Kristina Sizova
@kristinasizova
Backend-focused software engineer building enterprise ATS integrations with Java, Spring, and automation.
EstoniaWhat I'm looking for
I’m a Software Engineer with 3+ years of experience in backend development and test automation for enterprise integration systems. I’ve worked across 7+ enterprise ATS integrations (including Workday, Oracle Recruiting, SmartRecruiters, iCIMS, and Neogov), handling hands-on production troubleshooting in distributed systems.
At HireRight, I built a new enterprise ATS integration with Neogov from scratch, implementing OAuth2 authentication, REST services, and RabbitMQ-based messaging for order status updates. I also developed SQL and PL/SQL scripts for integration configuration, data validation, and production support.
Earlier, I designed and maintained a Java/BDD automation framework spanning UI, API, database, messaging, and integration layers, expanding regression coverage by automating previously identified production bugs. I optimize for speed and stability to reduce flaky test failures, using Jenkins CI/CD and a strong testing toolset.
Experience
Work history, roles, and key accomplishments
Built a new enterprise ATS integration with Neogov from scratch, implementing OAuth2 authentication, REST services, and RabbitMQ-based messaging for order status updates. Investigated and resolved production issues across distributed integration systems and developed SQL/PL-SQL scripts for integration support.
Designed and maintained a Java/BDD automation framework spanning UI, API, database, messaging, and integration layers across 7+ ATS integrations. Increased regression coverage by automating previously found production-bug scenarios and improved suite speed and stability by reducing flaky failures.
Wrote unit tests for REST API interfaces using Mockito as part of a backend development team.
Education
Degrees, certifications, and relevant coursework
Tallinn University of Technology
Bachelor of IT Systems Development, IT Systems Development
2019 - 2023
Bachelor of IT Systems Development program at Tallinn University of Technology from 2019 to 2023.
Availability
Location
EstoniaAuthorized to work in
Job categories
Skills
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