Looking for a job

Michaela Yoshimatsu

@michaelayoshimatsu

Embedded Test Engineer at Sonova AG, testing myPhonak and ELR and uncovering defects in hearing-aid app features.

At Sonova AG, I test Android and iOS apps including myPhonak and ELR in a regulated medical-device environment. My work covers Bluetooth pairing, hearing-instrument connectivity, audio streaming, and app functionality.

For Remote Support, I initiated a review after finding gaps in specifications and test coverage, uncovering defects and contributing to improvements in feature quality. For HD Finder, I mapped location-tracking scenarios and combined structured test design with field testing to identify issues.

I design and maintain functional, exploratory, negative, and recovery test cases, investigate defects, and verify fixes through confirmation and regression testing. I also review requirements with product owners, requirements engineers, and developers, and maintain testing documentation.

Previously, at Adia – Just in time Staffing AG, I tested mobile apps, web products, and an internal operations system. I’m currently expanding my knowledge of agentic AI-driven testing and have written Gherkin scenarios for AI-driven test automation.

Experience

Work history, roles, and key accomplishments

Current

Test Engineer

Current

Sonova AG

May 2021 - Present (5 years 6 months)

Performed manual frontend testing of Android and iOS applications in a regulated medical device environment, covering Bluetooth pairing, connectivity, audio streaming, and app functionality. Reviewed requirements, designed and executed test cases, investigated defects, and maintained test documentation.

Manual Testing Android iOS Bluetooth Jira Polarion Confluence Agile Scrum Test Case Design Defect Tracking Regression Testing Exploratory testing Negative Testing Backup And Recovery System Testing Requirements Review Scrum Master

QA Test Engineer

Adia – Just in time Staffing AG

Nov 2019 - Apr 2021 (1 year 5 months)

Created end-to-end and checklist-based tests for mobile apps, web products, and an internal operations system. Performed functional, regression, confirmation, and system-level testing, investigated issues, and retested fixes.

End To End Testing Checklist based testing Functional Testing Regression Testing Confirmation Testing System Testing Issue investigation Technical Support

Customer Success Manager (B2B/B2C)

Adia – Just in time Staffing AG

Jul 2019 - Oct 2019 (3 months)

Supported the launch of the London market, matching temporary workers with assignments and managing client and worker expectations. Resolved operational questions and issues while coordinating with clients and workers.

Customer Success B2B B2C Client Management Operations Issue Resolution

Customer Support Specialist

Spark Networks Services GmbH

Dec 2017 - Feb 2019 (1 year 2 months)

Provided customer support for EliteSingles, eDarling, and JDate across Czech, Slovak, and English-speaking markets via a ticketing system. Reviewed identity-verification cases and suspicious accounts, contributed to localisation, and helped train new colleagues.

Customer Support Ticketing Systems Identity Verification Localization Training