Search Results

End-to-end testing specialist using Playwright. Generates, maintains, and runs E2E tests. Manages test journeys, quarantines flaky tests, and uploads artifacts.

When the user needs to generate, iterate, or scale ad creative for paid advertising. Use when they say 'write ad copy,' 'generate headlines,' 'create ad variations,' 'bulk creative,' 'iterate on ads,' 'ad copy validation,' 'RSA headlines,' 'Meta ad copy,' 'LinkedIn ad,' or 'creative testing.' This is pure creative production — distinct from paid-ads (campaign strategy). Use ad-creative when you need the copy, not the campaign plan.

Regression testing strategies for AI-assisted development. Sandbox-mode API testing without database dependencies, automated bug-check workflows, patterns to catch blind spots where the same model writes and reviews code.

Use when the user asks to automate browser tasks, scrape websites, fill forms, capture screenshots, extract structured data from web pages, or build web automation workflows. NOT for testing — use playwright-pro for that.

C++ testing with GoogleTest and CTest: test fixtures, parameterized tests, mocking with GMock, sanitizers, and CMake integration.

Implements chaos engineering practices including fault injection, game days, steady-state hypothesis testing, and resilience validation following Principles of Chaos.

Django testing strategies with pytest-django, TDD methodology, factory_boy, mocking, coverage, and testing Django REST Framework APIs.

Designs and implements feature flag systems with progressive rollout, A/B testing integration, kill switches, and flag lifecycle management across environments.

Go testing patterns: table-driven tests, subtests, benchmarks, fuzzing, httptest for API testing, testify assertions, and coverage measurement with TDD methodology.

Kotlin Coroutines and Flow patterns for Android and KMP: structured concurrency, Flow operators, StateFlow, error handling, and testing.

Ktor server: routing DSL, plugins, authentication, Koin DI, kotlinx.serialization, WebSockets, and testApplication testing.

Kotlin testing with Kotest, MockK, coroutine testing, property-based testing, and Kover coverage with TDD methodology.

Test-driven development for Laravel with PHPUnit and Pest: factories, database testing, fakes, and coverage targets.

Perl testing with Test2::V0, Test::More, prove runner, mocking, coverage with Devel::Cover, and TDD methodology.

Playwright E2E testing patterns: Page Object Model, test configuration, CI/CD integration with artifact capture (screenshots, videos, traces), flaky test quarantine, and critical user flow coverage strategies.

Systematic prompt improvement pipeline: structured prompt analysis, A/B testing patterns, metric-driven iteration, and prompt versioning for production LLM applications.

Python testing with pytest: fixtures, parametrize, mocking with unittest.mock, hypothesis property-based testing, coverage with pytest-cov, and TDD methodology for Python applications.

Rust testing patterns: unit tests, integration tests, async testing with tokio::test, property-based testing with proptest, mocking strategies, and coverage measurement with cargo-tarpaulin.

Protocol-based dependency injection for testable Swift: mock file system, network, and external APIs using focused protocols and Swift Testing.

Toolkit for interacting with and testing local web applications using Playwright. Covers functional testing, accessibility checks, and visual regression across browsers.

Sandbox-mode regression testing for AI-assisted code

GoogleTest, CTest, GMock, sanitizers

Table-driven tests, benchmarks, fuzzing

Kotest, MockK, coroutine testing, Kover

Test2::V0, prove, Devel::Cover

Systematic prompt improvement with A/B testing

pytest, fixtures, mocking, hypothesis

Unit, integration, proptest, async testing

Protocol-based DI, mock APIs