For employers

Hire this AI Trainer

Sign in or create an account to invite AI Trainers to your job.

Invite to Job
Olivio Lengo

Olivio Lengo

Data Labeler / Annotation Specialist

ANGOLA flag
Luanda, Angola
$8.55/hrExpertLabelbox

Key Skills

Software

LabelboxLabelbox

Top Subject Matter

Machine Learning Data Preparation
Legal Services & Contract Review
Regulatory Compliance & Risk Analysis

Top Data Types

ImageImage
TextText
DocumentDocument

Top Task Types

Bounding Box

Freelancer Overview

Data Labeler / Annotation Specialist. Brings 3+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Labelbox. Education includes Technical Certification, University Dr António Agostinho Neto. AI-training focus includes data types such as Image and labeling workflows including Bounding Box.

ExpertEnglishPortuguese

Labeling Experience

Labelbox

Data Labeler / Annotation Specialist

LabelboxImageBounding Box
As a Data Labeler and Annotation Specialist at Paul Tec, I provided high-precision image annotation and text classification for machine learning models. I maintained a 98%+ accuracy rate and refined labeling guidelines in collaboration with team leads. My work involved consistent quality control, gold standard testing, and meeting daily processing targets. • Responsible for accurate bounding box and polygon image annotation • Performed Named Entity Recognition and Sentiment Analysis on text datasets • Utilized Labelbox, CVAT, LabelImg, and Amazon SageMaker for annotation tasks • Ensured data labeling quality and consistency for AI training projects

As a Data Labeler and Annotation Specialist at Paul Tec, I provided high-precision image annotation and text classification for machine learning models. I maintained a 98%+ accuracy rate and refined labeling guidelines in collaboration with team leads. My work involved consistent quality control, gold standard testing, and meeting daily processing targets. • Responsible for accurate bounding box and polygon image annotation • Performed Named Entity Recognition and Sentiment Analysis on text datasets • Utilized Labelbox, CVAT, LabelImg, and Amazon SageMaker for annotation tasks • Ensured data labeling quality and consistency for AI training projects

2022 - Present

Education

U

University Dr António Agostinho Neto

Technical Certification, Information Technology

Technical Certification
Not specified

Work History

N

N/A

Technical Support / Data Analyst

Luanda
2018 - 2020