SALVIUS DUWE
Lille
Summary
Multilingual linguist and AI specialist with over 5 years of experience in translation, subtitling, linguistic QA, data annotation, and AI model evaluation. Strong expertise in prompt engineering, RLHF, supervised fine-tuning, and cross-cultural adaptation. Skilled at ensuring that AI outputs and translations are accurate, culturally resonant, and contextually appropriate.
Overview
6
6
years of professional experience
Work History
AI Linguist – Prompt Engineer & Evaluator (French)
Welocalize
09.2025 - Current
- Evaluated and refined AI-generated responses for accuracy, fluency, and cultural relevance.
- Designed prompts in French for training large language models.
- Conducted audio comprehension, transcription, and natural speech generation tasks.
- Contributed to optimization of next-generation multilingual conversational models.
- Remote
Image Annotator & Reviewer
Appen
02.2024 - Current
- Identified and labeled named entities (companies, places, job titles, skills).
- Annotated and reviewed images and AI-generated metadata.
- Improved photo description accuracy for usability and accessibility.
- Delivered feedback on AI-annotated datasets to improve performance.
- Remote
Linguistic QA Specialist (FR/EN)
Flitto
01.2024 - Current
- Reviewed long-context translations for lexical cohesion and semantic accuracy.
- Maintained and updated glossaries and translation memories.
- Evaluated AI translations and ensured alignment with style guides.
- Collaborated with project managers to refine QA reporting.
- Remote
Ads Quality Rater (Google Project)
Welocalize
10.2023 - Current
- Assessed ads for relevance, keyword alignment, and cultural appropriateness in FR/EN.
- Analyzed search queries and ad performance to refine targeting.
- Produced detailed reports on ad quality, compliance, and trends.
- Applied SEO and cultural insights to improve engagement rates.
- Remote
AI Data Trainer – Annotation & RLHF Projects
Outlier, RWS Group, Appen, Centific (OneForma)
01.2022 - Current
- Conducted RLHF and SFT evaluations across multiple domains.
- Annotated, classified, and ranked AI outputs (text, dialogue, multimodal data).
- Designed complex prompts to test contextual understanding.
- Reported systemic model errors and refined annotation guidelines.
- Remote
Freelance Translator – Subtitler – QA Specialist
ZOO Digital, TransPerfect, Lionbridge, Welocalize, Upwork, Workana
01.2020 - Current
- Translated and localized content in technical, medical, legal, media, and fintech domains.
- Subtitled films, interviews, and documentaries with precise timing and cultural adaptation.
- Delivered linguistic QA reviews ensuring brand voice and termbase alignment.
- Managed multiple projects in fast-paced workflows.
Transcriber & Subtitler – Research & Media Projects
Scriptoniq, Translators Without Borders, VICE News, Government of Tanzania
01.2022 - 01.2025
- Transcribed multilingual audio with code-switching (EN–FR–SW).
- Created subtitles for research, humanitarian, and media content.
- Ensured cultural sensitivity when handling sensitive topics.
- Provided annotations and metadata for academic and journalistic projects.
- Remote
NLP Engineer Intern
Webotit
06.2022 - 09.2022
- Trained and optimized chatbots for customer engagement.
- Audited dialogues to improve NLU (Natural Language Understanding).
- Enriched knowledge bases using JSON structures.
- Developed conversation texts based on cognitive science research.
Education
Master’s in Language Sciences - Lexicography, Terminology & NLP
Université de Lille
Lille, France01.2023
Bachelor of Arts - Linguistics (English, French, Swahili)
University of Dar es Salaam
Tanzania01.2017
Skills
- Translation & Localization
- AI Data Annotation & Evaluation
- Prompt Engineering
- Linguistic Quality Assurance (LQA)
- Transcription & Subtitling
- Editing & Proofreading
- Technical & Scientific Translation
- Creative Content Writing & Localization
- Tool Proficiency (Trados, MemoQ, Smartcat, etc)
- Project Management & Client Communication
LANGUAGES
French: C2
English: C2
Swahili: Native
Timeline
AI Linguist – Prompt Engineer & Evaluator (French)
Welocalize
09.2025 - Current
Image Annotator & Reviewer
Appen
02.2024 - Current
Linguistic QA Specialist (FR/EN)
Flitto
01.2024 - Current
Ads Quality Rater (Google Project)
Welocalize
10.2023 - Current
NLP Engineer Intern
Webotit
06.2022 - 09.2022
AI Data Trainer – Annotation & RLHF Projects
Outlier, RWS Group, Appen, Centific (OneForma)
01.2022 - Current
Transcriber & Subtitler – Research & Media Projects
Scriptoniq, Translators Without Borders, VICE News, Government of Tanzania
01.2022 - 01.2025
Freelance Translator – Subtitler – QA Specialist
ZOO Digital, TransPerfect, Lionbridge, Welocalize, Upwork, Workana
01.2020 - Current
Bachelor of Arts - Linguistics (English, French, Swahili)
University of Dar es Salaam
Master’s in Language Sciences - Lexicography, Terminology & NLP
Université de Lille