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Harsh Kumar
Junior Full-Stack Engineer specializing in web apps, cloud services, and data migrations
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About
Built SparkyAI, a gamified college-essay writing assistant (hackathon project at ASU in 2025) using React/styled-components, Firebase (OAuth/DB), and OpenAI APIs, with concrete scalability and performance measures like rate limiting, indexed queries, code splitting, and conversation caching. Also designed a global low-latency voice-to-LLM architecture leveraging WebRTC, regional containerized services, global load balancing, streaming STT/TTS, and end-to-end encryption with minimal logging.
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Key Strengths
- Full-stack delivery using React + Firebase + OpenAI API
- Scalability planning with managed infrastructure and tier-based scaling (Firebase/OpenAI)
- Abuse prevention via rate limiting (10 responses/min) and malicious-input validation
- Performance optimization: reduced JS bundle size and implemented code splitting
- Database performance tuning with indexed queries in Firebase
- LLM context management via caching last 10 conversational messages
- Systems thinking for low-latency global voice+LLM architecture (WebRTC, regional containers, global load balancing, streaming STT/TTS)
- Cross-functional collaboration with non-engineers using weekly demos and frequent status updates
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