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Roberto Amparan

@robertoamparan

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Multilingual Machine Learning / NLP scientist specializing in applied NER and model interpretability.

United States

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What I'm looking for

I seek roles building production NLP/ML systems where I can lead NER, model-interpretability, and cross-functional delivery, ideally in collaborative, research-to-production environments.

I am a multilingual machine learning and NLP scientist with extensive applied experience building enterprise NER systems, prototype production models, and model-interpretability analyses. I led end-to-end projects at Wells Fargo and AdviNow Medical, improving NER F1-scores from 68% to 91.07% and token-level F1 from 85% to 98%, and authored detailed model development and annotation documentation.

I combine linguistics training with software engineering skills—developing annotation pipelines, mentoring junior scientists, optimizing algorithms for performance, and producing demonstrable results including a granted patent for NER scoring innovations. I collaborate across teams to deliver interpretable, production-ready ML solutions in conversational, biomedical, and enterprise contexts.

Experience

Work history, roles, and key accomplishments

Quantitative Analytics Specialist

Wells Fargo

Jan 2020 - Dec 2022 (2 years 11 months)

Led research, prototyping, and deployment of enterprise NER de-identification models for customer chat data, improving entity-level F1 from 68% to 91.07% and managing demonstrations and stakeholder deliverables across the AI/ML Center of Excellence.

Python PyTorch SpaCy Transfer Learning NER Model Evaluation Data Annotation

Intern, NLP Engineer

AdviNow Medical

Jan 2018 - Dec 2019 (1 year 11 months)

Developed an in-house biomedical NER system mapping symptoms and treatments to medical glossaries, increasing token-level F1 from 85% to 98% and improving runtime by 4.5x through algorithmic optimization.

Python NER Rule Based Grammar Tokenization Biomedical NLP Performance Optimization Data Cleaning Model Evaluation

Freelance Translator

Self Employed

Jan 2012 - Dec 2018 (6 years 11 months)

Provided professional translation services (French, Spanish, Italian to English) for clients worldwide, supporting linguistic quality and domain-appropriate terminology across projects.

Translation Linguistic Analysis Editing Quality Assurance Cross Cultural Communication

Education

Degrees, certifications, and relevant coursework

Mills College

Post-baccalaureate, Computer Science (Linguistics/NLP specialization)

Post-baccalaureate interdisciplinary computer science studies with a linguistics/NLP specialization completed in 2018.

Stanford University (Stanza NLP library reference/coursework)

Professional Certificate, Translation / NLP

Professional certificate-level coursework or training in NLP tools and libraries referenced in 2015 (professional certificate in Translation and related NLP work).