This is a role that TechTree is recruiting for on behalf of one of our clients. TechTree is an AI-driven recruitment platform working with high-growth companies. When you apply, our AI Agent matches you not just to this role , but to other relevant opportunities across our network, so one application can unlock multiple roles. Senior AI Engineer, Agents — clinical AI agents in production, pushed to state of the art. Fully remote (LatAm). Our client is a healthtech company on a mission to transform healthcare in Latin America and beyond. Their platform introduces AI Healthcare Employees that work invisibly inside clinical workflows — transcribing consultations in real time, generating structured medical records, and offering evidence-based decision support, without disrupting the physician's flow. You'll take clinical AI agents that already run in production and push them further: ontologies that make decision support deterministic, small models trained to specialize the stack, routers that match task difficulty to compute, and evaluation that finds what standard frameworks miss. What You'll Do → Design clinical ontologies so decision support is deterministic and auditable → Fine-tune and distill small LLMs to specialize and accelerate the agent stack → Build router models and task decomposition — cheap and fast for the easy 80%, correct for the hard 20% → Push evaluation past the standard playbook: adversarial evals, calibrated LLM-as-judge, failure taxonomies What We're Looking For → Senior, hands-on depth: models trained end to end, evaluation systems designed from scratch, agents shipped and kept running → Fluent in context engineering — RAG, vector stores, knowledge graphs → Strong Python and clear judgment on context vs. training → AI-native, fluent in English What is TechTree? TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience. Our AI Agent gets to know your background, experience, and what you're optimising for. It continuously matches you to live roles across our network where there's genuine alignment, not just keyword overlap. Our Human Team is there to support you through the process — answering questions, adding context, and making sure you're never left guessing or ghosted. We only post real jobs. Every role on TechTree is a live, active hire.