Speech Audio Engineer - AI Trainer

Mercor; Berlin; Vor Ort; EUR 42.000 - 65.000; Vollzeit

Zusammenfassung

Mercor is seeking audio engineers with strong experience editing and quality-checking voice recordings for speech and text-to-speech (TTS) applications, focusing on German-language audio. Native or near-native fluency is required to assess pronunciation, naturalness, and clarity for ML datasets.

You will edit, clean, and QA large batches of German recordings, ensure compliance with technical specs, and collaborate with teams across model training workflows to maintain throughput and consistency.

Qualifikationen

• Native or near-native German speaker with strong listening intuition.
• Experience editing speech or voice recordings (not music).
• Strong understanding of speech audio quality standards.
• Hands-on experience with iZotope RX, Pro Tools, or similar restoration software.
• Ability to identify and fix artifacts, inconsistencies, and technical defects.
• Experience working with high-volume audio datasets or structured workflows.
• Experience with TTS vendors or platforms (preferred).
• Involvement in speech ML or dataset creation/annotation workflows (preferred).
• Familiarity with audio QA pipelines, labeling, or evaluation processes (preferred).
• Experience directing or editing German voice talent recordings (preferred).

Aufgaben

• Edit and process German voice recordings for use in TTS and speech AI systems.
• Perform audio cleanup including silence trimming, breath reduction/removal, de-clicking, de-essing, and noise reduction.
• Conduct detailed quality assurance checks for clipping, distortion, background noise, artifacts, loudness, and level balancing.
• Ensure audio meets strict technical specifications for ML training pipelines.
• Evaluate recordings for German pronunciation accuracy, naturalness, and fluency.
• Work with large batches of recordings, maintaining consistency and throughput.
• Collaborate with teams working on German speech datasets, voice talent recordings, and model training workflows.

Kenntnisse

German fluency

Speech/voice editing

Speech audio quality standards

Audio restoration tools

Artifact and defect repair

High-volume datasets

Tools

iZotope RX

Pro Tools

Jobbeschreibung

OverviewWe're looking for audio engineers with strong experience editing and quality-checking voice recordings for speech and text-to-speech (TTS) applications, specifically for German-language audio. This role focuses on preparing high-quality audio datasets for machine learning systems, ensuring clarity, consistency, and technical compliance across large volumes of German speech data. Native or near-native German fluency is required to accurately assess speech quality, pronunciation, and naturalness.

What You'll Do

• Edit and process German voice recordings for use in TTS and speech AI systems

• Perform audio cleanup including silence trimming, breath reduction/removal, de-clicking, de-essing, and noise reduction

• Conduct detailed quality assurance checks for:

  • Clipping and distortion

  • Background noise and artifacts

  • Loudness consistency and level balancing

• Ensure audio meets strict technical specifications for ML training pipelines

• Evaluate recordings for German pronunciation accuracy, naturalness, and fluency

• Work with large batches of recordings, maintaining consistency and throughput

• Collaborate with teams working on German speech datasets, voice talent recordings, and model training workflows

Basic Qualifications

• Native or near-native German speaker with strong listening intuition for German speech nuances

• Experience editing speech or voice recordings (not just music production)

• Strong understanding of speech audio quality standards and common issues in recorded dialogue

• Hands-on experience with tools like iZotope RX, Pro Tools, or similar audio restoration software

• Ability to identify and fix artifacts, inconsistencies, and technical defects in audio

• Experience working with high-volume audio datasets or structured workflows

Preferred Qualifications

• Experience working with TTS vendors or platforms

• Prior involvement in speech ML, voice AI, or dataset creation/annotation workflows

• Familiarity with audio QA pipelines, labeling, or evaluation processes

• Experience directing or editing German voice talent recordings

Ideal Candidate Profile

• Detail-oriented with strong critical listening skills in German

• Comfortable working with repetitive, high-precision tasks at scale

• Able to balance speed and quality in production environments

• Familiar with the nuances of human German speech vs synthetic voice requirements