Our mission at Mundiale is to simplify the relationship between brands and their consumers by enabling more human, accurate, and seamless interactions—powered by cutting-edge technology and our proprietary methodology. To achieve this, we’re looking for highly skilled professionals to join our team of Munders and embrace new, exciting challenges every day! We currently have an opening for a **Machine Learning Engineer**. Explore the opportunity below and accelerate your career at a company that never stops growing! **Responsibilities and duties** * Design, train, and validate language models (LLMs) applied to NLP. * Build and maintain scalable text pre- and post-processing pipelines. * Develop and integrate services and APIs for model consumption in messaging and conversational automation systems. **Requirements and qualifications** * Proven experience developing systems (with focus on APIs and integrations with language models). * Proficiency in Fine-Tuning, Transfer Learning, and Prompt Engineering techniques. * Solid knowledge of applied NLP (tokenization, embeddings, RAG, etc.). * Ability to work with distributed and scalable architectures. **Preferred qualifications:** * Experience with frameworks such as PyTorch, TensorFlow, or Hugging Face. * Familiarity with MLOps tools and model deployment (Docker, FastAPI, MLflow). * Interest in messaging, automation, and AI applied to conversational products. **Additional information** AND YOU GET: * Flexible Benefit Program (you decide how to use it according to your needs: culture, ride-hailing apps, subscriptions, fitness, meals, etc.); * Unimed Unipart Health Insurance Plan; * Career development path; * Hybrid work model; * Birthday Day Off; * Short Friday; Collaborative and dynamic work environment. * Every day for over 20 years, at Mundiale we begin our workday thinking about how we can positively impact someone’s experience. Since the start of our journey, we’ve kept our focus firmly on the customer. Our work is built on this principle: united teams thinking, building, and **revolutionizing experiences**. We are an authentic team of **over 500 Munders across 19 Brazilian states.** By the way, a **Munder** is each one of us at Mundiale—free to be who you truly are. In such an environment, incredible things happen constantly! We value diverse teams (with diverse perspectives), curious minds, and those who build creative and effective solutions. That’s why we fall in love with problems—not solutions. This is our **Way.** Our team is continuously evolving, striving to improve by 1% every day. And it’s people like you—ready to build together, share experiences, and learn—who we invite to explore our opportunities. If you want to grow your career at a company that grows with you, join **Mundiale!**