Applied ML Engineer (Speech/ASR/LLMs) - Senior (Brazil / Argentina)

Applied ML Engineer (Speech/ASR/LLMs) - Senior 📍 Remote – Argentina/Brazil 🕘 Full-time About the role We’re looking for an Applied ML Engineer to lead the development and operationalization of machine learning models powering real-world AI products. The primary focus of the role will be building and improving speech-to-text (ASR) systems for medical conversations in Brazilian Portuguese and Latin American Spanish, while also contributing to LLM fine-tuning, clinical classifiers, and production ML infrastructure. This is a highly hands-on role focused on taking models from experimentation to production. What you’ll do Design, train, fine-tune, and deploy ML models for speech and language applications Build and maintain training pipelines and evaluation frameworks Work on ASR systems for domain-specific medical conversations Develop and improve data pipelines and ML infrastructure Collaborate on LLM fine-tuning and classifier development Optimize model performance, reliability, and scalability Partner with product and domain teams to translate business needs into ML solutions Contribute to production deployment and monitoring of ML systems What we’re looking for Strong experience building and operationalizing ML models in production Hands-on experience with: ASR / speech models / audio ML PyTorch or modern ML frameworks ML infrastructure and distributed training Experience building: training pipelines evaluation frameworks production ML workflows Strong programming skills in Python Ability to work independently in ambiguous environments Experience collaborating across technical and non-technical teams Nice to have Experience with: LLM fine-tuning orchestration frameworks clinical or healthcare data Experience building data flywheels or feedback loops Experience with GPU orchestration and experiment tracking Fluency in Portuguese and/or Spanish Work model Remote – Americas Preference for candidates located near São Paulo or Medellín (not mandatory) Full-time 💡 Note This is an applied ML engineering role, not a pure research position. We are looking for builders who can take models from experimentation through deployment and production operation. How to apply Please apply directly following the link. If it does not suit you, please share it with your colleagues. Thanks!