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Backend Software Engineer

Age: 22 years
City: Lviv
Age:
22 years
City:
Lviv

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Danylo Senchyshyn
Kosice, Slovakia
[open contact info](look above in the "contact info" section)
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SUMMARY

Backend Software Engineer with 2+ years of experience specializing in Java and Spring Boot. Skilled in
building scalable backend services, REST APIs, and database-driven applications. Strong focus on clean
architecture, performance optimization, and reliable service delivery, with additional experience integrating
frontend components when needed.

WORK EXPERIENCE

Backend Software Engineer - Sombra Inc.
Sep 2024 – Present | Remote, Ukraine

• Developed and maintained microservices using Java 17, Spring Boot 3, and PostgreSQL.
• Implemented secure REST APIs and JWT-based authentication with Spring Security.
• Integrated services via REST and Kafka, improving communication reliability.
• Designed and optimized SQL queries and indexes for performance.
• Wrote unit/integration tests (JUnit 5, Mockito) and participated in code reviews.
• Deployed services with Docker & GitLab CI/CD in a microservice architecture.

TECH STACK
Backend: Java 17, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, REST API, Microservices

Databases: PostgreSQL, MongoDB, Redis

Testing & QA: JUnit, Mockito, Postman

DevOps & Tools: Docker, Git, Maven, Kafka, GitLab CI/CD

Frontend (basic): JavaScript, React, HTML5, CSS3

Education
• Technical University of Košice (TUKE)
Bachelor in Computer Sсience

Languages
Ukrainian (native), Russian (native), English (fluent), Slovak (intermediate)

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