I’m Emmanuel, 3x VP Product, now a founder at Level 250.

If you built or used APIs in the past 15 years, chances are you’ve used one of my products:

I’ve led some of the most influential API tools: Apiary (550,000+ APIs), Swagger (750,000+ APIs) and Oracle’s first Cloud-Native API Gateway. Before that, I built large B2B API programs at Verisk, Moody’s, and Precisely.

Today, I advise Fortune 500 CEOs and AI-forward startup founders on API Strategy, Developer Experience, MCP products, and AI agent readiness.

I'm also a member of OpenAPI and a featured speaker at apidays and other global technology conferences.

My passion is helping others build products, which is why I also teach on Maven: to share my lessons learned and help Product Managers and Engineers fast-track their careers.

Zdeněk Němec is a software architect, founder, and researcher focused on the evolution of software interfaces toward autonomous contracting and agent-native systems, with a current focus on Agentic B2B, payments, and commerce infrastructure.

He is Founder and CTO of Superface.ai, where he works on infrastructure enabling autonomous agents to discover, integrate, contract for, and execute capabilities across software systems.

Previously, he was Director of DSL Development at Apiary and creator of API Blueprint, one of the first widely adopted machine-readable API description languages. He later founded Good API, advising global companies on API architecture and platform design.