Claude Skills by aj-geddes

Implement offline-first mobile apps with local storage, sync strategies, and conflict resolution. Covers AsyncStorage, Realm, SQLite, and background sync patterns.

Create and manage mocks, stubs, spies, and test doubles for isolating unit tests from external dependencies. Use for mock, stub, spy, test double, Mockito, Jest mocks, and dependency isolation.

Deploy machine learning models to production using Flask, FastAPI, Docker, cloud platforms (AWS, GCP, Azure), and model serving frameworks

Optimize hyperparameters using grid search, random search, Bayesian optimization, and automated ML frameworks like Optuna and Hyperopt

Manage monorepo architectures using Lerna, Turborepo, and Nx. Configure workspaces, dependency versioning, and cross-package testing.

Design and implement multi-cloud strategies spanning AWS, Azure, and GCP with vendor lock-in avoidance, hybrid deployments, and federation.

Evaluate test suite quality by introducing code mutations and verifying tests catch them. Use for mutation testing, test quality, mutant detection, Stryker, PITest, and test effectiveness analysis.

Build NLP applications using transformers library, BERT, GPT, text classification, named entity recognition, and sentiment analysis

Debug network issues using browser tools and network analysis. Diagnose connection problems, latency, and data transmission issues.

Configure network security groups and firewall rules to control inbound/outbound traffic and implement network segmentation.

Design and architect neural networks with various architectures including CNNs, RNNs, Transformers, and attention mechanisms using PyTorch and TensorFlow

Configure Nginx web server for high-performance reverse proxy, load balancing, SSL/TLS, caching, and API gateway functionality.

Build production-ready Express.js servers with middleware, authentication, routing, and database integration. Use when creating REST APIs, managing requests/responses, implementing middleware chains, and handling server logic.

Design NoSQL database schemas for MongoDB and DynamoDB. Use when modeling document structures, designing collections, or planning NoSQL data architectures.

Implement secure OAuth 2.0, OpenID Connect (OIDC), JWT authentication, and SSO integration. Use when building secure authentication systems for web and mobile applications.

Integrate payment gateways like Stripe, PayPal, and Square with backends for payment processing, subscription management, and webhook handling. Use when building e-commerce platforms, implementing billing systems, and handling payments securely.

Ethical hacking and security testing methodologies using penetration testing tools, exploit frameworks, and manual security validation. Use when assessing application security posture and identifying exploitable vulnerabilities.

Identify and debug performance regressions from code changes. Use comparison and profiling to locate what degraded performance and restore baseline metrics.

Design and execute performance tests to measure response times, throughput, and resource utilization. Use for performance test, load test, JMeter, k6, benchmark, latency testing, and scalability analysis.

Integrate multiple programming languages using FFI, native bindings, gRPC, or language bridges. Use when combining strengths of different languages or integrating legacy systems.

Profile application performance, identify bottlenecks, and optimize hot paths using CPU profiling, flame graphs, and benchmarking. Use when investigating performance issues or optimizing critical code paths.

Build progressive web apps using service workers, web manifest, offline support, and installability. Use when creating app-like web experiences.

Estimate project scope, timeline, and resource requirements using multiple estimation techniques including bottom-up, top-down, and analogous estimation methods for accurate project planning.

Set up Prometheus monitoring for applications with custom metrics, scraping configurations, and service discovery. Use when implementing time-series metrics collection, monitoring applications, or building observability infrastructure.

Design property-based tests that verify code properties hold for all inputs using automatic test case generation. Use for property-based, QuickCheck, hypothesis testing, generative testing, and invariant verification.

Automate pull request workflows with templates, checklists, auto-merge rules, and review assignments. Reduce manual overhead and improve consistency.

Implement push notifications for iOS and Android. Covers Firebase Cloud Messaging, Apple Push Notification service, handling notifications, and backend integration.

Implement query caching strategies to improve performance. Use when setting up caching layers, configuring Redis, or optimizing database query response times.

Implement rate limiting, throttling, API quotas, and backpressure mechanisms to protect services from abuse and ensure fair resource usage. Use when building APIs, preventing DOS attacks, or managing system load.

Design scalable React components using functional components, hooks, composition patterns, and TypeScript. Use when building reusable component libraries and maintainable UI systems.

Build cross-platform mobile apps with React Native. Covers navigation with React Navigation, state management with Redux/Context API, API integration, and platform-specific features.

Implement reactive programming patterns using RxJS, streams, observables, and backpressure handling. Use when building event-driven UIs, handling async data streams, or managing complex data flows.

Implement real-time functionality using WebSockets, Server-Sent Events (SSE), or long polling. Use when building chat applications, live dashboards, collaborative editing, notifications, or any feature requiring instant updates.

Build recommendation systems using collaborative filtering, content-based filtering, matrix factorization, and neural network approaches

Build collaborative and content-based recommendation engines for product recommendations, personalization, and improving user engagement

Modernize and improve legacy codebases while maintaining functionality. Use when you need to refactor old code, reduce technical debt, modernize deprecated patterns, or improve code maintainability without breaking existing behavior.

Plan, coordinate, and execute software releases across environments. Manage versioning, rollout strategies, rollback procedures, and stakeholder communication for smooth deployments.

Systematically collect, document, and validate requirements from stakeholders. Ensure clarity, completeness, and agreement before development begins to reduce scope creep and rework.

Create responsive layouts using CSS Grid, Flexbox, media queries, and mobile-first design. Use when building adaptive interfaces that work across all devices.

Facilitate effective retrospectives to capture lessons learned, celebrate successes, and identify actionable improvements for future iterations.

Develop Ruby on Rails applications with models, controllers, views, Active Record ORM, authentication, and RESTful routes. Use when building Rails applications, managing database relationships, and implementing MVC architecture.

Create operational runbooks, playbooks, standard operating procedures (SOPs), and incident response guides. Use when documenting operational procedures, on-call guides, or incident response processes.

Implement secrets management with HashiCorp Vault, AWS Secrets Manager, or Kubernetes Secrets for secure credential storage and rotation.

Implement automated secrets rotation for API keys, credentials, certificates, and encryption keys. Use when managing secrets lifecycle, compliance requirements, or security hardening.

Implement comprehensive security audit logging for compliance, forensics, and SIEM integration. Use when building audit trails, compliance logging, or security monitoring systems.

Conduct comprehensive security compliance audits for SOC 2, GDPR, HIPAA, PCI-DSS, and ISO 27001. Use when preparing for certification, annual audits, or compliance validation.

Create security policies, guidelines, compliance documentation, and security best practices. Use when documenting security policies, compliance requirements, or security guidelines.

Configure HTTP security headers including CSP, HSTS, X-Frame-Options, and XSS protection. Use when hardening web applications against common attacks.

Identify security vulnerabilities through SAST, DAST, penetration testing, and dependency scanning. Use for security test, vulnerability scanning, OWASP, SQL injection, XSS, CSRF, and penetration testing.

Implement semantic versioning (SemVer) with automated release management. Use conventional commits, semantic-release, and version bumping strategies.