Prompt Engineer (Healthcare)

About us Talkie builds AI Agents for healthcare. Our agents handle patient–clinic communication end-to-end — voice calls, web chat, and SMS — so patients get 24/7 access to care and busy practices never miss a conversation. Every month, our AI Agents handle close to a million real patient conversations across the US and Poland. Trusted by primary care, specialty practices, and hospitals. The Role We're looking for a Prompt Engineer to own the quality and intelligence of our AI Agents — from prompt design to production. This is a high-impact role at the intersection of language, technology, and healthcare. Your work will directly shape how hundreds of thousands of patients experience care. This is not a research role. You'll be writing, testing, and iterating prompts that run live with real patients — so rigour, empathy, and a zero-error mindset matter as much as technical skill. What You'll Do - Design, write, and continuously optimise prompts that power our AI Agents — making them natural, accurate, and reliable. - Analyse real patient–agent conversations end-to-end, identifying failure patterns, edge cases, and opportunities to improve agent behaviour. - Propose and implement technical solutions around function calling, tool use, context caching, and other LLM capabilities that make our agents smarter. - Build and run evaluation frameworks to test agent performance before and after changes — because every conversation is with a real patient and there is zero margin for error. - Create clear, structured documentation and customisation instructions so that agents can be tailored to each client’s specific workflows and needs. - Stay on top of the rapidly evolving LLM landscape — new models, techniques, and conventions — and bring the best ideas back to the team. - Work closely with the Product Manager (US market), engineering, and client teams to ensure agent quality across all deployments. What will you achieve with us? - Shape the experience that hundreds of thousands of patients have when they reach out to their doctor — across every channel — and make it better every single day. - Push the boundaries of what LLM-powered AI agents can do in a highly regulated, real-world, multi-channel environment. - Build evaluation and quality systems for conversational AI that don’t exist yet — you’ll be creating the playbook. - Have a direct, measurable impact on patient access to healthcare in both the US.