Oleksandr

Oleksandr Varushchyk
Java Developer
Summary
Java Developer with over 2 years of experience specializing in web-development,
database query optimization, writing clean, maintainable code following best practices.
Experienced in using AWS tools and deploying applications and managing infrastructure
with Terraform. Additionally, developed a custom testing framework for e2e to ensure
high-quality code without using Java code.

Contact
Phone
Experience
[open contact info](look above in the "contact info" section)
Email
2023 May - current
[open contact info](look above in the "contact info" section)
Address
Java Developer at Job hunt project
Kyiv, Ukraine Developed some application features such as: Google-Authentication. Optimization
Birth date database quieries, using indexes and explain() & explainAnalyze(). MongoDB
1/15/2004 paggination with opportunity adding new criteria operators for search filters on
front-end side, without changes on back-end. One of main application features -
“anonymity” feature for vacancies and candidates, that allows for candidates hide
some details about him and for vacancies hides information about hiring company.
Education Password-recovery feature by sending recovery letter on user’s email, etc.

2021 - 2025 2022 May - 2023 May
Cybersecurity Bachelor's degree
Java Developer at Roks Systems
State University of Telecommunications
Worked on a messanger project, where developed sessions with the ability to force
termination, using Redis. Got experience working on front-end. Used AWS S3
Expertise Bucket for containing and using application files through APIs. Also, participated in
deployment application proccess on EC2 and used CodeDeploy for CI/CD.
Debugging
TDD Developed custom test framework that allows write e2e scenarios in JSON files,
SOLID without using Java code. Set up embedded configurations such as: MongoDB,
JPA Redis, Google client for Google libraries. Improve someone else's code, applying
REST API best practices for improving code effiency and readability, that also helped to
Design patterns define and fix bugs.
Data algorithms
Data structures
2022 September
Terraform
Cloud(AWS, Google) SoftServe IT Academy
Hibernate First meet with SCRUM where tasks represented as ‘sprints’, splited developer
Docker teams. Fasten Java basics, next step into Spring/Spring Boot, Hibernate, JDBC,
Maven
Transactions, Tomcat tools. Configuration security according application
GitHub/CodeCommit
requirments, such as: API path permissions, Json Web Token creation and
Java (J2EE, Java 8/11/17, OOP)
Spring (Core, Boot, Cloud, Data, Security) validation. Configuration Swagger Documentation and defining detailed API’s
SQL (PostgreSQL, MySQL) documentation. Participation in team code review, by searching bugs, best tips and
NoSQL(Redis, MongoDB) practices.
JUnit 4/5
TestNG
ReactJS

Language Reference
Verify sertification of Java Online Marathon: LinkedIn:
English - intermediate https://career.softserveinc.com/uk- [open contact info](look above in the "contact info" section)
ua/certification/verification /alex-varushik-827381250/
Ukrainian - native Series: CW Number: 9624/2022
Russian - native