Arlen Chereshnikov

Led frontend architecture decisions for public-facing municipal platforms. Collaborated with backend engineers, urban planners, and medical staff in mostly-asynchronous environment. Full ownership of projects from requirements gathering through implementation to production monitoring.

• Seismic Resilience Analytics Platform — Architected frontend for citywide earthquake risk dashboard. Designed client-side optimization strategy handling 500MB+ GeoJSON payloads—reduced load time from 35s to 10s through request batching, IndexedDB caching, and progressive tile loading. Built state management architecture (Zustand + React Query) supporting 500K+ map objects without performance degradation. Documented technical bottlenecks and proposed tile server migration roadmap to stakeholders.
• Bundle Size Optimization Initiative — Led systematic refactoring of critical routes: reduced /recommendations from 261KB → 10.8KB (-96%), First Load JS from 820KB → 150KB (-82%). Improved Lighthouse performance score from 45 to 92. Integrated Lighthouse CI into deployment pipeline to track performance regressions and prevent future issues.
• Hospital Capacity Monitoring System — Built WebSocket-based real-time dashboard tracking 40+ hospitals. Architected state updates maintaining <16ms render cycles under concurrent data streams. Implemented end-to-end testing suite ensuring sub-second notification latency. Collaborated with backend team to optimize WebSocket message format.
• Digital School Ratings Platform — Created analytics portal for filtering/comparing 300+ schools. Architected virtualization solution (react-window) for 50K+ records dataset, reducing memory footprint from 800MB to 480MB. Designed accessible keyboard navigation and screen reader support (WCAG 2.1 AA compliant).
• Design System & Component Library — Built reusable component library using shadcn/ui (Radix UI primitives) and Tailwind CSS, shared across 4 municipal modules. Translated design specifications into production-ready components maintaining visual consistency. Reduced feature development time by 30% through standardized accessible components and comprehensive documentation. Established CI/CD pipeline (GitHub Actions, Vercel) achieving 99.8% production uptime.
• Cross-functional Collaboration — Partnered with backend team to optimize API contracts, reducing average payload size by 50% through data normalization. Worked directly with domain experts (urban planners, medical administrators) to translate requirements into intuitive UX patterns. Documented all architectural decisions for async team alignment.

Cross-platform productivity application with local-first SQLite architecture. Full ownership from architecture design through implementation to release management.

• Built production desktop app from scratch using Tauri (Rust + React) with multi-language support (English/Russian)—full ownership from architecture decisions to user support
• Designed local-first architecture with SQLite for offline-capable data persistence
• Optimized cold start to <500ms through lazy loading and strategic code splitting
• Managed complete release workflow: versioning, automated changelog generation, GitHub Releases—delivered 4 stable production versions
• Open-sourced under MIT license with comprehensive documentation for contributors