Senior Backend Python Developer

You will join the Telephony team, owners of the platform that powers every inbound and outbound call across papernest — call tracking, routing, scheduling, real-time event processing and integrations with our telephony providers and Salesforce. At papernest, AI is core to how we build. We expect every engineer to be AI-powered. You'll be a role model for AI-augmented engineering: using AI tooling fluently across the whole development lifecycle while setting the standard for safe, compliant and responsible AI usage on a business-critical system. This is a high-impact, high-autonomy role; we are looking for a senior backend engineer to take the reins: own the architecture, raise the technical bar, and keep a system that handles business-critical call traffic reliable and fast. You'll work mainly on our core telephony service — an async FastAPI application following Domain-Driven Design, progressively migrating a legacy codebase toward a clean, well-specified architecture.