Speech & Audio AI Specialist (International BPO)

Mindtel; Delhi; On-site; INR 400,000 - 700,000; Full time

Job summary

Mindtel is seeking a detail-oriented Evaluator for Speech & Language AI in Delhi to join our on-site team. You will annotate and transcribe audio, evaluate speech recognition models, and help improve multilingual voice systems used in enterprise applications.

You will collaborate with AI engineers, measure WER/CER, and contribute to data quality benchmarks. Experience with audio tools and a linguistics background is preferred. This is a hands-on role with growth potential.

Qualifications

• Experience in annotating and evaluating speech datasets.
• Familiarity with transcription and phonetic notation.
• Basic understanding of ASR metrics like WER and CER.
• Quality assurance experience for AI models is a plus.

Responsibilities

• Evaluate speech recognition and voice synthesis models under varied conditions.
• Annotate and transcribe audio samples for training and evaluation.
• Collaborate with AI engineers to analyze failures and suggest data augmentations.
• Conduct comparative testing across models or vendors and document performance deltas.
• Maintain evaluation benchmarks and contribute to protocol improvements.
• Support multilingual testing including Indian languages and code-switching.

Skills

Speech transcription

Audio annotation

Phonetic transcription

Accent evaluation

WER/CER metrics

Quality assurance for AI models

Tools

Praat

Audacity

Microsoft Excel

Google Forms

Job description

About the Opportunity

A fast-scaling AI innovations firm in the Speech & Voice Technology sector, we build and validate next-gen voice AI systems that power intelligent assistants, call-center automation, and multilingual speech recognition for global enterprises. Our team ensures voice models understand accents, intonations, and edge-case utterances across Indian and global languages—delivering human-grade accuracy at scale for mission-critical applications.

Role & Responsibilities

• Evaluate speech recognition, speaker verification, and voice synthesis models using structured rubrics across noise conditions, accents, and domains.
• Annotate, transcribe, and flag audio samples for model training, focusing on phonetic accuracy, intent detection, and emotional tone.
• Collaborate with AI engineers to triage model failures, surface bias patterns, and recommend data augmentations for low-performing utterances.
• Perform comparative testing of voice AI outputs across vendors or model versions, documenting performance deltas in standardized dashboards.
• Maintain quality control benchmarks and contribute to continuous improvement of evaluation protocols for voice AI systems.
• Support internationalization efforts by testing multi-accent and code-switching capabilities in Indian and global language pairs.

Skills & Qualifications

Must-Have

• Speech transcription
• Audio annotation tools
• Phonetic transcription
• Accent evaluation
• Speech recognition metrics (WER, CER)
• Quality assurance for AI models
• Microsoft Excel
• Google Forms

Preferred

• Experience with Praat or Audacity
• Knowledge of IPA (International Phonetic Alphabet)
• Background in linguistics or phonetics

Benefits & Culture Highlights

• Work with cutting-edge voice AI models deployed across Fortune 500 call centers and consumer devices.
• On-site collaborative environment with weekly syncs, tech talks, and hands-on access to speech pipelines.
• Impact-driven role where your evaluations directly improve model accuracy for millions of users.