Full-Stack / Backend Engineer

🚨 We're hiring a Full-Stack / Backend Engineer @ Sandra AI (Full-time – Paris, Station F) At Sandra AI, we're reinventing how car dealerships handle phone calls. 📞 Every month, dealerships lose business because 30% of calls go unanswered and most leads don't get followed up. We're building voice-first AI agents that pick up every call, qualify leads instantly, and book appointments on the spot — 24/7. After joining Y Combinator, launching with dozens of dealerships in France and the US, and raising our first round, we're now looking for a backend engineer to help us scale 🚀 You'll work closely with the co-founders (ex-McKinsey, Bain, QuantumBlack) to ship fast, own core architecture decisions, and have a direct impact on a live product used by thousands of drivers. 💼 What we're looking for: • Strong experience in backend development (Python / FastAPI preferred) • Comfortable with cloud infrastructure & deployment (AWS / Docker) • Solid engineering mindset: autonomy, reliability, and a taste for fast shipping • ➕ Bonus: frontend experience • ➕➕ Bonus²: passion for voice, AI, or the automotive space 🛠️ Our stack: • Python (FastAPI), PostgreSQL, AWS • Real-time voice + AI infrastructure 📍 Details: • Full-time position based in Paris – Station F • Start: ASAP • Language: English and French fluency required • Salary highly competitive 🔥 Why join now? • Join us right after YC, with real traction and real users • Have ownership over key tech decisions and roadmap • Work on real-time AI in production, not just PoCs • Help shape the future of voice AI in a massive, underserved industry

Sandra AI builds AI employees for car dealerships and auto repair shops, starting with AI receptionists. Dealerships miss 30% of customer calls, leading to 45% of customers switching dealerships and up to $2M in annual lost revenue per dealership. Sandra AI operates 24/7, handling calls, emails, and texts, and directly schedules appointments, ensuring no opportunity is lost. As the first voice AI fully integrated with key dealership systems, Sandra AI is uniquely positioned to capture a significant market. The founding team is composed of ex-McKinsey who graduated from Ecole Polytechnique, MIT, and HEC Paris.