At Callahan & Associates, Inc., I helped build market intelligence and performance benchmarking platform that combine modern AI with scalable backend systems. I designed and optimized core services, developed high-throughput ETL pipelines to process large financial datasets, and improved data workflows for reliability and performance. Alongside backend ownership, I supported UI integrations by partnering with frontend teams to deliver user-facing features powered by AI-driven insights. I also integrated machine learning capabilities into the platform to strengthen decision support and create more intelligent, personalized experiences. This work sharpened my ability to ship backend-heavy, AI-enabled products end to end in data-intensive environments.