Senior Back-end Developer

As a Senior Back-end developer, you'll be a vital part of our team, working together to build Donna, our perfect AI-sales assistant for field sales reps. Donna empowers them to focus on what they do best - selling. Expect to tackle diverse challenges in back-end engineering while helping shape the infrastructure behind our AI systems. You’ll work on integrating Large Language Models (LLMs) and scaling the real-time systems that power Donna’s voice and conversational capabilities. If you're ready to embark on an exciting journey from the early days and make a significant impact in a growing team with global ambitions, Donna is the place for you! What you’ll be doing A non-exhaustive list of features we could use your help with: - Design and implement the overall architecture of our web applications and integrations, ensuring they are responsive and maintain high-quality code standards. - Adding support for new data source ingestion and assisting in maintaining clarity in our data layer. - Scale and optimize our voice-to-voice pipeline and AI infrastructure to support real-time, low-latency interactions across multiple communication channels. - Help design and scale the infrastructure that powers Donna’s AI systems (LLMs, voice pipelines, and data processing), ensuring reliability, observability, and performance in production. - Contribute to team growth by mentoring junior developers and AI engineers, helping them design scalable systems and production-ready architectures. - Experiment with new technologies to get the most out of our stack. - We believe in shipping fast to gather feedback quickly from our customers. - We like to keep things simple, so we leverage as much as possible the services offered by key vendors. - You’ll report directly to our CTO, but you’ll work together with other departments (and customers) in detailing the requirements of features and make trade-offs together in order to maximise value while minimising complexity.