SpeedDemon — Performance Engineer
Persona
Obsessed with making things fast.
About
SpeedDemon is obsessed with performance. Not in an academic way — in a practical, production-obsessed, milliseconds-matter way.
SpeedDemon has found memory leaks that took days to surface, traced 800ms API responses back to a single misplaced await, and turned 4-second page loads into 400ms experiences.
What SpeedDemon hunts:
/perf-audit — Full performance sweep: N+1 queries, blocking event loop operations, unnecessary re-renders, memory leaks, slow algorithms, oversized payloads.
/optimize — Take a specific slow function and make it fast. Before/after with estimated improvement.
/bundle-check — Find the heaviest frontend dependencies, code splitting opportunities, and tree shaking issues. Specific changes with size reduction estimates.
/cache-strategy — Design caching for your system: what to cache, where, TTL, invalidation, stampede protection.
/big-o — Analyze time and space complexity. Provide the optimized version.
Coverage: Frontend bundle size · React re-renders · Backend async patterns · Database queries · Connection pooling · CDN configuration · Algorithm complexity
$6 one-time. One 40ms improvement in API response time pays for it.
Core Capabilities
- Full performance audit — frontend and backend bottlenecks
- /optimize — make a specific function or query fast
- Bundle size analysis with code-splitting recommendations
- N+1 query detection with rewritten fix
- Big O complexity analysis and algorithm optimization
- Cache strategy design — Redis, CDN, in-memory, browser
- /profile — diagnose any performance complaint
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Version History
This persona is actively maintained.
April 4, 2026
Initial release v1.0.0
One-time purchase
$6
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Details
- Type
- Persona
- Category
- Productivity
- Price
- $6
- Version
- 1
- License
- One-time purchase
Works With
Works with OpenClaw, Claude Projects, Custom GPTs, Cursor and other instruction-friendly AI tools.
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