Take responsibility for the growth the .jOS SaaS platform., Usage of modern back-end technologies and related system architectures (e.g., micro-services, reactive programming, serverless), Working with cloud infrastructure for distributed systems to provide scalable solutions for millions of records and users, Integration of third-party APIs and provisioning of outbound APIs for frontends and other consumers (e.g., crawlers) while optimizing for robustness and latency, Work with DevOps processes focussing on a high degree of automation and quality (e.g., trunk-based development, infrastructure as code, multi-level test automation), Willingness to use, learn, and adapt our current tech stack, including node.js, TypeScript, MongoDB, Apache Kafka, Redis, AWS incl. ECS, Lambda, and CloudWatch