OGANLA ISMAIL OLADIPUPO

AI Data Annotation Specialist | Full-Stack Developer

I help AI companies build better models through precise data annotation, document analysis, and quality-controlled labeling pipelines. Engineering background with hands-on experience in NLP, RLHF evaluation, structured data systems, and production software development.

ABOUT ME

I am a data annotation and AI training specialist with a B.Eng in Mechanical Engineering and a strong background in software development. I work at the intersection of human intelligence and machine learning, providing the high-quality labeled data that AI models depend on to perform accurately.

My engineering training gives me an edge in structured thinking, pattern recognition, and maintaining precision across large volumes of work. I have designed data systems that process thousands of records with strict validation, built quality control pipelines, and created annotation-ready datasets for over 3,000 items with trait classification, attribute tagging, and visual quality review.

As a full-stack developer, I understand how annotated data flows into ML pipelines. I don't just label data — I understand why the labels matter, how they affect model performance, and what quality standards are needed to produce reliable training sets.

I maintain accuracy standards above 95% across all workflows and have 3+ years of experience working independently in remote, distributed teams across time zones.

WHAT I DO

Document Annotation

Precise bounding box annotation on PDFs and complex documents. Entity classification, table extraction, key-value pair identification, reading order mapping, and header/caption labeling across multi-format layouts.

NLP and Text Labeling

Text classification, named entity recognition, sentiment analysis, and intent labeling. Fluent in English with native proficiency in Yoruba and Pidgin for multilingual AI training data.

RLHF and AI Evaluation

Human feedback for reinforcement learning. Response ranking, preference labeling, conversational AI evaluation, red teaming, and output quality assessment for large language models.

Code Evaluation

Reviewing and evaluating AI-generated code for correctness, efficiency, and style. Bug identification, complexity reasoning, and providing ground-truth solutions in Python, JavaScript, TypeScript, and Solidity.

Image and Data Annotation

Image classification, object detection labeling, attribute tagging, and visual quality review. Experience annotating thousands of items with structured metadata and consistency checks.

Quality Control and Pipeline Design

Building QC workflows with gold standard questions, inter-annotator agreement tracking, consensus labeling, and automated accuracy monitoring. I deliver clean data, not just labeled data.

EXPERIENCE

AI Data Annotation and Training

Freelance
2024 - Present
  • Designed structured data systems processing thousands of records with strict schema validation and accuracy requirements
  • Built automated quality control pipelines for data integrity checks across large datasets
  • Created annotation-ready datasets with structured labeling for 3,000+ items including trait classification, attribute tagging, and visual quality review
  • Parsed and structured complex document formats including technical specifications, API documentation, and contract ABIs
  • Maintained accuracy standards above 95% across all data processing workflows

Full-Stack Developer

Independent / Contract
2023 - Present
  • Built production applications with complex data pipelines, including marketplace platforms processing structured listings with multi-field classification
  • Developed automated indexing systems that parse, classify, and label on-chain data in real time
  • Managed PostgreSQL databases with structured schemas across multiple production environments
  • Deployed multi-service cloud architectures handling thousands of daily transactions
  • Created smart contracts and blockchain systems requiring precise data validation and structured output

Quality Assurance and Operations Specialist

Gatsby Tools
2022 - 2023
  • Processed 50-60 daily tickets with under 2-minute average response time while maintaining consistent quality standards
  • Created standardized documentation templates and response frameworks used across the team
  • Performed pattern recognition and anomaly detection for security monitoring
  • Built macros and automation workflows to improve operational efficiency

Data Operations and Management

Web3 Projects
2024 - 2025
  • Managed large-scale data collection, verification, and deduplication across multiple submission formats
  • Created and maintained structured databases for records and eligibility criteria
  • Performed data quality checks with strict validation rules during high-volume operations

TECHNICAL SKILLS

ANNOTATION AND DATA

Document Layout Analysis
Bounding Box Annotation
Entity Classification
Text Extraction
Key-Value Identification
Reading Order Mapping
PDF Structure Analysis
NLP Data Labeling
RLHF Evaluation
Image Annotation
Quality Assurance

PROGRAMMING

Python
JavaScript
TypeScript
Solidity
SQL
Bash

TOOLS AND PLATFORMS

PostgreSQL
REST APIs
Git / GitHub
Linux
Railway
Label Studio
CVAT
Labelbox

LANGUAGES

English (Fluent)
Yoruba (Native)
Nigerian Pidgin (Native)

WHY WORK WITH ME

Engineering Precision

B.Eng in Mechanical Engineering combined with full-stack development experience. I approach annotation with the same precision I bring to writing production code — systematic, accurate, and consistent at scale.

I Understand ML Pipelines

I don't just label data. As a developer who builds systems that consume structured data, I understand how annotation quality directly impacts model performance. Every label I apply is informed by that context.

Proven at Volume

Track record processing 50-60 daily tasks with consistent quality, creating 3,000+ annotated items, and managing databases with thousands of structured records. I maintain accuracy above 95% regardless of volume.

Self-Directed and Reliable

3+ years working independently in remote, async teams across time zones. I follow complex guidelines precisely, flag edge cases proactively, and deliver on time without supervision.

Multilingual Advantage

Fluent English with native Yoruba and Nigerian Pidgin. Valuable for multilingual AI training, African language NLP projects, and cross-cultural content evaluation.

Flexible and Available

Available full-time or part-time with flexible hours and immediate start. Equipped with personal hardware, stable internet, and accounts on Payoneer, PayPal, and Wise for seamless payments.

EDUCATION

B.Eng Mechanical Engineering

Engineering degree providing strong foundations in analytical thinking, mathematical modeling, structured problem solving, and technical documentation. These skills translate directly into high-accuracy data annotation, complex document analysis, and systematic quality control.

GET IN TOUCH

Looking for a reliable annotation specialist or AI training contributor? I am available for projects of any size — from small pilot batches to ongoing annotation work.

oganlaismail169@gmail.com github.com/ismail-169