Vincent Shrider

Shipped a cross-platform consumer app (React Native + Next.js + Node.js) with 180K+ downloads and a 4.8 rating. Implemented AI features using OpenAI and LangChain to automate content drafts and a support assistant, improving 30-day retention from ~22% to ~31%. Re-architected the Supabase/AWS backend (query tuning, Lambda cold-start fixes, S3 lifecycle policies), cutting median API latency from ~480ms to ~200ms and reducing monthly infra spend by ~35%. Added real-time presence and chat via WebSockets and Redis pub/sub, supporting 15K concurrent users with sub-200ms message delivery.

Migrated and maintained SaaS web apps on Next.js 13 App Router with TypeScript and Tailwind, boosting Lighthouse scores from the 60s to the low 90s. Built React Native companion apps sharing a Node.js + Supabase backend for a unified cross-platform session model. Integrated AWS Cognito authentication and Stripe billing for a 120K+ MAU SaaS, including subscriptions, prorations, and webhook reconciliation. Partnered with design/product on a v2 redesign, delivering 18 features across four quarters.

Built React + Node.js features and Python microservices for a B2B platform during rapid growth (MAU ~70K → ~210K). Reduced server costs by ~40% through Redis caching, improved hot-endpoint performance with pagination, and right-sized EC2 instances. Integrated AI APIs (OpenAI, AWS Comprehend) and wrote Python ETL scripts to replace manual analyst workflows. Established code-review checklist and onboarded two junior engineers.