Open to opportunities

Tanvir Mahmud

@tanvirmahmud2

Message

I build high-quality annotated datasets for multilingual AI and LLM systems.

Bangladesh

Message

What I'm looking for

I'm looking to contribute high-quality, culturally aware data annotation, transcription, QA, prompt engineering, and model evaluation work for AI systems, especially in multilingual NLP, speech emotion recognition, computer vision, and LLM development.

I'm contributing annotated data and model feedback for Sapien.io, Humanoid Network, DGrid.ai, AskJune.ai, EvoEvo.ai, and Silencio AI. My work supports computer vision, speech recognition, NLP, humanoid robotics, AI voice models, and decentralized AI inference.

At CrowdGen by Appen and Babel Audio, I transcribe and audit audio datasets, including Bengali emotion transcription, to preserve accuracy, emotional context, pronunciation, and cultural nuance. I've completed DataLens Africa Academy training in annotation, HITL QA, LLM fine-tuning, prompt engineering, RAG, model evaluation, safety testing, and bias assessment, and I was recognized by Sapien as a Veteran of the Guild among its Top 800 global image-tagging contributors.

Experience

Work history, roles, and key accomplishments

Current

Transcriptionist & Auditor

Current

CrowdGen by Appen

Jun 2026 - Present (2 months)

Serving as a Transcriptionist and Auditor for the Poliwag Audio Transcription project, ensuring high-accuracy conversion of audio content into text while
maintaining strict quality standards.
Perform detailed audio transcription and conduct second-pass audits to identify and correct errors, improving overall data quality and consistency.

AI Tools Transcription QA Audit

Current

Transcriptionist

Current

babel audio

Jun 2026 - Present (2 months)

Working on Bengali Emotion Transcription, accurately transcribing audio while identifying and labeling emotional tones, sentiment, and contextual
nuances in the Bengali language.
Deliver high-quality transcriptions and perform quality audits to ensure emotional context, pronunciation, and cultural accuracy are properly
captured.

Transcription Emotion Analysis Emotional Tone Annotation

Current

Builder Circle Member

Current

Sapien

Jan 2024 - Present (2 years 7 months)

Selected as a Sworn Member of the Builder Circle (Founding Cohort) and recognized as a Veteran of the Guild.
Ranked among the Top 800 contributors worldwide for image tagging.
Actively contributing high-quality multimodal annotated data to support Sapien’s AI model development.

Image Annotation Builder