Yaroslav S.

• Established end-to-end quality ownership for a high-frequency DeFi routing engine, overseeing quality throughout the software development lifecycle
• Led QA for core trading workflows, aligning product and engineering teams through early requirement reviews and Three Amigos sessions
• Built internal monitoring dashboards using AI-assisted development tools, enabling real-time auditing of execution quality and slippage
• Performed SQL-based data validation to ensure routing accuracy, fee consistency, and execution integrity across multiple data sources
• Implemented quality gates and testing standards across web, desktop, and Telegram trading applications
• Investigated complex production issues, bridging business requirements and technical implementation to identify and resolve edge cases

• Owned quality assurance and data integrity for a complex B2B web platform, ensuring stable and reliable releases
• Reviewed requirements, refined acceptance criteria, and improved documentation to eliminate gaps before development
• Validated data synchronization across Salesforce, Directus, Amazon S3, Airtable, and Google Drive
• Led smoke and regression testing, improving release quality and delivery processes
• Collaborated with product, marketing, and media teams to align testing efforts with business objectives

• Played a key role in scaling a leading developer platform, evolving from QA Engineer to QA lead and mentor
• Designed and implemented QA processes, reducing defect leakage through improved regression testing and early requirement reviews
• Led the testing strategy for a custom Applicant Tracking System (ATS), collaborating closely with internal stakeholders
• Interviewed, onboarded, and mentored QA engineers while promoting testing best practices across the team
• Used Datadog, Sentry, and Laravel Horizon for production monitoring and troubleshooting
• Performed API and database testing (MySQL, DynamoDB) to ensure data integrity and system reliability

• Validated laboratory CRM and genomic data processing systems, focusing on mutation detection workflows and clinical business logic
• Designed state transition maps to ensure consistency across the sample lifecycle, from collection to report generation
• Tested AWS serverless architectures, including Lambda, SQS, S3, and DynamoDB
• Performed SQL-based data validation and API testing using DataGrip and Postman to verify data integrity and service communication
• Collaborated within a 25+ member QA team, maintaining test documentation and traceability in Xray while ensuring HIPAA compliance

As part of Swarming technology company, Yaroslav was successfully handling 7 projects simultaneously, what proves his ability to multitasking.

• Documented and organized test processes: checklists, bug reports, test flows;

• Executed regression and sanity test sessions Coached interns;

• Worked primarily with CMS Magento 1 and 2.

On the beginning of Yaroslav's career, he dived into development as Front-End developer which proves his deep knowledge of development processes, especially for web projects.

• Developed pages using HTML, CSS, and JavaScript.