Summary
Sönmez Kartal is a Fractional CTO and Systems Architect with 13 years of experience designing distributed systems, scalable cloud infrastructure, and developer-facing frameworks. He builds gossip-based peer-to-peer networks and transport-agnostic data streams, pairing deep practical knowledge of WebCrypto, Node.js streams, and scuttlebutt-style replication with a functional programming background in the Lisp family. His work spans hands-on engineering—implementing TCP, WebRTC and WebSocket transports, Cloudflare Workers services, and CI/CD pipelines—to technical leadership roles that resolve architectural debt and scale SaaS products. Comfortable from low-level protocol design to product-facing features (OAuth/OpenID, custom domains, email relay), he routinely migrates complex systems without disrupting users. Based in Istanbul, he combines systems administration and SRE experience with a philosophical sensibility that favors well-reasoned, auditable architectures and developer ergonomics.
13 years of coding experience
13 years of employment as a software developer
Philosophy, Philosophy at Istanbul University
English