Manuel M.

Key Skills

Software

Remotasks

Scale AI

Other

Appen

Labelbox

CVAT

Toloka

Top Subject Matter

AI training datasets (text/NLP)

Computer vision training datasets

Speech and ASR training datasets

Top Data Types

Text

Image

Audio

Document

Top Task Types

Entity (NER) Classification

Object Detection

Transcription

Classification

Bounding Box

Prompt + Response Writing (SFT)

Red Teaming

Freelancer Overview

Freelance AI Data Annotator | Scale AI / Remotasks / Appen (Remote). Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Scale AI, Remotasks, and Appen. Education includes Bachelor of Business Information Technology, KCA University (2023). AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including Entity (NER) Classification, Bounding Box, and Transcription.

Labeling Experience

Content Reviewer & Data Quality Analyst | Freelance (Remote)

TolokaTextClassificationRed Teaming

Evaluated social media datasets by flagging content categories such as policy violations, hate speech, misinformation, and harmful content. Applied multi-class labeling schemas while documenting edge cases and guideline ambiguities. Produced clean structured annotation outputs in CSV and JSON formats for downstream ML integration. • Labeled policy violation and harmful-content categories. • Managed multi-class classification for 200+ items per day. • Documented labeling uncertainties and exceptions for guideline refinement. • Delivered structured CSV/JSON outputs and supported consistency checks.

2023 - Present

Freelance AI Data Annotator | Remotasks / Scale AI (Remote)

AppenAudioTranscription

Performed audio transcription and related audio labeling tasks in English and Swahili with attention to speaker turns and timestamps. Captured speech content and contextual cues to support accurate speech-related model training. Ensured fidelity of transcriptions through careful review against audio signals.• Produced high-fidelity transcripts for English and Swahili audio content.• Labeled speaker turns and timestamp alignment for structured playback and training.• Accounted for noise and audio artifacts during transcription capture.• Supported audio data collection workflows for downstream ASR systems.

2023 - Present

Freelance AI Data Annotator | Remotasks / Scale AI (Remote)

LabelboxImageObject DetectionBounding Box

Completed bounding box and polygon labeling on image and video datasets for object detection and instance segmentation. Followed detailed visual guidelines to ensure accurate localization of objects for computer vision training. Produced high-quality annotations suitable for e-commerce and autonomous driving use cases.• Labeled objects using bounding boxes and polygon instances for detection/segmentation.• Annotated image/video frames for e-commerce and autonomous driving datasets.• Ensured consistency with detection boundaries and segmentation precision.• Maintained quality scoring above platform benchmarks while meeting throughput goals.

2023 - Present

Freelance AI Data Annotator | Remotasks / Scale AI (Remote)

TolokaTextEntity (NER) ClassificationPrompt + Response Writing (SFT)

Freelance AI data annotator performing large-scale text labeling tasks including NER, sentiment labeling, and question-answer validation. Worked on data quality, accuracy tracking, and consistency to meet platform benchmarks for downstream ML training. Produced labeled outputs and validated task correctness according to project guidelines.• Labeled 500+ text tasks with 97%+ accuracy across projects.• Applied NER to identify entities and relevant spans within text.• Performed sentiment labeling and QA pair validation for conversational data.• Supported daily annotation targets while maintaining high quality scores.

2023 - Present

Education

Work History