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Angel Contreras

Senior Data Scientist specializing in machine learning, NLP, and MLOps

AstroSirensUniversity of HoustonDallas, TX8 Years ExperienceSenior Level

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About

ML/NLP engineer with experience building production-grade legal-tech and data platforms, including a GPT-4/LangChain contract review system using ElasticSearch embeddings (RAG) deployed on AWS EKS. Strong in entity resolution and scalable batch/streaming pipelines (Kafka/Spark), with measurable impact (70%+ reduction in contract review time) and a focus on monitoring and CI/CD for reliable delivery.

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Key Strengths

  • Built GPT-4 + LangChain contract review pipeline with embeddings in ElasticSearch (RAG) for legal workflows
  • Productionized ML/NLP systems on AWS EKS using Docker and Terraform for scalability/reliability
  • Improved contract review time by 70%+ before moving prototype to production
  • Designed entity resolution pipeline using fuzzy matching (Levenshtein) + DBSCAN with business rules; validated via precision/recall and downstream model impact
  • Optimized data pipeline performance via vectorized Pandas operations, batch SQL, caching (Redis), and selective compute for ambiguous/high-value cases
  • Refactored streaming fraud detection pipeline (Kafka + Spark) to reduce latency using Spark Structured Streaming and modular components
  • Implemented monitoring plus CI/CD (GitHub Actions) to improve maintainability and reduce errors

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Experience

Senior Data ScientistAstroSirens · Mar 2022 – Present
Machine Learning EngineerDatabricks · Aug 2018 – Feb 2022
Data Science InternNetflix · Nov 2017 – May 2018internship

Education

University of Houstonmaster, Engineering Data Science & AI (2017)
University of Houstonbachelor, Computer Science (2015)

Skills

PythonRSQLScalaJavaCC++BashMachine LearningArtificial IntelligencePredictive ModelingDeep LearningA/B TestingTime Series ForecastingClustering

Languages

English

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Angel ContrerasSenior Data Scientist specializing in machine learning, NLP, and MLOps