Eric Crook

San Francisco (Hybrid)

• Built low-latency voice booking agents for hospitality: reservations, live rates and restrictions, and card capture through secure vaults.
• Stood up deterministic and LLM-as-judge evals with multi-persona simulated customers; integrated multiple voice providers (Cartesia stood out).
• Got customers from onboarding to a live agent in under 5 minutes; built demos, live dashboards, and ops-ready multi-repo deployment standards.
• Shipped agentic tool use / browser automation, automated outreach and GTM mapping, and agentic sales agents.

Remote

• Architected an end-to-end LLM analytics stack (Python + Rust + Polars) ingesting >2 GB/day of events: feature extraction, dashboards, proactive insight alerts, and daily/hourly reports.
• Cut compute spend ~90% vs a prior Python-on-EC2 pipeline with serverless + Rust/Polars.
• Added RAG (LangChain + Chroma) so customers can query their own data in natural language via Slack.
• Deployed vLLM microservices on EKS with GPU and CPU autoscaling; built dSPy prompt optimization plus an eval harness that blocks deploys regressing accuracy, latency, or relevancy.
• Added S3 + Redis + Lambda caching and token budgeting to cut LLM cost; isolated customer data with PrivateLink, VPC endpoints, and KMS.

Remote

• Mined Stable Diffusion images and multi-LLM chat logs for search and health-and-safety policy enforcement.
• Built platform features in Go (comments, search, backend APIs) and trained/shipped image-categorization models on GPU providers.
• Tightened CI/CD to shrink build-to-deploy loops; optimized BigQuery dataflow and saved thousands of dollars per month.

Remote

• Built multi-chain Web3 logic for currencies and cross-game digital goods, including OpenSea ingress/egress.
• Owned mint, trade, destroy, and forge flows for NFTs on-chain and in-game, with an eye on security.

San Francisco

• Led engineering for a no-code interactive-fiction platform that turns stories into monetizing games.
• Built the analytics stack (PrestoDB, SageMaker, QuickSight, Looker, IBM Watson); ran AWS infra, scaling, cost, and GDPR.
• Shipped pricing automation; managed cross-zone teams; supported fundraising including the $14M Series A.

Oakland, CA

• Head of engineering and analytics at a publicly traded digital entertainment startup: Cordova mobile through Aurora/Redshift.
• AWS infra, cost, and on-demand scaling; random-forest models for categorization and prediction.
• Custom analytics on Redshift + Kinesis; Tableau / Periscope visualizations; integrations with Adjust, Urban Airship, Facebook, Google.
• GDPR compliance officer; managed engineers, analysts, and data scientists. Awarded 2 machine-learning patents.

San Francisco Bay Area

• Built the core analytics system processing 1B+ events/day; UA automation via automated experimentation.
• Platform services, AWS, and data teams across two offices supporting a dozen game studios; backend for DomiNations at 2M+ DAU.

San Francisco

• Tech lead for analytics, scalability, availability, and cloud infrastructure; game backends, leaderboards, login, and security. Acquired by Nexon.

San Mateo

• Backend on Millionaire City (2.5M DAU); lead backend on multiple games at 300K+ DAU; analytics / Tableau / data engineering.