Freelance translator profile for Stephen Olowu



Translator's name:Stephen Olowu
Language pair:English to German translator
Country of residence:Germany
Activity:Active since 2025
Membership status:Basic member

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Stephen Olowu Olusola
Email: olusolacrown555@gmail.com LinkedIn: olowu olusola
Professional Title
Multilingual Language Specialist | German-to-English Translator | Data Annotation & AI
Training Expert
Professional Summary
Highly skilled and detail-oriented German-to-English Translator with over 6 years of experience
delivering high-volume translations across technical, medical, legal, marketing, and general
content domains. Proficient in subtitle translation, transcription, and data annotation (image
and text), with 4+ years of experience supporting AI model training through prompt creation,
evaluation, and data labeling. Experienced in editorial content creation, logical writing, and AI
output refinement for advanced LLM training. Adept in working with industry-standard tools like
Trados Studio, memoQ, Smartcat, Aegisub, Subtitle Edit, Labelbox, Prodigy, and Amazon
SageMaker Ground Truth. Equipped with a Master's and Bachelor's degree in Translation &
Linguistics from reputable European institutions. Demonstrated ability to deliver precise,
culturally adaptive, and deadline-driven outputs for global clients.
Core Competencies & Tools
• Translation (German ↔ English) | Localization | Proofreading
• Subtitling & Timecoding | Transcription | QA & Review
• Image & Text Annotation | Data Labeling | Prompt Creation & Evaluation
• Editorial & AI Writing | Style Guide Adherence | Human-in-the-loop Training
• CAT Tools: SDL Trados Studio, memoQ, Smartcat
• Subtitling Tools: Subtitle Edit, Aegisub
• Annotation Tools: Labelbox, Prodigy, Amazon SageMaker
• File formats: SRT, VTT, DOCX, XLIFF, JSON, CSV
Professional Experience
1. Freelance German-to-English Translator
Self-Employed | Remote | Jan 2019
Key Responsibilities:
• Translated technical manuals, healthcare documents, legal contracts, and marketing
materials from German to English.
• Collaborated with agencies and direct clients for localization projects across Europe.
• Maintained terminology consistency using CAT tools.
Key Achievements:
• Delivered over 2 million words translated with 99.8% client satisfaction.
• Completed 500+ projects with major clients including RWS, TransPerfect, and SDL.
2. Subtitle Translator & Transcription Specialist
Beyond Translations GmbH | Munich, Germany | Aug 2020
Key Responsibilities:
• Translated and timecoded subtitles for film, series, and educational content.
• Reviewed and QA-checked subtitle files for sync and linguistic quality.
Key Achievements:
• Subtitled over 300 hours of content for Netflix, Amazon Prime, and ARD.
• Reduced subtitle error rate by 85% through enhanced quality workflows.
3. Data Annotator – NLP & Computer Vision
TELUS International | Remote | Jan 2021
Key Responsibilities:
• Labeled image and text datasets for sentiment analysis, OCR, object detection, and facial
recognition.
• Followed strict annotation guidelines and quality control protocols.
Key Achievements:
• Achieved 98.5% QA scores across multiple annotation platforms.
• Annotated and labeled over 150,000 data points across 25+ projects.
4. Prompt Engineer – LLM Training Specialist
Scale AI | Remote | Jul 2022
Key Responsibilities:
• Created and evaluated prompts for large language models (LLMs) to ensure accurate
contextual output.
• Conducted comparative assessments and quality scoring of AI-generated responses.
Key Achievements:
• Contributed to 7 fine-tuning cycles of AI chat models used in customer service bots.
• Improved model accuracy by 12% through effective prompt optimization.
5. Localization QA Specialist
Kubus Translations | Hamburg, Germany | Mar 2020 – Dec 2022
Key Responsibilities:
• Conducted linguistic QA of translated files ensuring accuracy, tone, and cultural
relevance.
• Utilized CAT tools to track inconsistencies and terminology errors.
Key Achievements:
• Improved QA efficiency by 40% through implementation of automated quality checks.
• Participated in ISO 17100-compliant localization projects.
6. Language Data Specialist – AI Training
Lionbridge (now TELUS AI) | Remote | Sep 2019 – Jun 2021
Key Responsibilities:
• Participated in multilingual data collection, labeling, and evaluation for AI speech and
vision models.
• Performed sentiment tagging, intent recognition, and entity extraction.
Key Achievements:
• Enhanced dataset diversity by contributing to multilingual corpus building.
• Recognized for outstanding data accuracy in cross-functional evaluation team.
7. AI Writing & Editorial Specialist (Freelance)
MindSpark AI | Remote | Jan 2023
Key Responsibilities:
• Created original, nuanced, and contextually rich responses for AI training datasets across
education, health, business, and cultural topics.
• Edited and refined AI-generated outputs for style, grammar, tone, and factual accuracy.
• Collaborated with QA reviewers to calibrate output quality to align with project
specifications and linguistic nuance.
Key Achievements:
• Delivered over 3,000 prompt-response pairs with >97% approval rate.
• Recognized for producing content used in benchmark datasets for LLM fine-tuning.
• Reduced guideline deviation issues by 35% through peer-review process improvements.
8. Language Content Creator & Prompt Engineer
VerbatimAI Projects (via Upwork & Prolific) | Remote | Oct 2022
Key Responsibilities:
• Developed natural language prompts for Generative AI systems to evaluate logical
reasoning and contextual understanding.
• Crafted multilingual examples with English focus, incorporating domain-specific
vocabulary and tone adaptation.
• Proofread, fact-checked, and reviewed peer submissions to uphold editorial standards.
Key Achievements:
• Contributed to AI training projects for ed-tech and med-tech clients, resulting in 12%
better response quality metrics.
• Authored research-backed explanations for model corrections and logic enhancement.
• Supported model alignment by preparing ethical, unbiased, and culturally sensitive
content for reinforcement learning.
Education
MA in Translation & Linguistics
Leipzig University, Germany | Graduated: 2019
Specialization: German-English Translation, Localization Techniques
BA in Language and Communication Studies
Radboud University, Nijmegen, Netherlands | Graduated: 2017
Minor: Computational Linguistics & Media Translation
Certifications
• SDL Trados Studio 2021 Certified Translator
• Coursera: AI For Everyone – Andrew Ng
• Udemy: Complete Guide to Subtitling and Captioning
• LinkedIn Learning: Data Annotation for AI & Machine Learning