Messaging systems · Background execution · Developer experience
I'm a Senior Software Engineer at GitHub, working on a platform that supports roughly 8B background jobs and 150B events each day. I write field notes, source-level studies, and experiments with the evidence—and the limits—made explicit.
José David Baena
Messaging infrastructure · Distributed systems
Assess how I think through a protocol bug, a structured course, a codebase study, and an interactive simulator.
Protocol debugging
15 min article
Trace silent data loss from client behavior to one missing 8-byte protocol write.
Open resourceGuided course
13 parts · complete
Work through protocol internals, platform ownership, and migration boundaries in a deliberate order.
Open resourceSource-guided study
8 parts · complete
See how a Kafka-compatible system changes durability, storage, and operations under the hood.
Open resourceInteractive project
Author / Maintainer
Explore queues, retries, and failure modes without standing up a worker fleet.
Open resourceOne production-systems anchor plus recent entries from distinct research projects.
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