At Bolna, we’re building tools that change the way teams leverage Voice AI . We’re looking for a Lead Backend Engieer to architect and scale the core systems powering our real-time voice AI platform. This is an early, high-impact role where you’ll shape the foundation of our product and directly influence its reliability, scalability, and performance. We’re a YC F25 startup growing at rocket speed with a lean team of <10 builders. Looking For Founding Backend or Infrastructure engineers that have build scaleable systems. Candidates who have led or contributed to the 0 → 1 or 1 → 10 journey and thrived in startup environments, such as ex-founders or founding engineers. Have previously been in a fast growing & scaling team. Great at communications and fun to work with. Responsibilities Architect and scale our core Voice AI platform leveraging FastAPI, WebSockets, and Kubernetes. Develop high-performance, event-driven architectures to power our core orchestration platform. Oversee infrastructure scalability and observability, ensuring reliability, resilience, and smooth system operations. Maintain and evolve the API platform that powers conversations, ensuring reliability, low latency, and seamless integrations with client applications. Required Skills 5+ years of backend engineering experience with Python. Strong expertise in FastAPI, WebSockets, and event-driven architectures, with deep knowledge of asyncio and concurrency. Hands-on experience with Kubernetes, Docker, and cloud-based deployments. Solid understanding of PostgreSQL, Redis, and scalable data storage solutions. Proven track record in performance tuning and optimization for high-throughput, real-time systems. BONUS: Demonstrated contributions to a Python project or open-source library.
As a Lead Backend Engineer at Bolna, you will play a crucial role in architecting and scaling the core systems of our real-time voice AI platform. This position offers you the opportunity to shape the foundation of our product and have a direct impact on its reliability, scalability, and performance. Bolna is a YC F25 startup that is rapidly growing with a small team of less than 10 individuals. **Responsibilities:** - Architect and scale our core Voice AI platform using FastAPI, WebSockets, and Kubernetes. - Develop high-performance, event-driven architectures for our core orchestration platform. - Supervise infrastructure scalability and observability to ensure system reliability, resilience, and smooth operations. - Manage and enhance the API platform that facilitates conversations, guaranteeing reliability, low latency, and seamless integrations with client applications. **Qualifications Required:** - 5+ years of backend engineering experience with a focus on Python. - Proficiency in FastAPI, WebSockets, and event-driven architectures, including expertise in asyncio and concurrency. - Hands-on experience with Kubernetes, Docker, and cloud-based deployments. - Strong understanding of PostgreSQL, Redis, and scalable data storage solutions. - Proven track record in performance tuning and optimization for high-throughput, real-time systems. - Bonus: Demonstrated contributions to a Python project or open-source library. If you are a founding backend or infrastructure engineer with experience in building scalable systems and thrive in startup environments, then you could be the perfect fit for this role. Bolna is seeking individuals who have led or contributed to the journey from 0 to 1 or 1 to 10 and have experience in fast-growing and scaling teams. Additionally, excellent communication skills and a collaborative mindset are essential qualities we are looking for in potential candidates. Join us at Bolna and be part of a dynamic team that is revolutionizing the way teams leverage Voice AI.,