Michael Loewenstein
Software Engineering Manager Hands on @Delivery Hero SE
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WORK HISTORY
Software Engineering Manager Hands on @Delivery Hero SE
Berlin, DE
Leading a cross-functional team of 10 engineers (backend, data science, ML engineering) building the search platform that powers food discovery for 10M daily users across 50+ countries. KEY ACHIEVEMENTS: Product & ML Innovation: • Delivered multiple search improvements contributing 20M+ EUR incremental annual GMV through enhanced discovery and personalization features • Implemented Semantic Search with hybrid lexical/vector approach, achieving 98% reduction in zero-results rate, 70% GMV increase for long-tail queries, and 48% CVR improvement • Shipped Exact Match optimization improving click position by 2.4% and search CTR by 1.9% across multiple markets • Integrated AdTech ranking system increasing CPC clicks by 10% while maintaining search quality Infrastructure & Operational Excellence: • Led infrastructure modernization: Grafana migration, Drone CI adoption, and generic load testing framework scaled across all brands TECHNICAL ENVIRONMENT: GCP, AWS, Elasticsearch (vector + lexical search), Java, Python, Kubernetes, Kafka, BigQuery, Grafana, Drone CI LEADERSHIP: Cross-functional stakeholder management, agile delivery, hiring & mentoring, process optimization, incident management
EDUCATION
University of Haifa
B.Sc, Computer Science and Biology
SKILLS
ABOUT MICHAEL LOEWENSTEIN
A technology leader with 13+ years building production systems serving millions of users across healthcare AI, food-tech, and data platforms. Currently leading a 10-person cross-functional team at Delivery Hero, owning search infrastructure serving 10 million daily users across 50+ countries. MY IMPACT: • Scaled search systems handling millions of daily requests using ML/LLM technologies, directly increasing annual GMV through personalized experiences • Founding engineer at 2 startups: Viz.ai (healthcare AI, 1st engineer → Series B) and Rhino Health (federated ML computing, founding team) • Built production-grade AI systems for acute care patients navigating FDA compliance (HIPAA, SOC2, ISO27001) • Patent holder for distributed computing systems (US Patent 20•••••••17) • Led teams from 0 to 10+ engineers across backend, data science, ML, and infrastructure WHAT I DO BEST: I thrive at the intersection of technical depth and organizational leadership. Whether architecting multi-cloud systems, implementing ML/AI pipelines, or building high-performing teams, I move end-to-end—from napkin design to production deployment at scale.TECHNICAL EXPERTISE:Cloud & Infrastructure: AWS, GCP, Kubernetes, Docker, TerraformData & ML: Elasticsearch, PostgreSQL, Redshift, Kafka, LLMs, Deep Learning OpsLanguages & Frameworks: Python, Java, Node.js, C#, C++Leadership: Hiring & mentoring engineers, agile delivery in regulated environments, cross-functional collaboration 🧗 When not architecting systems: Rock climbing & bouldering enthusiast
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