Mid Level AI Models Engineer

Job Title: Mid Level AI Models Engineer Company: Heidi Job Category: Machine Learning Roles & Responsibilities: We’re Heidi. We're building the future of healthcare by giving every clinician the earth's finest AI Care Partner. In just 18 months, our clinical AI products have absorbed the administrative chaos of 73 million patient visits. Today, we support over 2\.5 million patient sessions a week across 190\+ countries. The Role We help enterprise customers build AI systems tailored to their specific work. Our goal is to deliver better economics than relying solely on closed\-source models such as Claude, Gemini, and OpenAI. What You Will Do As a mid level engineer you will be working independently and confidently owning delivery across: Deployment and inference * Design cost\-effective cloud or on\-prem deployment approaches. * Select suitable infrastructure and serving configurations. * Improve reliability, latency, and operating cost. * Build monitoring, backup, and recovery processes. How We Show Up * Build for the next decade, not next quarter. Our targets are outrageous on purpose. The world's health doesn't have the luxury of incrementalism. * Lead, don't wait. We treat tomorrow's problems today. Sometimes we build what's needed before it's wanted, and we're fine with that. * Follow the evidence. Trust the patient. We pursue truth relentlessly. But when the subjective and objective disagree, we treat the patient, not the numbers. Ego is a comorbidity we can't afford. * Own the outcome. Everyone here carries the company. Raise problems with solutions, solve them end\-to\-end, and never be a bystander. * Ship, measure, go again. A button today, a workflow tomorrow. More iterations beat better planning. We're precise at pace, not reckless. * Live in clinicians' reality. Not the ideal workflow, the twenty\-patients\-before\-lunch actual one. We build for exhausted humans, and we'd better be decent ones while we do it. We take care of you. We offer a $1,000 annual learning and development budget, a $150/month health and wellness allowance, a $500 home office budget, 26 weeks paid primary parental leave and 18 weeks paid secondary parental leave, fertility support up to $10,000, four weeks of work from anywhere per year, and serious equity. Work Location: Melbourne, Victoria, Australia Availability: Full time

You will work across model customisation, deployment, agent systems, and customer delivery. We do not expect one person to specialise in everything. You should bring strong experience in at least two of these areas and be comfortable collaborating across the others. Customer delivery * Work with customers to understand their requirements and constraints. * Explain trade\-offs between quality, cost, privacy, and complexity. * Help take solutions from early discovery through production launch. What We Will Look For * Strong experience in at least two of the areas above. * Practical experience building or operating production AI systems. * Solid software engineering or machine learning engineering skills. * Familiarity with open\-weight language models and the modern LLM ecosystem. * Good judgement when balancing model quality, cost, latency, and reliability. * The ability to work through ambiguous technical and customer requirements. * Clear communication with both technical and non\-technical stakeholders. Key Skills: Machine Learning Salary: $1,000