Senior Staff Back-end Engineer (eCommerce Engineering)

Key Responsibilities Drive Technology Vision & Roadmap: Define and champion a 12–18 month platform strategy, author and approve RFCs, and align cross-functional teams toward shared objectives. Architectural Authority: Provide thought leadership in designing privacy compliant architectures for multi-region, multi-tenant environments. Establish and enforce API governance standards and controlling access, monitoring with detection and response. Lead Complex System Design: Oversee architecture that ensures backward compatibility, orchestrates phased migrations, and maintains data integrity—including eventual consistency—while optimizing caching strategies. Operational Excellence & Reliability: Set and uphold SLOs and error budgets. Lead capacity planning, performance optimization, and incident management, including root-cause analysis and postmortem reviews. Security, Compliance & Cost Optimization: Ensure privacy and regulatory compliance while driving cost-efficient technical decisions and operational standards. Hands-on Contribution: Perform high-impact code reviews and performance optimizations. Cross-Functional Influence: Partner with PMs, TPMs, and teams across Search, Data, Checkout, and more to deliver reusable platform components and standards. Mentorship & Bar Raising: Coach Senior and Staff level engineers, lead design reviews, and elevate engineering culture and quality standards. Basic Qualifications 10+ years of professional backend development experience (excluding internships) 7+ years of experience in Java/Kotlin/Spring-based service development and 3+ years in architecture leadership Proven experience designing and operating web-scale microservices; hands-on experience with AWS and Kubernetes Deep expertise in diagnosing mission-critical system failures, identifying root causes, and institutionalizing preventive measures Strong communication and leadership skills to align stakeholders and drive complex technical decisions across organizations Preferred Qualifications Proven experience designing and operating AuthN and AuthZ infrastructure and services – access control, monitoring, detection, and response. Experience designing and operating large-scale distributed systems handling global multi-region traffic Hands-on experience with data pipelines and event processing using Kafka, Spark, Cassandra, and Airflow Proven track record in building observability frameworks with tools such as OpenTelemetry, Prometheus, and Grafana Expertise in JVM performance tuning, large-scale cache/storage design, API schema versioning, and testing Experience designing platforms, frameworks, or SDKs that are widely adopted across multiple product teams