Madars Virza

Oversaw conversion of cryptographic specifications into shipping client code and test suites that enforced Zcash privacy properties. Managed development tasks that implemented proving and verification pipelines, integrated shielded transaction formats, and handled consensus-level changes required by upgrades. Played a central role in upgrade design and rollout, participating in Sapling implementation work that reduced proof sizes, improved wallet performance, and modified on-disk and on-wire formats. Coordinated engineering efforts to ensure backward compatibility and migration paths for Sprout-era data. Participated in and helped operationalize parameter generation ceremonies and contributed code and processes used during multi-party setup events. Delivered reference implementations, benchmarks, and deployment scripts that were adopted by node operators and wallet teams. The body of engineering and research work translated theoretical protocol constructs into production artifacts; these concrete code contributions and operational roles had direct effects on ZEC's technical capabilities, upgrade cadence, and the measurable privacy/performance characteristics of shielded transactions in the live network.