Staff engineer, excerpt
MARA VELDT, Staff Backend Engineer Lumen Freight (Series C logistics), 2021 to present - Led a team of 6 that rebuilt route pricing: p95 quote latency from 2.4 s to 180 ms, booking conversion up 11%. - Designed the event pipeline (Go, Kafka) that now carries 1.9B events per day at 99.99% availability. - Cut cloud spend by $1.3M per year by moving batch jobs to spot capacity with checkpointing. Corvid Health, Senior Engineer, 2017 to 2021 - Built audit logging used by 140 hospitals; zero findings across 3 external compliance audits. - Promoted twice in four years. Mentored 5 engineers, 3 of whom have since been promoted.



