Tosin A.

I help AI and data teams turn messy, large-scale data into clean, model-ready datasets. Then I build the LLM-powered workflows that get there fast, without letting errors creep back in. At an enterprise risk-intelligence firm, I built a prompt system that cut a 4-week data delivery down to under one week. That's roughly a 300% productivity gain, and senior leadership credited it publicly. Speed like that only counts if the quality holds, so that's the part I guard hardest. For 5+ years I've run data quality and operations for AI companies in the US and UK, working across datasets that push toward a million rows in Databricks, Snowflake, SQL, and Excel/Power Query. I've worked the full data lifecycle: annotation, entity resolution, deduplication, enrichment, and LLM-assisted quality control. What I do for clients 🔹 AI Data Quality & QA: I find and fix the inconsistencies, validate accuracy, and build QA frameworks that make a dataset genuinely production-ready. I've held 98–99% quality scores across roles. 🔹 LLM-Powered Data Workflows: I design prompts (few-shot, role-based, contextual) for classification, enrichment, relevance scoring, and quality control, with human review built in so hallucinations never reach your data. 🔹 Data Annotation & Labeling: Text, image, keypoint, and audio annotation for ML training. I work in Labelbox, Dataloop, or your own internal tooling, and I get up to speed fast. 🔹 Data Research & Enrichment: I collect, verify, and structure information from multiple sources to close gaps and improve dataset completeness and reliability. Why clients keep me long-term One of my contracts has run for 6,000+ hours without a break. The reason is plain: I'm reliable, I communicate straight, and I treat data accuracy as something real decisions ride on. Clients don't keep someone around that long unless the work earns it. So whether you need someone who understands the whole AI data pipeline or someone who'll check every row before it ships, I can help you deliver data your models can rely on. 📩 Send me a message let's do great work together.