Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m Arthur Santana, a PhD in Computational Linguistics with extensive hands-on experience in NLP, language data QA, and linguistics-driven AI development. I design grammars, annotate linguistic data, and build NLU/NLG systems, always aiming to improve language technology’s accuracy and usability. Over the years I’ve collaborated with Google Brazil, Telus Digital, Cerence, and academic teams across Brazil and the US, leading training, quality control, and data-driven improvements for multilingual NLP products. I’m passionate about bridging research and product, mentoring teams, and turning linguistic insight into robust AI features.…I’m Arthur Santana, a PhD in Computational Linguistics with extensive hands-on experience in NLP, language data QA, and linguistics-driven AI development. I design grammars, annotate linguistic data, and build NLU/NLG systems, always aiming to improve language technology’s accuracy and usability. Over the years I’ve collaborated with Google Brazil, Telus Digital, Cerence, and academic teams across Brazil and the US, leading training, quality control, and data-driven improvements for multilingual NLP products. I’m passionate about bridging research and product, mentoring teams, and turning linguistic insight into robust AI features.

Arthur Santana

AI Prompt Engineer, Audio Transcriber, AI Ethics Consultant, +7





I’m Arthur Santana, a PhD in Computational Linguistics with extensive hands-on experience in NLP, language data QA, and linguistics-driven AI development. I design grammars, annotate linguistic data, and build NLU/NLG systems, always aiming to improve language technology’s accuracy and usability. Over the years I’ve collaborated with Google Brazil, Telus Digital, Cerence, and academic teams across Brazil and the US, leading training, quality control, and data-driven improvements for multilingual NLP products. I’m passionate about bridging research and product, mentoring teams, and turning linguistic insight into robust AI features.…I’m Arthur Santana, a PhD in Computational Linguistics with extensive hands-on experience in NLP, language data QA, and linguistics-driven AI development. I design grammars, annotate linguistic data, and build NLU/NLG systems, always aiming to improve language technology’s accuracy and usability. Over the years I’ve collaborated with Google Brazil, Telus Digital, Cerence, and academic teams across Brazil and the US, leading training, quality control, and data-driven improvements for multilingual NLP products. I’m passionate about bridging research and product, mentoring teams, and turning linguistic insight into robust AI features.

Available to hire

I’m Arthur Santana, a PhD in Computational Linguistics with extensive hands-on experience in NLP, language data QA, and linguistics-driven AI development. I design grammars, annotate linguistic data, and build NLU/NLG systems, always aiming to improve language technology’s accuracy and usability.

Over the years I’ve collaborated with Google Brazil, Telus Digital, Cerence, and academic teams across Brazil and the US, leading training, quality control, and data-driven improvements for multilingual NLP products. I’m passionate about bridging research and product, mentoring teams, and turning linguistic insight into robust AI features.

Skills

Python

Data Visualization

Experience Level

Python

Expert

Intermediate

Data Visualization

Intermediate

Language

Portuguese

Fluent

English

Fluent

Work Experience

Quality Controller at Telus Digital

June 1, 2023 - Present

Lead quality assurance for language data projects, ensuring accuracy, consistency, and alignment with client specifications; collaborate with project managers and subject matter experts to refine task guidelines and resolve quality issues; conduct audits and performance reviews of annotators and re viewers; analyze error patterns and generate insights to improve data quality and team efficiency; support onboarding and training; create, update, and edit annotation and QA guidelines; use quality tracking tools and dashboards to report on KPIs, monitor SLA compliance, and drive continuous improvement.

Senior Linguist at Google Brazil (via Telus Digital)

June 1, 2025 - October 10, 2025

Support the Project Manager on management tasks; perform review of work authored by Linguists; elaborate and conduct training activities for Linguists and new hires; provide extensive linguistic expertise for developing an AI product using NLP techniques; develop complex grammars for NLU; create templates for NLG; evaluate current system outputs; annotate and review linguistic data.

Associate Linguist at Google Brazil (via Telus Digital)

September 1, 2023 - October 10, 2025

NLU grammar development; NLG development; elaborate guidelines for NLP projects; annotate and review linguistic data; provide linguistic analysis and support for NLU and NLG projects; response modeling; label text for disambiguation, expansion, and text normalization; annotating lexicon entries according to guidelines; deriving NLP data.

NLP Language Developer at Cerence (via Maize)

August 1, 2024 - October 10, 2025

Developed NLP components: write rules, build grammars/FSTs; contributed to the design of new features by extending existing annotation schemas to cover new areas; used modeling tools to bootstrap and test new functionalities; created annotation systems and mappings for Portuguese; analyzed system performance and identified areas for improvement.

Computational Linguist at Portuguese International Institute

July 1, 2022 - October 10, 2025

Supported the Scientific and Technical Portuguese Terminologies platform development; data cleaning and wrangling; flexional paradigm script design.

English Teacher at Cultura Inglesa

December 31, 2013 - October 10, 2025

English teacher teaching language to professionals; responsible for curriculum delivery and student progress.

English Teacher at English for Business

December 31, 2017 - October 10, 2025

English teacher focusing on business communication and professional language skills.

Teacher's Assistant at University of São Paulo (USP)

December 31, 2019 - October 10, 2025

Teaching assistant supporting linguistics coursework and student projects.