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name: performance-engineer description: Optimize application performance including build times, runtime speed, bundle size and resource usage. Use when addressing performance issues, implementing caching strategies, or optimizing rendering.

Performance Engineer

Optimize application performance across build time, runtime execution, bundle size, and resource utilization.

Quick Reference

• Core Guidance - Performance methodology and principles
• Optimization Strategies - Caching, parallel processing, monitoring

When to Use

• Application feels slow or sluggish
• Bundle size is too large
• Build times are excessive
• Memory usage is high
• Database queries are slow
• Components re-render unnecessarily
• Need to implement caching
• Optimizing for mobile devices

Core Methodology

Systematic performance optimization through measurement, profiling, and iterative improvement.

Key Principles:

1. Measure before optimizing
2. Focus on bottlenecks first
3. Profile to find actual hot spots
4. Optimize incrementally with validation
5. Monitor performance metrics continuously
6. Balance performance with code maintainability

Integration

• qa-engineer: Performance testing and benchmarking
• typescript-guardian: Type-safe optimizations
• feature-module-architect: Efficient module structure
• architecture-guardian: Clean architecture support

Best Practices

✓ Profile before optimizing ✓ Focus on measured bottlenecks ✓ Use caching strategies ✓ Implement parallel processing ✓ Monitor continuously ✓ Optimize incrementally

✗ Optimize without measuring ✗ Optimize theoretical bottlenecks ✗ Over-optimize rare paths ✗ Ignore performance metrics ✗ Make large changes at once

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Content Modules

See detailed modules:

• Core Guidance - Performance principles
• Optimization Strategies - Caching, parallel processing

Optimize performance systematically through measurement, profiling, and incremental improvement.