Hey! I'm Mark, a Distinguished Engineer at Rocket. For nearly two decades, I've built APIs, SDKs, and Web platforms for flagship consumer products at PayPal, eBay, and Rocket.
I build developer platforms that make complex systems composable. Most of what I build in the open lives on GitHub.
Now at
Rocketpreviously
eBay
PayPal
State Farm
Distinguished Engineer at Rocket
Architected Rocket’s federated GraphQL platform, which powers every key Web, Mobile, and AI assistant experience, and enabled the integration of Mr. Cooper into Rocket.
Distinguished Engineer at eBay
Led technical strategy for eBay Live, a live auction video streaming platform, and scaled CI/CD across eBay’s applications and platforms.
Sr. Principal Engineer at PayPal
Led Checkout Web, PayPal SDKs, and Web Platform; drove GraphQL adoption company-wide and led a large engineering organization.
Making coding agents dependableArticleAI-enabled engineering
The new era of static analysis: AI-authored, deterministically enforcedRocket Technology BlogAI-enabled engineering
Scaling GraphQL at PayPalPayPal Technology Blog · 34K viewsAPIs & GraphQLGraphQL: Instrumenting your API and unlocking superpowersPayPal Technology Blog · 11.6K viewsAPIs & GraphQLGraphQL Resolvers: Best PracticesPayPal Technology Blog · 269K viewsAPIs & GraphQLDevTools for coding agents: session composition, cost attribution, compaction forensics, and config A/B benchmarking across Claude Code, Codex, and pi.
Lossless-by-default context compression for LLM coding agents: proxy, library, CLI, and MCP server. Local-first, cache-correct, reversible.
Audit MCP server usage from Claude Code transcripts. Find idle servers to prune.
Customizable status line for AI coding assistants: real-time display of model, tokens, cost, git status, and more.
Turn any GraphQL API into AI-agent-ready tools: MCP servers, LangChain tools, and standalone SDKs.
Find me on Email, GitHub, LinkedIn, or X.
Elsewhere: Medium, GitHub, npm, and Speaker Deck.
Prefer a terminal? Launch the CLI.
