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Dave Marr
Director-level Engineering Leader specializing in full-stack web platforms and AI integration
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About
Frontend engineer with deep experience building high-performance, data-heavy web applications, especially geospatial and climate/energy visualization products. Has led React/TypeScript architecture for large interactive UIs and designed Mapbox/MVT-based systems that dramatically reduced payload size and improved responsiveness in production.
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Key Strengths
- Led development of high-volume React/TypeScript frontend features
- Strong frontend performance optimization at production scale
- Designed scalable state architecture for large interactive datasets
- Applied virtualization to keep tens of thousands of UI elements performant
- Diagnoses bottlenecks with Chrome DevTools and data-driven profiling
- Reduced map payloads by replacing 30MB+ loads with vector-tile architecture
- Deep geospatial visualization expertise with Mapbox and MVT
- Built complex multi-layer map experiences with filters, popups, and custom controls
- Practical experience with production memory and OOM issues
- Collaborative problem-solving and performance-focused refactoring
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