Senior Machine Learning Engineer - NLP (f/m/d)

XUND is a leading digital health scale-up that enables healthcare companies to digitize patient interactions and translate data into actionable insights.It's our vision to improve the quality and accessibility of healthcare by bringing together medicine, technology, and a human-centered mindset. But we cannot do it alone: we need leaders, doers, and innovative minds to turn our vision into reality.That is why we are looking for an ambitious, highly committed, and entrepreneurial team player who shares our values of putting patients first, building an inspiring and open environment and challenging the status quo.The Role Join our NLP team as a Senior Machine Learning Engineer and help us build cutting-edge NLP products in the medical field. Your NLP expertise will drive the teams modeling efforts using real-world large scale data from healthcare providers. You will work closely with medical experts as well as business partners to bring value to patients and practicing doctors alike.Your ResponsibilitiesDevelop and deploy high-quality NLP models that directly support clinicians and patientsDrive innovation in applied language modeling, contributing to research on domain-specific LLMs and retrieval-augmented systems for medical contextsTranslate research insights into scalable, production-grade software efficiently in an agile and close-knit teamWork closely with clinicians to define needs and validate model behaviorShape technical direction and best practices for NLP and ML engineeringCollaborate in research projects with universities and healthcare providersYour ProfileMSc or PhD in computer science, mathematics, or related field+4 years of proven industry experience in natural language processing and/or information retrieval (or appropriate academic research)Expertise in language modeling and general ML architecturesExtensive experience in software development with PythonResident in the EU with a valid work permitNice to haveProfessional or academic experience in the medical domainExperience with designing and overseeing medium- or large-scale data annotation campaigns, pre-training/fine-tuning LLMs, RLHFFamiliarity with the PyTorch, HuggingFace, SentenceTransformers, and MCP ecosystemsYour BenefitsEmbark on a journey with one of Europe’s fastest-growing digital health scale-ups and make a real impact in a purpose-driven environment!Take on exciting challenges while working in a dynamic space where creativity and fresh ideas are always encouraged.Benefit from a dedicated training budget and professional development time, because we believe in growing together and supporting your skill-building journey.Enjoy the flexibility to work from wherever suits you best – whether that’s your cozy home office, a café down the street, or one of our offices in Vienna, Budapest, or London.Join regular team events at each office and several company-wide celebrations throughout the year to connect with colleagues, share experiences, and create lasting memories.Be part of a vibrant, open culture with flat hierarchies and direct communication, where your voice matters and everyone’s ideas are heard.Plus, office dogs! They're here to keep the vibes chill and remind us all to take a paws and relax. The minimum salary for this position is according to the IT collective agreement (EUR 3.843 gross monthly salary for full-time employment). Willingness to overpay is given and depends on the respective qualification and experience. On top of that, we also let all our employees participate in our Virtual Stock Option Plans (VSOPs), ensuring that they can directly benefit from our collective success.