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George Koranteng
Junior Full-Stack Software Engineer specializing in web platforms and data systems
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About
Full-stack engineer and KICKOFFUSA cofounder who built production payment/registration and live tournament experiences under real matchday load (200+ concurrent users), including Stripe webhooks with idempotency and UX improvements that cut checkout abandonment ~15%. Also owned an end-to-end research hub at a GTSCL internship—designed a normalized Postgres schema and full-text search (tsvector/GIN) delivering sub-100ms queries for 300+ researchers.
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Key Strengths
- Shipped end-to-end Stripe checkout + webhook payment confirmation with robust idempotency (event ID stored in Postgres)
- Reduced checkout abandonment ~15% through UX iteration (error boundaries, clearer retry/fallback states)
- Performance-first mindset: diagnosed bottlenecks and achieved major wins via Redis caching before React micro-optimizations
- Designed and optimized Postgres full-text search (tsvector + GIN) to support sub-100ms queries; validated with EXPLAIN/ANALYZE
- Pragmatic production quality: targeted tests for high-risk paths, structured logging for incident reconstruction
- Made effective architecture tradeoffs under load (materialized view for standings vs real-time computation)
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