• Feature Ownership: Lead the design and implementation of complex features within our Go-based ad-serving stack, optimized for high throughput. • Systems Optimization: Use pprof and tracer to eliminate bottlenecks; tune memory allocation and goroutine usage to meet aggressive p99 latency targets. • Protocol Mastery: Maintain high-speed support for OpenRTB and VAST protocols, focusing on efficient request parsing and validation. • Stream Processing: Integrate services with Kafka pipelines and with low-latency data stores to support real-time decisioning. • Platform Partnership: Work closely with Platform Engineers to ensure application behavior aligns with infrastructure capabilities, specifically around auto-scaling triggers, networking, and deep observability. • Defensive Engineering: Implement reliability patterns (circuit breakers, retries, graceful degradation) to maintain uptime during traffic surges. • Production Ownership: Take end-to-end responsibility for services, from initial design through deployment to Kubernetes (EKS) and production monitoring. • Architectural Rigor: Lead design reviews, providing critical feedback on system architecture, data modeling, and API design. • Mentorship: Grow the team through thoughtful code reviews and informal sessions on Go best practices and distributed systems.