Senior Backend Engineer at Surein

Surein.de is building an AI-native backend platform, transforming unstructured data into automated workflows. As a Senior Backend Engineer, you'll design, build, and scale backend services using Node.js, TypeScript, and PostgreSQL. This high-impact role offers ownership over complex systems and the opportunity to influence architecture and product direction.

• Build robust backend services using Node.js, TypeScript, and PostgreSQL, ensuring strong reliability and observability.
• Develop distributed, event-driven system components and AI-enabled backend capabilities, including LLM integration and evaluation workflows.
• Take ownership of significant backend modules, shipping complex features end-to-end, and shaping the technical foundation of the platform.

• Possesses strong backend engineering experience with Node.js/TypeScript and production-scale systems.
• Has a solid understanding of distributed architectures, AWS, Terraform, infrastructure automation, and observability tooling.
• Brings a builder mindset with a bias for action, low ego, pragmatic decision-making, and a curiosity for LLM-based integrations.

• Lead the development of an AI-native backend platform that transforms unstructured data into automated workflows.
• Join a Sequoia Arc alumni company, backed by top-tier investors, scaling core systems and AI integration layers.
• High-impact role with significant ownership over complex systems, influencing architecture, engineering excellence, and product direction.