Senior Applied Data Scientist - ML, NLP & LLMs

Applaudo; Comisión de Fomento de Perú; On-site; ARS 181,747,000 - 272,620,000; Full time

Job summary

Applaudo is seeking an experienced Data Scientist to lead applied ML across large, messy data sets. You will build embeddings and LLM-based matching systems, design robust experiments, and optimize for accuracy and cost. You will collaborate with engineering and business stakeholders to deliver scalable, measurable improvements.

The role emphasizes end-to-end experimentation, defends technical recommendations, and requires autonomy and strong communication in a fast-paced AI-native environment.

Qualifications

• 5+ years of professional Data Science / Machine Learning experience.
• Strong applied Machine Learning fundamentals.
• Excellent Python and SQL skills.
• Hands-on experience with embeddings and semantic similarity.
• Practical experience applying LLMs to real-world problems.
• Experience with supervised and unsupervised learning.
• Strong experience with classification and NLP.
• Working knowledge of neural networks and transformer architectures.
• Hands-on experience with TensorFlow, PyTorch, PyCaret, or equivalent ML frameworks.
• Experience retraining or maintaining classification models in production.
• Strong experimental design and model evaluation skills.
• Experience defining baselines, metrics, test sets, and error-analysis processes.
• Ability to evaluate model quality and demonstrate measurable improvements.
• Strong understanding of scalability and ML inference costs.

Responsibilities

• Build and evaluate ML approaches for company/entity matching.
• Develop embedding and LLM-based matching approaches.
• Develop scoring and ranking methodologies to identify true matches and distinguish them from duplicates, lookalikes, and unrelated entities.
• Work with messy data, including names, aliases, domains, websites, firmographic attributes, multilingual records, and data hierarchies.
• Define benchmark datasets, metrics, baselines, and error-analysis processes.
• Design and execute experiments to validate hypotheses.
• Compare LLM-assisted approaches against lower-cost alternatives.
• Analyze model behavior, edge cases, and trade-offs.
• Consider inference economics and scalability from the beginning.
• Communicate experimental findings and recommendations to engineering and business stakeholders.
• Independently establish experimental pipelines and research approaches.
• Clearly document both successful and unsuccessful experiments.

Skills

Years of DS/ML

Python

SQL

Embeddings

LLMs

NLP

Classification

Neural networks

TensorFlow

PyTorch

PyCaret

Experiment design

Baselines & metrics

Cost-aware inference

Tools

TensorFlow

PyTorch

PyCaret

Spark

Snowflake

Databricks

BigQuery

Job description

Applaudo is seeking an experienced Data Scientist to lead applied ML across large, messy data sets. You will build embeddings and LLM-based matching systems, design robust experiments, and optimize for accuracy and cost. You will collaborate with engineering and business stakeholders to deliver scalable, measurable improvements.

The role emphasizes end-to-end experimentation, defends technical recommendations, and requires autonomy and strong communication in a fast-paced AI-native environment.