Jeffrey Plewak

Full Stack Python Developer @Mstro, Inc

Washington, DC, US

Led design and delivery of compliance-first AI platforms combining multi-agent LLM systems, provenance/lineage, and blockchain governance.Built AI pipelines with LangChain, LangGraph, Ray, and VLLM; deployed Perplexity-style RAG using Pinecone vector search and experimenting with xLangChain, DSPy, HaystackEmbedded explainability (XAI), provenance, and lineage into all pipelines for auditability in gated settings.Applied OPA and NIST frameworks; ensured HIPAA, FDA, SOC2, and GDPR alignment with human-in-the-loop DAO approvals and policy gates.Designed GitHub like knowledge marketplace for forking context, approvals, and royalty-sharing via smart contracts.Engineered smart contracts: ERC-20 (utility/reward), ERC-721 (unique certs), ERC-1155 (editions/access), ERC-2981 (royalties).Implemented upgradeability and modularity: ERC-1967 (Transparent/UUPS) and ERC-2535 (Diamond); enforced storage-layout safety and selector governance.Integrated EIP-712 typed approvals and EIP-1271 contract signatures; explored ERC-4337 account abstraction and ERC-725 DID for identity.Deployed multi-cloud infrastructure (Kubernetes, Terraform, Docker) and event systems (Pulsar, Kafka, Spark); added observability and resilience with ELK/OTEL. Loki.

University at Buffalo

Bachelor of Science - BS, Computer Science