• Lead the architectural design and incremental execution of LearnLux’s transition from single-tenancy to multi-tenancy in an enterprise SaaS environment. • Design and evolve cloud infrastructure for global scale, reliability, and data isolation, primarily on GCP (with AWS experience welcomed). • Apply a strong security and compliance mindset to system design and operational scale • Own and improve our infrastructure-as-code approach, using Pulumi (preferred) or Terraform to ensure environments are repeatable, visible, and scalable. • Connect backend services, infrastructure, and data platforms into a cohesive, well-documented system architecture. • Partner closely with engineers, product, and data to translate strategic architectural goals into a prioritized and executable roadmap. • Build and maintain backend services using Node.js and Python, contributing hands-on to critical systems. • Collaborate with data workflows and platforms, including BigQuery and Airflow, ensuring backend systems scale alongside a growing data platform and data lake. • Drive engineering efficiency through automation, including the use of AI-driven or agentic systems to improve developer workflows, operations, and internal tooling. • Mentor and support other engineers, enabling them to ramp quickly and contribute meaningfully. • Uphold global performance, reliability, and operational excellence, leading by example. • Foster clear communication and thoughtful decision-making across backend, frontend, data, and infrastructure domains.