Niklas Ostwald

Niklas Ostwald

AI Trainer
Germany
German, English

About Me

Native German speaker with over 8 years of extensive experience in transcription, ASR data annotation, transcript correction, translation, quality assurance review, and AI audio evaluation. Proven ability to deliver high…

Experience

AI Audio Evaluator / Transcription Specialist

Outlier AI
Feb 2026 - Present · 5 months

Conducted direct comparison of AI-generated audio outputs with human-recorded samples to identify transcription inconsistencies.
Utilized audio editing software and linguistic validation techniques.

AI Audio Evaluator / Transcription Specialist

Outlier AI
Feb 2026 - Present · 5 months

Conducted direct comparison of AI-generated audio outputs with human-recorded samples to identify transcription inconsistencies, utilizing audio editing software and linguistic validation techniques.

Transcription & Annotation Specialist

TELUS International
Mar 2023 - Sep 2023 · 6 months

Utilized ASR annotation tools and linguistic background to assess and enhance transcription accuracy for machine learning training sets.
Refined and standardized transcription protocols to improve both consistency and efficiency in the creation of high-quality datasets for language model training.

Transcription & Annotation Specialist

TELUS International
Mar 2023 - Sep 2023 · 6 months

Utilized ASR annotation tools and linguistic background to assess and enhance transcription accuracy for machine learning training sets., Refined and standardized transcription protocols to improve both consistency and efficiency in the creation of high-quality datasets for language model training.

Senior Transcriptionist / QA Team Member

TELUS International
Feb 2019 - Nov 2021 · 2 years 9 months

Transcribed and annotated social media audio using tagging tools and linguistic validation software to support high-quality training data for speech technologies.
Conducted in-depth QA audits of transcribed social media audio content to verify accuracy and adherence to project guidelines utilizing QA review frameworks and audio tools.

Senior Transcriptionist / QA Team Member

TELUS International
Feb 2019 - Nov 2021 · 2 years 9 months

Transcribed and annotated social media audio using tagging tools and linguistic validation software to support high-quality training data for speech technologies., Conducted in-depth QA audits of transcribed social media audio content to verify accuracy and adherence to project guidelines utilizing QA review frameworks and audio tools.

Translator & Transcriptionist

RWS
Apr 2018 - Dec 2018 · 8 months

Enhanced translation quality by applying audio segmentation techniques and aligning translated text with corresponding speech segments.
Transcribed multilingual spoken content utilizing transcription platforms and language editing tools for error minimization.

Translator & Transcriptionist

RWS
Apr 2018 - Dec 2018 · 7 months

Enhanced translation quality by applying audio segmentation techniques and aligning translated text with corresponding speech segments., Transcribed multilingual spoken content utilizing transcription platforms and language editing tools for error minimization.

Transcription Specialist

DataVio (formerly Teemwork.ai)
Jan 2017 - Feb 2018 · 1 year 1 month

Implemented linguistic rules and error detection tools to rectify discrepancies in transcribed material for improved automatic speech recognition models.

Transcription Specialist

DataVio (formerly Teemwork.ai)
Jan 2017 - Feb 2018 · 1 year 1 month

Implemented linguistic rules and error detection tools to rectify discrepancies in transcribed material for improved automatic speech recognition models.

Skills

Translation Audio-aligned transcript correction ASR annotation QA review AI audio evaluation Transcription Audio editing software Linguistic validation techniques Tagging tools QA review frameworks Audio tools Transcription platforms Language editing tools Linguistic rules Error detection tools
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