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Sílvia Rustullet

@slviarustullet

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Multilingual linguistic expert leading NLP, speech technology, and QA initiatives.

Portugal

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What I'm looking for

I seek senior roles combining linguistic expertise and QA in NLP or speech technology, with cross-functional teams, impactful product ownership, and opportunities to mentor and drive data-driven improvements.

I am a multilingual Linguistic Expert and Quality Lead with 15+ years of experience in Natural Language Processing, Speech Technology, and Quality Assurance. I combine deep linguistic knowledge with practical QA methodologies to improve AI and voice products across markets.

I have led multi-location teams and mentored on-site and remote staff while overseeing release monitoring, LLM testing, defect triage, and performance/load testing to ensure timely delivery of robust language solutions.

My hands-on technical work includes NLP grammar creation, phonemic transcription, semantic analysis, speech corpus development, and data localization for diverse languages including Catalan, Spanish, English, and Portuguese.

I focus on data-driven debugging, root-cause analysis, UX evaluation, and process improvement to raise product quality; I have supported major clients such as Google, Microsoft, Amazon, and worked with vendor partners like Cognizant, Adecco, and Appen.

Experience

Work history, roles, and key accomplishments

Current

Linguistic Expert & Quality Lead

Current

Qualitest Group

Jan 2020 - Present (5 years 9 months)

Led a multi-location team for release monitoring, search usability optimization, LLM testing and defect triage, improving QA workflows and delivering high-quality language technology solutions for Google clients.

NLP QA Automation Defect Triage Performance Testing Semantic Analysis Localization Team Leadership

Video Content Analyst

Cognizant Technologies

Jan 2019 - Dec 2019 (11 months)

Managed video content moderation QA to ensure compliance with Trust & Safety policies, applying linguistic expertise to resolve complex content-quality issues and enhance user safety.

Content Moderation Trust & Safety Quality Assurance Linguistic Analysis Compliance Policies Reporting

Analytic Linguistic Project Manager

Adecco

Apr 2018 - Oct 2018 (6 months)

Managed localization projects for AI Assistant voice messages (pt-PT), delivering localized content and maintaining quality standards across project workflows.

Localization Project Management Workflow Optimization Quality Control

Freelance Contractor

Various Clients

Mar 2014 - Apr 2018 (4 years 1 month)

Delivered QA and linguistic data integrity for speech-technology projects (Voicebox, Microsoft, Amazon), designing data collection protocols and optimizing grammars for ASR/TTS systems.

Data Annotation TTS ASR QA Grammar Engineering Data Collection Morphology & Syntax Validation Voice Coaching

Speech Linguistic Project Manager

Google

May 2011 - Sep 2013 (2 years 4 months)

Built foundational phonemic corpora and led voice transcription teams, presenting ASR performance insights to stakeholders and coordinating multi-location linguistic teams for Google Assistant data.

ASR Evaluation Team Leadership Performance Analysis Cross Location Coordination

Linguistic Quality Specialist

Butler Hill Group

Feb 2010 - May 2011 (1 year 3 months)

Ensured linguistic data quality for speech and language technologies by revising MT outputs, performing acoustic transcription, and building corpora for Spanish, Catalan, and English.

Corpus Building Data Curation

Spanish & Catalan Language Expert

Microsoft

Jan 2008 - Feb 2010 (2 years 1 month)

Led linguistic development and QA for Catalan TTS, creating the speech corpus, syllabification guides, and providing text normalization and parser guidance to engineering teams.

Corpus Design Syllabification Voice Coaching