Unchained — architecture evaluation, governance, and domain boundaries
Collaborative Bitcoin custody, where reliability, data sensitivity, recoverability, and
operational accountability are central. Delivered an initial enterprise architecture charter,
a lightweight governance model, role mapping, data classification review, and domain-boundary
recommendations — enough structure for custody-grade risk without a heavyweight program.
Segmint — scalability, parallel processing, and real-time analytics
Banking and retail marketing analytics constrained by Greenplum throughput. Parallelized task
processing for a 40% throughput gain on the same hardware, then prototyped a real-time analytics
engine sustaining ~12k transactions per second at low cloud cost — opening a new business channel.
Veterans Health Administration — national authentication and authorization
Identity and access integration across a large, heterogeneous national healthcare environment.
Led design, prototype, and pilot work using SSO, SAML, XACML, RBAC, PKI, and Kerberos — because
application-by-application access could not scale across organizational boundaries.
VeDiscovery / Heureka — parallel unstructured-data processing
Legal discovery under court-driven time pressure. Designed a distributed processing architecture
with remotely deployable discovery agents and central review, achieving more than 10x throughput
on the same hardware.
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