Elliott Alexander

I’m a senior software engineer with 7+ years shipping and owning production full-stack systems, and I now specialize in applied AI beyond prototypes—authoring Agent Skills, building context-engineering systems, and implementing guardrails and evaluation tooling so AI agents work reliably in complex, high-stakes domains.

At the Ethereum Foundation, I built and shipped AI-assisted developer tooling, co-creating ethskills.com—an open-source library of ~20 Agent Skills that gives coding agents the context and guardrails needed to generate accurate applications in messy real-world conditions. I also set and enforced an organization-wide quality bar for Agent Skills and helped convert one-off Skill collections into consistent, repeatable patterns.

I’ve repeatedly turned ambiguous workflows into production self-serve products. With BuidlGuidl, I designed and built HackedWalletRecovery.com, taking an expert-only wallet-recovery process to production self-serve flow so rescues could proceed privately—now behind hundreds of successful recoveries—while also leading the Ethereum Tech Tree and creating an Impact Calculator prototype to support more data-driven decisions.

Earlier, at BitPay and Devnext, I owned production reliability and developer enablement—building payment infrastructure reliability tooling, adding protocol-level support, reducing storage costs, and creating self-serve data tooling for non-technical teams. I also value clear communication: I’ve established authoritative public documentation and taught 8 hands-on developer workshops worldwide.