Martin Umana

Key Skills

Software

Scale AI

Appen

Lionbridge

Label Studio

Top Subject Matter

Speech Recognition

Action/Event Recognition

Computer Vision/Object Detection

Top Data Types

Image

Text

Video

Document

Audio

Top Task Types

Classification

Transcription

Data Collection

Bounding Box

Segmentation

Entity Ner Classification

Polygon

RLHF

Object Detection

Text Generation

Text Summarization

Evaluation Rating

Prompt Response Writing SFT

Freelancer Overview

English Audio Transcription Specialist. Core strengths include Appen, Atlas Capture, and RemoExperts. AI-training focus includes data types such as Audio, Video, and Image and labeling workflows including Transcription, Annotation, and Bounding Box.

Labeling Experience

Bounding Box Annotation Specialist

ImageBounding Box

On platforms such as Lionbridge and RemoExperts, I annotated images with bounding boxes for object localization tasks. My role involved identifying objects of interest in diverse image datasets and accurately drawing bounding boxes. This work improved the precision of computer vision and object detection models. • Labeled thousands of images for object detection • Maintained high inter-annotator agreement • Used proprietary and third-party annotation tools • Regularly met volume and quality targets

On platforms such as Lionbridge and RemoExperts, I annotated images with bounding boxes for object localization tasks. My role involved identifying objects of interest in diverse image datasets and accurately drawing bounding boxes. This work improved the precision of computer vision and object detection models. • Labeled thousands of images for object detection • Maintained high inter-annotator agreement • Used proprietary and third-party annotation tools • Regularly met volume and quality targets

2022 - Present

Video Annotation Specialist

Video

Using Atlas Capture, I conducted video annotation tasks to identify and tag relevant events or actions in footage. My attention to detail ensured precise frame labeling and comprehensive event coverage. These efforts supported the training and validation of video-based AI systems. • Provided high-quality video event annotations • Adhered to specific project labeling protocols • Collaborated in ongoing video dataset validation • Enhanced video AI model training datasets

Using Atlas Capture, I conducted video annotation tasks to identify and tag relevant events or actions in footage. My attention to detail ensured precise frame labeling and comprehensive event coverage. These efforts supported the training and validation of video-based AI systems. • Provided high-quality video event annotations • Adhered to specific project labeling protocols • Collaborated in ongoing video dataset validation • Enhanced video AI model training datasets

2022 - Present

Freelance AI Data Rater / Model Evaluator – English Transcription

AppenAudioTranscription

I provided English language transcription services for AI training and dataset development on the Appen platform. Tasks included converting audio to text accurately and following annotation guidelines closely. Quality assurance processes ensured high transcription accuracy. • Transcribed English audio clips into accurate text records. • Reviewed and corrected transcripts to meet project standards. • Handled confidential and sensitive content per protocol. • Collaborated remotely with other annotators.

I provided English language transcription services for AI training and dataset development on the Appen platform. Tasks included converting audio to text accurately and following annotation guidelines closely. Quality assurance processes ensured high transcription accuracy. • Transcribed English audio clips into accurate text records. • Reviewed and corrected transcripts to meet project standards. • Handled confidential and sensitive content per protocol. • Collaborated remotely with other annotators.

2022 - Present

Freelance AI Data Rater / Model Evaluator – Text Evaluation

Scale AIText

I evaluated AI-generated text responses to business and financial questions using structured scoring rubrics. Responsibilities included accuracy checks, content relevance, and identifying gaps in AI output. Structured workflows and platforms such as Scale Studio and Appen were utilized. • Scored AI text responses based on accuracy and completeness. • Provided feedback for model improvement. • Ensured guideline compliance in evaluation. • Analyzed chatbot output specificity and reasoning.

I evaluated AI-generated text responses to business and financial questions using structured scoring rubrics. Responsibilities included accuracy checks, content relevance, and identifying gaps in AI output. Structured workflows and platforms such as Scale Studio and Appen were utilized. • Scored AI text responses based on accuracy and completeness. • Provided feedback for model improvement. • Ensured guideline compliance in evaluation. • Analyzed chatbot output specificity and reasoning.

2022 - Present

Freelance AI Data Rater / Model Evaluator – Image Collection

LionbridgeImageData Collection

I participated in image collection projects on Lionbridge, supporting dataset expansion and diversity. Duties included uploading, organizing, and validating large volumes of images as required by project specifications. Attention to detail was maintained for data integrity. • Collected and uploaded images per outlined criteria. • Organized datasets for downstream annotation tasks. • Validated images for relevance and quality. • Ensured privacy and compliance for all data collected.

I participated in image collection projects on Lionbridge, supporting dataset expansion and diversity. Duties included uploading, organizing, and validating large volumes of images as required by project specifications. Attention to detail was maintained for data integrity. • Collected and uploaded images per outlined criteria. • Organized datasets for downstream annotation tasks. • Validated images for relevance and quality. • Ensured privacy and compliance for all data collected.

2021 - 2024

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Education

Work History