# Andrii Chuiakin

> Senior Software Engineer @ JPMorgan Chase

Location: New York City Metropolitan Area, United States
Profile: https://flows.cv/andriichuiakin

Results-driven Software Engineer with 8 years of extensive experience in developing complex web services (both monolithic and microservices) using the Java stack. Proficient in applying algorithms and data structures to deliver high-quality products. Passionate about solving challenging problems and staying up-to-date with the latest technologies and tools.

## Work Experience
### Senior Software Engineer @ JPMorganChase
Jan 2024 – Present | Jersey City, New Jersey, United States

### Senior Software Engineer @ Qlearsite
Jan 2017 – Jan 2022 | Odesa, Ukraine
Employee Retention Platform
- Implemented flexible module builder allowed import and analysis of any needed data with Spring MVC.
- Boosted platform performance by 50% through successful transformation into multithreaded scalable microservices architecture using Spring Boot, Eureka, Zuul, PostgreSQL and MongoDB.
- Reduced operating costs by 25% by implementing data import in batches, leading to optimized memory usage thus attaining same performance from smaller instances. 
- Improved user experience by designing and implementing intelligent data skipping and caching techniques reducing average user wait time from 3s to under 200ms during report fetching.
- Developed a robust security library using OWASP, resulting in a 95% reduction in vulnerabilities and successful external penetration tests.
- Achieved 90% code coverage through rigorous unit and integration testing using SonarQube, JUnit and Mockito.
- Mentored and guided junior engineers, fostering a culture of continuous learning and growth.

### Software Engineer @ Norse Digital
Jan 2015 – Jan 2017 | Odesa, Ukraine
Organizational Science Platform
- Streamlined the architecture by replacing Camel with Spring MVC, leading to a 20% reduction in config files.
- Slashed costs by transitioning from OracleDB to PostgreSQL, resulting in a 60% decrease in instance expenses.
- Implemented data partitioning and materialized views, reducing data size and query time by 3 times.
- Introduced partitioning and multi-threaded data saving, halving import time on the same instance size.
- Ensured software quality by covering the existing API with tests using SonarQube, JUnit, Mockito, Powermock and introducing Test-Driven Development TDD, reducing regression bugs by 20%.

### Junior Software Engineer @ Luxoft
Jan 2015 – Jan 2015 | Odesa, Ukraine
Web Data Crawling Platform
- Developed web data scraping scripts using Java and XML.
- Parsed and extracted deeply nested and archived files using Apache POI.
- Conducted thorough testing with Selenium, achieving approximately 70% coverage.


## Education
### Master's degree in Computer Systems and Networks
Odessa Polytechnic National University
Jan 2009 – Jan 2010

### Bachelor's degree in Computer Engineering
Odessa Polytechnic National University
Jan 2005 – Jan 2009


## Contact & Social
- LinkedIn: https://linkedin.com/in/andrii-chuiakin

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Source: https://flows.cv/andriichuiakin
JSON Resume: https://flows.cv/andriichuiakin/resume.json
Last updated: 2026-03-22