Senior AI Engineer (Hybrid - São Paulo) - NLP, LLM - Analytics / Data market
5+ years
Full-time (40h)
Analytics / Data
Hybrid
NLP
LLM
SQL
Requirements
Must-haves
- 5+ years of experience in machine learning
- Experience with NLP, prompt engineering, and model optimization
- Proficiency with LLMs frameworks (e.g. FastAPI, LangChain, Langfuse)
- Proficiency in TensorFlow, PyTorch, and SQL
- Skilled in building and managing data pipelines using tools (e.g. Apache Airflow, SQL), and cloud data services (e.g. Amazon S3, Redshift, Data Lakes)
- Experience working in a startup environment
- Strong communication skills in both spoken and written English
- Bachelor's degree (or similar) in Computer Science, Engineering, or a related field
- Availability to go to the office in Jardins, São Paulo 3x a week
Nice-to-haves
- Experience with vector databases, RAG, and NLP classification tasks
- Proficiency in multi-agent workflows (e.g. Swarm, LangGraph)
- Currently based in São Paulo, SP - Brazil
What you will work on
- Develop and Fine-Tune LLMs
- Use prompt engineering to enhance model response quality and contextual relevance, ensuring high performance in NLP applications
- Build evaluation frameworks for all deployed models, regularly measuring performance and iterating on prompts and parameters to maintain quality
- Create end-to-end data pipelines for customer analysis and monitoring, applying AI/ML methods for data enrichment and transforming raw data into actionable insights
- Deploy machine learning models in production, focusing on scalability, reliability, and a seamless fit with business applications
- Collaborate with product and engineering teams to ensure that AI-driven solutions meet business goals and deliver value to users