Mustafa Ayyub

Led DocuTalk-AI: RAG-based assistant using LangChain, MiniLM, Pinecone, OpenAI. Built Streamlit + Python full-stack system for 500+ users. Integrated Stripe (tiered billing) and Firebase Auth. Achieved 85%+ query accuracy on 1K+ interactions. Sub-200ms responses via semantic search & caching. Managed 2-person Agile team with sprints & reviews. Built fault-tolerant pipelines with logging & retries.

Engineered APIs & automation systems, reducing processing time by 30% Built cron jobs in Next.js handling 10K+ records/day with zero downtime Integrated HubSpot with 100% schema compliance & real-time sync Reduced API latency via caching, Redis, and optimized calls Handled 500K+ monthly API requests with 99.9% uptime Created Grafana dashboards & CI/CD with GitHub Actions Tech: Next.js, Node.js, Redis, PostgreSQL, Docker, HubSpot, Zenoti

Developed 15+ RESTful APIs in Ruby on Rails for fintech/comms platforms with 99.8% uptime Optimized PostgreSQL queries (800ms → 200ms) and designed scalable DB schemas Integrated Stripe & Twilio; documented APIs with Swagger (50% faster client onboarding) Achieved 95% test coverage using RSpec & Jest Participated in Agile ceremonies; contributed to scalable system architecture Tech: Ruby on Rails, PostgreSQL, Stripe, Twilio, Swagger, RSpec, Git