Who are Heidi?Heidi is on a mission to halve the time it takes to deliver world-class care.We believe that by 2050, every clinician will practice with AI systems that free them from administrative burdens and increase the quality and accessibility of care to patients across the world.Built for clinicians, by clinicians, at the core of Heidi is its people. We are an eclectic bunch of inventors, builders, scientists, nurses, doctors, mathematicians, designers, creatives, and high-agency executors.We achieve in 6 months what it takes our competitors 4 years to do. In just 12 months, 20 million patient consults were supported by Heidi, and we're now powering more than 1 million consults every week.With our most recent $16.6MM round of funding from leading VC firms, we're geared up to supercharge our ambitious global growth, starting with the US, Canada, UK and Europe - and we need great people like you to get there. Ready for the challenge?The RoleWe're looking for a qualified doctor or clinician with AI/ML expertise to join our Medical Knowledge (MK) team as a Medical AI Specialist. You'll bring your clinical expertise as well as technical expertise in software, AI, and machine learning into a fast-paced, hyper-growth startup environment. In this role you'll:Help shape our AI products by infusing medical insights with deep technical knowledgeCollaborate across teams to turn clinician needs into reliable, high-impact AI featuresWhat you'll do:Own the clinical integrity of Heidi: advise clinicians, troubleshoot edge cases, and validate outputsPartner with product, engineering and design teams to engineer prompts, build agentic AI, create model evaluation frameworks, and fine-tune models.Build cutting-edge AI features within Heidi using the latest tools and frameworksPlan and collaborate on research studies that prove our AI scribe's clinical accuracy and user impactAdvise leadership on clinical quality and product roadmap prioritiesMentor colleagues and help build a culture of clinical excellence and collaborationWhat we will look for:Clinician with AI product experiencePrevious hands-on experience building scalable AI products or features for healthcare settingsLLM & foundation-model expertiseDeep experience with large language models and provider APIs (OpenAI, Claude, Gemini), building LLM-powered healthcare products and featuresPrompt engineering & safetyProven track record crafting, iterating, and testing prompts; mitigating bias and hallucinations; embedding clinical safety guardrailsCross-functional collaborationTranslate clinical needs into technical specs, partner closely with engineering and product teams, and embed quality controls for clinician trustPerformance optimizationOptimise AI features for accuracy, latency, scalability, and cost ("fast, safe, cheap")RAG pipelines & evaluationBuild and maintain retrieval-augmented generation pipelines and automated evaluation workflows (traditional ML metrics, LLM-as-judge, A/B tests, clinician feedback loops)AI agent design & fine-tuningDesign, build, and orchestrate multi-step AI agents; fine-tune or adapt models on medical datasetsSemantic search & vector DBsHands-on experience with embeddings, vector databases, and agent frameworks like LangChainSoftware engineering & ML fundamentalsFundamental understanding of Python, JavaScript, SQL; experience with cloud platforms and ML frameworksWhat do we believe in?We create unconventional solutions to difficult problems and we build them fast. We want you to set impossible goals and make them happen, think landing a rocket but the medical version.You'll be surrounded by a world-class team of engineers, medicos and designers to do your best work, inspired by our shared beliefs:We will stop at nothing to improve patient care across the world.We design user experiences for joy and ship them fast.We make decisions in a flat hierarchy that prioritizes the truth over rank.We provide the resources for people to succeed and give them the freedom to do it.Why you will flourish with us ?Flexible hybrid working environment, with 3 days in the office.Additional paid day off for your birthday and wellness daysSpecial corporate rates at Anytime Fitness in Melbourne, Sydney tbc.A generous personal development budget of $500 per annumLearn from some of the best engineers and creatives, joining a diverse teamBecome an owner, with shares (equity) in the company, if Heidi wins, we all winThe rare chance to create a global impact as you immerse yourself in one of Australia's leading healthtech startupsIf you have an impact quickly, the opportunity to fast track your startup career!Help us reimagine primary care and change the face of healthcare in Australia and then around the world.