Ondřej Lasák

• Reviewed and audited an existing AI-first Playwright/TypeScript/Python automation framework, improving scalability, reliability, and long-term maintainability.
• Refactored AI-generated codebases into a scalable and standardised architecture using predefined prompts, reusable workflows, and newly designed meta-prompt templates.
• Enhanced integration of AI-driven development and testing tools, including Codex, Codex CLI, Playwright-MCP, and Playwright-CLI, defining reusable configurations, agent rules, and automation standards.
• Designed and implemented tools, utilities, and Agent Skills for AI agents, enabling consistent interaction with the framework and supporting fully automated QA workflows.
• Developed and refined AI-powered test generation workflows for creating test cases, execution logic, and automation scenarios directly from specifications, existing codebases, and meta-prompts.
• Extended test-reporting capabilities with advanced debugging and observability features, including network monitoring, session/cookie state tracking, and detailed test-step execution analysis.
• Optimised framework execution for both fast and constrained environments through centralised configuration management, serial/parallel execution strategies, and dedicated proxy-based setups.

• Oversaw QA process standards for 14 applications, ensuring consistency and quality across all projects.
• Assisted development teams with test estimations, enhancing project planning and execution.
• Provided QA customer support and established project standards, facilitating smoother transitions.
• Developed proof of concepts for testing using Playwright and K6 frameworks, driving innovation in testing practices.

• Designed and implemented manual and automated test cases across multiple project domains.
• Led a team of 4 QA engineers in building and maintaining a Selenium C# testing framework, reducing manual regression testing of automated runs by 95%.
• Executed over 30,000 regression E2E tests monthly, optimizing execution time by 80% through test codebase refactoring and execution flow optimization.
• Enhanced test process efficiency and automation coverage, decreasing average open defect count by 85% through quality process standardization.
• Performed ROI analysis of automation coverage, identifying high-value automation areas for maximum efficiency.
• Crafted accurate test estimations for new feature releases with only ±10% deviation from actual execution effort, including projected automation coverage.
• Managed test planning, tracking, and reporting in Azure DevOps, ensuring transparency and continuous delivery readiness.
• Conducted load and performance testing using JMeter, K6, and Postman; reduced bottlenecks and improved throughput by 90% on critical parts.
• Managed and optimized Azure build agents and CI infrastructure.
• Defined and enforced QA standards, coding guidelines, and review processes across the team.
• Provided mentorship, code and PR reviews, and task assignments for QA engineers.
• Represented the QA team in stakeholder reviews and client calls.

• Developed automated UI end-to-end test suites and scenarios using C# Telerik TestStudio.
• Achieved an 80% reduction in manual execution time for regression testing through efficient test automation.
• Enhanced codebase efficiency by minimizing duplication of Page Objects in the Page Object Model, leading to a 50% decrease in execution time.
• Created JMeter scenarios for load testing and data quality measurement, ensuring robust performance during bulk data imports.

• Analyzed and designed over 100 test cases in Enterprise Architect.
• Developed over 2,500 integration and contract tests.
• Reduced manual regression testing by 90%.
• Improved test regression process by detailed reporting and acceptance protocols, increasing efficiency by 50%.
• Load and stress tested over 250 critical endpoints.
• Crafted test-data strategy for API flow E2E tests covered by 100% automation.

• Conducted comprehensive testing of software products linked to intelligent hardware.
• Created detailed reports on testing outcomes and configuration of software and hardware products.
• Tested new releases of the Intelligent Information System (IIS) for data collection from smart electricity meters.
• Configured various smart meters for diverse applications, from small residences to large facilities.

• Collaborated in a six-member international team, leveraging diverse expertise from various countries and universities.
• Engaged in innovative product development to create cutting-edge solutions for Bang & Olufsen.
• Fostered a culture of creativity and collaboration, enhancing team dynamics and project outcomes.

• Provided comprehensive technical support, ensuring smooth operation of hardware and software systems.
• Managed and repaired hardware, enhancing the reliability of IT infrastructure.
• Supported software installations and driver updates for PCs and printers.
• Optimized network administration processes.

• Installed and configured client PCs to connect seamlessly to WiFi networks.
• Set up network settings and installed WiFi routers in residential facilities.
• Prepared UTP cables and assisted in installation of optical WiFi antennas.
• Measured WiFi signal strength to ensure optimal performance for clients.

Playwright/TypeScript poly-repository test automation framework for Vendavo CPQ product across multiple client variants.

• Poly-repository architecture (Common + Client Sites)
• POM hierarchy: element → component → page
• Biome + ESLint + Prettier for code quality
• Deno runtime for isolated test execution

Proof of Concept for Generative AI-driven API testing using LLMs for test data synthesis, assertion generation, and coverage optimization.

• LLM-generated test data synthesis
• Automated assertion generation
• Coverage analysis and optimization

QA for DAC6 — the EU Directive on cross-border tax arrangements.

QA for a system digitizing documents and extracting/processing structured data from unstructured sources.

Information system for distribution of heat and consumption for networks in the Slovak Republic.

• Developed automated UI end-to-end test suites using C# Telerik TestStudio for the distribution network IS.
• Created JMeter load test scenarios for bulk data import performance validation.

Electronic highway vignette system for the Slovak Republic (NDS / Skytoll).

• Built and maintained regression test suites using C# Telerik TestStudio for the national e-vignette platform.
• Achieved 80% reduction in manual regression execution time through Page Object Model optimisation.

Testing for the Czech Ministry of Transport national driving theory test platform.

Testing for the Czech Ministry of Transport state technical inspection (STK) information system.

Testing for the coordination centre for departmental medical information systems (Ministry of Interior).

Testing for the national registers authority (MVČR, Ministry of Interior, eGovernment).