Senior QA Engineer · 9+ Years Experience
Building confidence in complex software.
Manual Testing · API Testing · AI Quality Assurance
I'm Elena Stefanovska, a QA professional with 9+ years of
experience testing web, mobile, SaaS, and API-driven
applications. I focus on understanding complex business
workflows, identifying risks, and helping teams deliver
reliable software.
01 / About Me
Quality starts with understanding.
My approach to QA goes beyond checking whether a feature works.
I aim to understand the business purpose behind the software,
explore dependencies, identify risks, and validate how complete
processes behave in real-world scenarios.
My experience spans SaaS applications, financial and payment
workflows, APIs, event-management platforms, and AI-assisted
functionality. I have also worked closely with developers,
product stakeholders, and international clients.
02 / Core Expertise
What I bring to the table.
A combination of technical testing, analytical thinking,
business understanding, and collaborative problem-solving.
Software Quality Assurance
- Functional and regression testing
- Integration and end-to-end testing
- Exploratory and risk-based testing
- Test planning and scenario design
- Defect investigation and release validation
Technical & API Testing
- REST APIs, HTTP, and JSON
- Postman and Swagger / OpenAPI
- Third-party integrations
- Chrome DevTools and Charles Proxy
- Basic SQL and data validation
Product & Business Quality
- Requirements analysis
- Complex business and payment workflows
- Cross-module testing
- Client and stakeholder communication
- Risk identification and prioritization
AI Quality Assurance
- Recommendation relevance assessment
- AI-assisted classification review
- Confidence-level evaluation
- False positive and negative identification
- Human validation and correction of AI results
03 / Selected Work
Real systems. Meaningful challenges.
Selected areas of professional experience demonstrating
different approaches to software quality.
Business Systems
Complex Financial & Business Workflows
Testing interconnected inventory, accounting, finance,
production, and payment-related processes.
Focus: business rules, data consistency, integration
scenarios, negative testing, and risk-based validation.
AI Quality
AI Recommendations in the Event Industry
Validating AI-assisted people recommendations within
event-management functionality during my work at BSS.
Focus: relevance, expected business behavior, unexpected
results, and communication with development teams.
Robotics & Computer Vision
Confidential Robotics Engagement (NDA)
An anonymized overview of work involving SLAM-based
mapping, remapping, environment configuration,
robot navigation validation, and operational monitoring.
Also includes computer-vision detection review,
classification validation, and investigation of
inaccurate AI results.
04 / My Approach
How I approach software quality.
01
Understand
Analyze requirements, user expectations, and business objectives.
02
Assess Risks
Identify critical workflows, dependencies, and potential failures.
03
Design
Select test techniques and prepare meaningful scenarios.
04
Execute
Validate functionality, integrations, and complete user journeys.
05
Investigate
Analyze defects, communicate findings, and verify fixes.
06
Release Readiness
Review regression coverage, remaining risks, and release quality.
06 / Professional Experience
My professional journey.
Over nine years of software quality assurance experience,
complemented by business analysis, client support,
and digital marketing. Explore my roles and responsibilities
across complex software systems and technology projects.
Jan 2025 – Present · Contract
Inventra
Manual QA Tester | Playwright Automation in Progress
Manual testing of a web-based inventory, finance,
accounting, and production management platform.
- Review and prioritize an audited QA test suite
based on business dependencies, risk, and E2E workflows.
- Design positive, negative, boundary, validation,
and business-rule test scenarios.
- Test tenant settings, companies, offices, products,
banking details, and inventory configuration.
- Report functional, navigation, UX, and localization
issues in GitHub with reproduction steps, actual
and expected results, and acceptance criteria.
- Prepare structured test data and E2E scenarios
involving product setup, stock imports, commercial
documents, payments, open items, and accounting records.
- Collaborate with the project owner to clarify
requirements and improve application usability.
- Prepare selected regression scenarios for future
Playwright automation and SQL database validation.
