Open to opportunities
Hi, I'm Uliana-Olena
QA Engineer who breaks things before users do.
5 years crafting bulletproof software — from mobile apps to enterprise security systems. I turn chaos into confidence, one test at a time.
$ running test suite...
✓ API integration tests passed
✓ Security validation complete
✓ Data consistency verified
✓ 0 critical bugs in production
$ _
About Me
Quality is not an act, it's a habit.
I'm a QA Engineer who sees testing as detective work — finding the bugs that hide in edge cases, the race conditions that strike at 3 AM, the security gaps that shouldn't exist.
My playground? Backend systems, API integrations, and complex data flows. I've worked across healthcare, gaming, and cybersecurity — industries where "it works on my machine" isn't good enough.
Armed with a Bachelor's in Automation from Lviv Polytechnic and a love for systematic problem-solving, I bring structure to chaos and clarity to complexity.
Skills & Tools
My Testing Arsenal
Quality Control
- Test Design & Execution
- Requirement Analysis
- Defect Management
- Test Automation Basics
API & Backend
- Postman & Fiddler
- REST API Testing
- Log Analysis
- Integration Testing
Databases
- PostgreSQL & SQL Server
- MongoDB & Redis
- BigQuery & Snowflake
- Elasticsearch
Tools & Platforms
- Jira & TestRail
- Xcode & Android Studio
- BrowserStack & VMware
- Chrome DevTools
Experience
Where I've Made Impact
Project: Morphisec — Israeli cybersecurity platform
- Validating system stability across multiple databases and complex data flows
- Security-oriented testing: identifying vulnerabilities, validating protection mechanisms
- API testing with Postman, automated flows, and feature flag verification
- Root-cause analysis and log verification across environments
Project: Huckleberry — Sleep tracking app (iOS, Android, Web)
- Backend testing: API integrations, data consistency, server logic validation
- Collaboration with USA-based product team and developers
- Ensured release quality for thousands of end users
Canadian digital healthcare platform
- Compliance testing for governmental healthcare regulations
- Data security and user privacy validation
Multiple game projects: Match3, City Builder, Blockchain gambling
- Full QA cycle ownership: from requirements to release
- Security testing for Ethereum-based transactions
- Mentored newcomers and scaled QA processes
Projects
Products I've Helped Ship
Morphisec
Enterprise endpoint protection platform using Moving Target Defense technology. Stops zero-day threats, fileless attacks, and ransomware before they execute.
My focus: System integrity validation, security testing, database consistency, and log verification across complex workflows.
Visit Morphisec →
Huckleberry
Sleep tracking app helping thousands of parents worldwide. Available on iOS, Android, and Web — like having a sleep consultant in your pocket.
My focus: Backend testing, API integrations, data consistency validation, and ensuring release quality for thousands of end users.
Visit Huckleberry →Get In Touch
Let's Build Something Reliable
Looking for a QA engineer who treats your product like it's their own? I'm currently exploring new opportunities and would love to hear about your project.
Say Hello