Co-op - Machine Learning Engineer (Spanish/Portuguese) chez Lendbuzz

We are seeking an enthusiastic Machine Learning Co-op to join our team, focusing on our sales and collection AI chatbot projects within our Language Understanding and Semantic Analysis group. Ideal candidates should be proficient in Spanish or Portuguese, eager to explore the intricacies of the auto loan industry, and interested in building real-world applications of Large Language Models (LLMs). You will gain hands-on experience with large-scale data annotation, data cleaning, multilingual model evaluation, and product design.

Key Responsibilities:

Annotate chat data from sales-dealers and customers to train AI chatbots

Develop and refine prompts and Retrieval-Augmented Generation (RAG) technique cvg cant es to enhance the performance of zero-shot and few-shot language models (LLMs)

Assess the needs of dealers and customers, and implement AI chatbot functionalities to address those needs

Fine-tune language models as time permits and based on the availability of annotated data

Requirements:

Proficiency in either Spanish or Portuguese (spoken and written) is required

Pursuing a Bachelor’s degree in Computer Science or a related field, pursuing a M.S in Computer Science or a related field preferred (graduation date of December 2026 or later)

Coursework or experience in Data Structures, Algorithms, Linear Algebra, Probability, and foundational Machine Learning and Artificial Intelligence concepts

Familiarity with Python and its data analysis libraries

Strong grasp of core CS and ML concepts

Interview process will include questions on coursework, coding, probability, machine learning, and Linux fundamentals

Able to work 3-4 days in our downtown Boston office full time from January-August 2026

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