May 2026 – Aug 2026
Confidential Robotics Engagement (NDA)
AI QA Specialist – Robotics & Computer Vision
Anonymized professional experience involving autonomous
mobile robotics, SLAM mapping, navigation validation,
and AI-assisted computer vision.
SLAM Mapping & Robot Operations
- Performed SLAM mapping and remapping.
- Validated map continuity, spatial accuracy,
and localization stability.
- Configured navigation environments, waypoints,
scene boundaries, and avoidance zones.
- Reviewed robot traversal and navigation behavior.
- Investigated localization and operational issues.
- Performed hands-on robot driving
and operational monitoring.
AI & Computer Vision Validation
- Reviewed AI-generated object and scene detections.
- Identified false positives and missed detections.
- Evaluated classification results
and confidence levels.
- Investigated inconsistent predictions
and edge cases.
- Corrected inaccurate detections
and reviewed saved corrections.
Aug 2017 – Apr 2026
Babylon Software Solution (BSS)
QA Engineer · Business Analyst & Client Support
· Digital Assistant
Experience across SaaS, web, mobile, payment systems,
API-driven applications, event-industry platforms,
business analysis, and digital marketing.
QA Engineer
Aug 2017 – Apr 2026
- Developed test plans and testing strategies
based on product requirements.
- Designed functional, non-functional,
negative, and edge-case scenarios.
- Performed functional, regression, integration,
exploratory, and end-to-end testing.
- Validated web, mobile, and API-driven applications.
- Tested REST APIs and third-party integrations.
- Verified payment workflows, transaction states,
and complex business rules.
- Performed cross-browser, cross-device,
usability, and performance-related checks.
- Reported defects, verified fixes,
and maintained testing documentation.
- Participated in requirements and design reviews.
- Collaborated with developers, designers,
and stakeholders.
- Contributed to release readiness,
quality reporting, and process improvements.
- Provided guidance and support
to other QA team members.
- Validated landing pages, tracking,
forms, UTMs, and conversion paths.
Event-Industry Platform Experience
Professional project experience within BSS
- Tested event-management workflows
and related integrations.
- Performed requirements analysis
and product coordination.
- Validated AI-assisted people recommendations.
- Reviewed recommendation relevance
and business-context consistency.
- Tested audience-related and
marketing campaign functionality.
- Collaborated with stakeholders
and technical teams.
Business Analyst & Client Support
Apr 2019 – Apr 2026
- Acted as a primary point of contact
for international clients.
- Bridged communication between clients
and technical teams.
- Translated business needs into actionable
QA and development tasks.
- Clarified requirements and supported
issue investigation.
- Supported post-deployment maintenance
and product improvements.
- Coordinated communication throughout
project delivery and support.
Digital Assistant
Aug 2017 – Dec 2022
- Created SEO-optimized blog posts
and website content.
- Created social media content
for company products.
- Worked on Facebook/Meta paid ads.
- Supported social media
and content marketing campaigns.
- Assisted with campaign performance
monitoring and optimization recommendations.
- Coordinated marketing content
with campaign objectives.
- Supported audience engagement activities.
Aug 2022 – Nov 2022
TAPISO
Quality Assurance Tester · Part-time
Quality assurance for e-commerce platforms
developed with Magento and WordPress.
- Validated e-commerce user flows.
- Performed functional and regression testing.
- Checked localization and consistency
across different markets.
- Performed cross-browser
and cross-device validation.
- Collaborated with developers
to validate fixes.
- Identified usability issues
and supported stable releases.
May 2016 – Apr 2017
WHYOO
Marketing Advertising Specialist
Digital advertising, client communication,
promotional content, and website quality validation.
- Managed communication with advertising clients.
- Presented advertising services, media packages,
and banner-placement opportunities.
- Advised clients on advertising formats
and traffic-driving opportunities.
- Coordinated advertising placements
across company-owned websites.
- Performed product photography
and created promotional descriptions.
- Created and published social media content.
- Supported organic social media promotion.
- Performed pre-launch functional testing
of landing pages and web tools.
- Supported SEO and QA reviews
of digital campaign assets.
- Validated UI components and user flows
in WordPress and CMS-based websites.