Olalekan O.

Key Skills

Software

Other

Appen

Clickworker

Data Annotation Tech

Mindrift

Mercor

Micro1

Toloka

Top Subject Matter

LLM evaluation for agentic RAG and fintech content (Responsible AI)

Data analytics for LLM evaluation harness design and RAG dataset preparation

Legal Services & Contract Review

Top Data Types

Text

Document

Image

Top Task Types

Prompt + Response Writing (SFT)

Data Collection

Evaluation/Rating

Text Summarization

Text Generation

Computer Programming/Coding

Freelancer Overview

AI Prompt Engineering Consultant (Prompt + evaluation/quality labeling for GenAI outputs). Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Certificate of Completion, ALX (Powered by ExploreAI Academy) (2024) and National Diploma, Lagos State Polytechnic (2015). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Labeling Experience

AI Prompt Engineering Consultant (Prompt + evaluation/quality labeling for GenAI outputs)

OtherText

Designed and operationalised structured prompting and self-critique workflows to evaluate and improve LLM outputs in production GenAI systems. Used prompt regression testing and evaluation harnesses to maintain quality consistency across multiple frontier and open-weight models. Applied constraints and reasoning-chain prompting techniques to reduce hallucinations and improve factuality for fintech content generation. • Built LLMOps evaluation harnesses using self-reflection critique loops and prompt regression testing • Benchmarked model latency, cost, and accuracy to select optimal models per task • Reduced hallucination rates by ~40% and revision cycles by ~60% through evaluation-driven iteration • Ensured responsible, safety-aware governance in evaluation and prompt design

2024 - Present

ALX Data Analytics Programme (LLM evaluation & RAG dataset preparation training)

OtherText

Completed a structured data analytics training program that was explicitly applied to LLM evaluation harness design and RAG dataset preparation. Focused on building structured data pipelines and preparing datasets used for retrieval and evaluation workflows. Translated foundational analytics methods into practical LLM evaluation and dataset preparation tasks. • Trained in structured data pipeline construction • Applied analytics foundation to LLM evaluation harness design • Prepared RAG datasets for downstream retrieval and evaluation • Completed a 6-month program ending with a certificate of completion

2024 - 2024

Education

Work History