YAROSLAV
BABCHYNSKYI

Fintech · cross-border FX & stablecoin payments

• ·Tested FX, stablecoin settlement and reconciliation flows across 6 currency pairs for 50,000+ users.
• ·Built a Postman collection covering 210+ API endpoints for payments, reconciliation and provider integrations.
• ·Built a quality gate enforcing release criteria, coverage requirements and regression completion — defect leakage down ~30%.
• ·Documented 20+ features end-to-end as the single source of truth across Product, Engineering and QA.

Payment → FX → Settlement → Provider → Reconciliation → Quality gate → Production

Crypto · AI · SaaS · web & mobile

• ·Shipped MVPs across 3 product lines on schedule with 0 critical defects at launch.
• ·Wrote acceptance criteria for 50+ features, translating stakeholder requirements into testable conditions.
• ·Embedded QA into design and requirements reviews — mid-sprint rework down ~35%.

Requirements → Acceptance criteria → QA review → Design → Development → Testing → Release

Transportation management system · web & mobile

• ·Shift-left testing and early requirements validation cut production hotfixes by ~30%.
• ·Automated test data generation cut manual preparation time by ~70%; release reports for 15+ stakeholders.
• ·Led QA for 10+ releases with on-time delivery and stable production deployments.

B2B SaaS

• ·Implemented log-based testing, improving defect investigation and QA–engineering feedback loops.
• ·Regression testing time down ~50% through better reporting standards and execution workflows.

EdTech · web & mobile · ERP

• ·Release testing time down 30% through earlier validation and defect detection.
• ·Supported customer demos and translated user feedback into tracking and analytics requirements.