team Lead

from 11.2021 to 09.2024 (2 years 11 months)
Укрпошта, Київ (IT)

•Payment system wright from the scratch and integrated other services
•Microservice architecture
•Communication with clients.
•Clickup tracking task system.
•Scrum work process.
•Backend, ORM technologies that was used: Java 11, Spring Boot, Hibernate, Jackson, JPA, PostgreSQL, build tool Maven.
•Message broker kafka
• Code review
• Сonducted an interview
• Customer communication

Java Full Stack Developer

from 03.2018 to 10.2021 (3 years 8 months)
Daxx (Griddynamics), Київ (IT)

•American project related to e-commerce
•Development and support project.
•Communication with clients.
•Jira and Git tracking task system.
•Scrum work process.
•Backend, frontend and ORM technologies that was used: Java 8, Spring Boot, Hibernate, MySQL, HTML, Thymeleaf, CSS, Bootstrap, JavaScript, build tool Maven.

Java Software Engineer

from 09.2017 to 03.2018 (7 months)
Infopulse, Kiev (IT)

Writing technical documentation
Communication with a representative of the customer.
Creating demo for customer on spring boot
www.infopulse.com.ua

Java Developer

from 12.2016 to 09.2017 (10 months)
TargetBrain, Kiev (Java-Web Development), Киев (Business Education)

- Creating SMS and Voice sending.
- Making rest request to API.
- Fronted adding forms,
- Creating a tests.
- Worked by scrum process.

Junior Java Developer

from 12.2015 to 12.2016 (1 year)
IT-Centre, Kiev (Java-Programming Learning)

- Helped new student learn Java Programming.
- Creating Java SE tasks.
- SQL request.
- Added new tasks and information to program education.
Adding new tasks and information to program education.
http://it-centre.net/
My programs and apps in github:
https://github.com/lMysticl

Design Engineer

from 12.2014 to 12.2015 (1 year)
Antonov, Kiev (Aircraft Manufacturing)

Modeling parts modeling of aircraft parts in Siemens NX Teamcenter.
Work with technical documentation, aircraft building iso.
Work and editing drawings.
Technical solution to repair broken parts.

Education

The National Technical University of Ukraine “Kyiv Polytechnic Institute” (NTUU "KPI")

Faculty Dynamic Strength Machines (master), Kiev
Higher, from 2008 to 2014 (6 years)

Additional education and certificates

IT-Centre,Programming in Java

6 месяцев

Advanced Exel user

2014

Java

2026
Certificate

Software Engineer Certificate

2026
Certificate

Frontend Developer (React)

2026
Certificate

Problem Solving (Intermediate)

2026
Certificate

Knowledge and skills

• HTML
• Java
• CSS
• MySQL
• Git
• Spring Framework
• Hibernate
• SQL
• JavaScript
• Java Core
• JUnit
• OOP
• Apache Tomcat
• Spring Boot
• JPA
• JSON
• Spring MVC
• Design Patterns
• Mockito
• Gradle
• MongoDB
• Jenkins
• AWS
• CI
• RabbitMQ
• Apache Kafka
• Kafka
• Docker
• PostgreSQL
• JSON Web Token
• SOLID Principles
• Vue.js
• Apache Maven
• Continuous Integration
• Scrum
• Kanban
• Codex
• Cloud
• Claude API
• Ollama
• Openclaw
• React

Language proficiencies

English — advanced

Additional information

PDF Text Layer Auditor:
https://github.com/lMysticl/pdf-text-layer-auditor

My github with applications and programs written in java.
https://github.com/lMysticl

COMPASS, Solidworks, Catia v5, NX
English – Upper-intermediate English (B2)
Passed foundation course in modeling and working in Teamcenter Nx.
Pass rate experienced user Exel program.
Driving license cat. B
Hobbies, music, guitar,technological innovations, programming electronics, computer science, telecommunication, play football, travel, cycling, skiing.