Gregory Oliver

Partnered with client stakeholders to scope and ship 5 data-intensive single-page applications (SPAs), maintaining a 100% on-time delivery record. Led the Shipping CURA project utilizing Django and React, adding real-time shipment tracking and rate-shopping features that increased user engagement by 25% in 90 days. Improved API performance by introducing PostgreSQL partitioning, caching, and proactive alerting, reducing P95 latency by 40% and sustaining 99.9% uptime. Built a Selenium-based continuous integration pipeline that lowered defect rates by 30% and evangelized Scrum ceremonies increasing squad throughput by 20% over two quarters.

Architected a core talent-matching engine achieving 90% placement accuracy and tripling monthly recurring revenue. Re-engineered microservices to improve concurrency, achieving 150% throughput and 50% latency reduction. Planned and executed AWS-to-LocalStack migration for development and testing environments, reducing costs by $120k per year and slashing setup time from hours to minutes. Refactored React bundles using code-splitting and lazy loading, improving page loads by 20% and engagement by 28%. Led A/B testing framework and real-time dashboards to support data-driven decisions.

Developed HIPAA-compliant APIs for a radiology workflow platform used by over 200 hospitals, processing more than 3 million records daily. Implemented FHIR-based interoperability services, reducing integration time with EMR vendors by 60%. Increased automated test coverage to 85% using RSpec and Selenium, shrinking regression testing cycles from 4 days to less than 1 day. Served as on-call responder maintaining mean-time-to-recovery under 20 minutes for priority 1 incidents.