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Bryant Kou
Senior Full-Stack Engineer specializing in AI platforms and scalable web systems
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Full-stack/product-minded engineer with recent experience in both an early-stage AI startup and a B2B payments marketplace. Stands out for building a pgvector-based semantic cache that reduced LLM latency by 35% and for shipping audit-heavy payment infrastructure with Stripe/Plaid, idempotent webhook handling, and major reconciliation query optimizations.
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Key Strengths
- Startup engineer comfortable in high-ambiguity, no-PM/no-DevOps environments
- Built semantic caching layer with pgvector that cut latency 35% and reduced LLM costs
- Pragmatic experimentation and manual validation for ML/embedding threshold tuning
- Strong full-stack ownership across React, FastAPI, NestJS, PostgreSQL, and AWS ECS
- Payments and fintech integration expertise with Stripe Connect and Plaid
- Designed idempotent webhook processing to handle out-of-order events and reduce failures
- Auditability-focused systems design for finance and ops workflows
- Database performance tuning with measurable impact, including reducing a nightly query from 2s to 50ms
- Production-minded engineering with CI/CD, Docker, monitoring, and error logging
- Delivered business impact by reducing manual finance work and payment errors
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