Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We're redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace.
Aircall is headquartered in Paris, our European HQ, with a strong North American presence anchored in Seattle, our North American HQ, and teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. We've built a product customers love and a business that's scaling quickly, backed by world-class investors and driven by rapid AI innovation across multiple product lines.
At Aircall, you'll join a company in motion. How we work at Aircall We're customer-obsessed, data-driven, and focused on delivering meaningful outcomes. The Role We're looking for a strong Senior Python Engineer who's eager to go beyond traditional backend development.
You're energized by hard technical problems—distributed systems, AI orchestration, architectural trade-offs, performance,



and scalability. It's an opportunity to help build the intelligence layer behind a next-generation autonomous Sales OS.
Key Responsibilities Design and implement production-grade Python services with clean architecture and strong engineering discipline.
Integrate with external SaaS systems (CRMs, dialers, meeting tools, OAuth providers).
Optimize performance, latency, cost, and reliability of AI-driven systems.
Build and orchestrate LLM-powered agents (planning, reasoning, tool usage, memory).
Use AI coding assistants effectively and experiment with AI-augmented development workflows.
Qualifications 7+ years of strong backend engineering experience.
Advanced Python expertise (async, typing, architecture patterns, testing)
You design thoughtful, well-architected systems and write clean, high-quality code, with a focus on performance and long-term maintainability.
Experience with GCP (preferred) or

📌 Senior Backend Software Engineer (Madrid)
🏢 Jobijoba
📍 Madrid