Testing skills for software engineers: unit testing, integration testing, E2E, TDD, test data management, and contract testing.
Create a comprehensive test plan for a feature or system: coverage targets, test types, tooling, and CI integration
Review existing tests for quality, completeness, and anti-patterns
Write tests for existing code: analyze the code, identify cases to test, and generate complete test file
Contract testing with Pact: consumer-driven contracts, provider verification, preventing breaking API changes. Use when building microservices or APIs consumed by multiple clients.
E2E testing with Playwright: test structure, page objects, authentication, visual testing, CI configuration. Use when writing or improving E2E tests for web applications.
Integration testing for Node.js APIs: Supertest setup, database integration with MongoMemoryServer, test isolation, seed data patterns, and testing middleware. Use when writing API integration tests.
Test-Driven Development workflow: Red-Green-Refactor cycle, when to apply TDD, starting with the simplest case, triangulation, and common pitfalls. Use when practicing TDD or introducing it to a team.
Test data management: factory functions, faker.js, fixture files, database seeding, test isolation, and avoiding flaky tests from shared state. Use when designing test data strategy for a project.
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80+ SDE skills and 40+ chained workflows across 9 plugins — system design, code quality, architecture, debugging, execution, MERN stack, testing, DevOps, and career growth. JavaScript-first.
Designed for Claude Code and Cowork. Skills compatible with other AI assistants.
Building a new system? -> /design
Reviewing code or a PR? -> /review-code
Writing an architecture decision? -> /write-adr
Building a MERN feature? -> /mern-feature
Debugging a production issue? -> /postmortem
Breaking an epic into tickets? -> /write-tickets
Prepping for an interview? -> /mock-design
claude plugin marketplace add yourusername/sde-skills
for plugin in sde-*/; do
cp -r "$plugin/skills/"* ~/.gemini/skills/ 2>/dev/null
done
| Plugin | Skills | Commands | Domain |
|---|---|---|---|
sde-system-design | 8 | 4 | HLD, estimation, data modeling, API design |
sde-code-quality | 8 | 4 | PR review, refactoring, SOLID, patterns |
sde-architecture | 7 | 4 | ADRs, migrations, resilience, observability |
sde-debugging | 6 | 4 | RCA, postmortems, logs, incident response |
sde-execution | 7 | 5 | Tickets, estimation, deployment, runbooks |
mern-stack | 12 | 6 | MongoDB, Express, React, Node.js, JWT |
sde-testing | 6 | 3 | Unit, integration, E2E, TDD, contracts |
sde-devops | 6 | 3 | CI/CD, Docker, Kubernetes, Terraform |
sde-career | 8 | 5 | Interviews, promotion, specs, feedback |
| I want to... | Command |
|---|---|
| Design a system end-to-end | /design [system] |
| Estimate capacity and scale | /estimate [system] |
| Design a REST API contract | /design-api [resource] |
| Design a data model | /model-data [domain] |
| Review my PR before submitting | /review-code [diff] |
| Refactor messy code safely | /refactor [code] |
| Spot and fix code smells | /smell-check [code] |
| Plan tests for a feature | /test-strategy [feature] |
| Write an architecture decision | /write-adr [decision] |
| Plan a safe migration | /plan-migration [from to] |
| Write a blameless postmortem | /postmortem [incident] |
| Debug a production issue | /debug [symptom] |
| Respond to a live incident | /incident [description] |
| Break an epic into tickets | /write-tickets [epic] |
| Write release notes | /release-notes [commits] |
| Create a deployment checklist | /deploy-plan [service] |
| Write an on-call runbook | /write-runbook [service] |
| Build a full MERN feature | /mern-feature [feature] |
| Build JWT auth (MERN) | /mern-auth |
| Design a MongoDB schema | /mern-schema [domain] |
| Build an Express REST API | /mern-api [resource] |
| Build a React component | /mern-component [component] |
| Review MERN code | /mern-review [code] |
| Plan a full test suite | /test-plan [feature] |
| Generate tests for my code | /write-tests [code] |
| Design a CI/CD pipeline | /design-pipeline [service] |
| Dockerize a service | /dockerize [service] |
| Write Terraform IaC | /write-iac [infrastructure] |
| Practice system design | /mock-design [system] |
| Practice behavioral interview | /mock-behavioral |
| Write a promotion document | /write-promo [level] |
| Write a technical spec | /write-spec [feature] |
| Review my resume | /review-resume |
These rules are encoded into every skill and command output.
MIT
Career growth skills for software engineers: interview preparation, promotion planning, technical writing, feedback, and 1:1s.
Find, fix, and prevent production issues. Root cause analysis, blameless postmortems, log analysis, performance debugging, memory leak detection in Node.js, and incident response.
DevOps skills for software engineers: CI/CD pipelines, Docker, Kubernetes basics, infrastructure as code, monitoring/alerting, and secrets management.
Design scalable, resilient, production-grade systems from first principles. HLD methodology, capacity estimation, data modeling, API design, caching, message queues, distributed systems, and database selection.
Make durable architectural decisions. ADRs, migration planning, tech debt classification, service decomposition (DDD), resilience patterns, observability design, and event-driven architecture.
npx claudepluginhub chavangorakh1999/sde-skills --plugin sde-testingTest strategy, TDD, unit/integration/property-based testing, test architecture, mutation testing, and test data management.
Automatically generate comprehensive unit tests from source code with multiple testing framework support
Testing workflow skill for high-value test discovery, strategy selection, focused implementation, realistic workload generation, strict review, and suite health diagnostics.
Test planning and strategy methodologies for pre-code quality assurance. Includes test pyramid design, test case techniques, acceptance criteria, test data strategy, and automation ROI analysis.
Generate comprehensive unit and integration tests with full coverage
Comprehensive skill pack with 66 specialized skills for full-stack developers: 12 language experts (Python, TypeScript, Go, Rust, C++, Swift, Kotlin, C#, PHP, Java, SQL, JavaScript), 10 backend frameworks, 6 frontend/mobile, plus infrastructure, DevOps, security, and testing. Features progressive disclosure architecture for 50% faster loading.