Skip to content
View fbac's full-sized avatar

Block or report fbac

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
fbac/README.md

Francisco de Borja Aranda Castillejo

Staff Engineer. 15+ years building systems that run in production.

I take ambiguous problems, figure out the architecture, write the code, ship it, and iterate until it works at scale. My home is the bottom of the stack - Linux kernel, eBPF, networking internals, and I build up from there through distributed backends, high-throughput services, and the infrastructure that runs them.

What I build

  • Low-level systems — eBPF networking tools, custom L4 proxies (sk_lookup), SR-IOV/DPDK data paths, kernel-level debugging and performance work
  • Networking — SDN, netfilter, Open vSwitch, TLS, socket-level connection steering
  • Distributed systems & backends — services that scale, consensus-critical backend services, decentralized messaging networks, cross-chain indexers
  • Infrastructure — Kubernetes/OpenShift, Terraform, AWS, Cloudflare edge, CI/CD pipelines that don't break at 3am

Stack

Go · Rust · C — Linux kernel, eBPF, Kubernetes, Terraform, AWS, PostgreSQL · also Solidity/Foundry

Career

  • Staff Engineer — XMTP Labs · decentralized backend, AWS/Kubernetes/Terraform infrastructure, a globally distributed Cloudflare edge platform, protocol architecture
  • Protocol Engineer — ZetaChain · Cosmos SDK L1 distributed-systems and protocol engineering
  • Senior Engineer — Chainlink Labs · core infrastructure and toolchains for a high-availability oracle network, cross-chain tooling
  • Principal Engineer — Red Hat · upstream Kubernetes/OpenShift core, eBPF networking, Linux kernel internals, cluster scale & performance work

Links

🌐 fbac.dev · ✍️ blog · 💼 linkedin · 📧 me@fbac.dev

@fbac's activity is private