Data analyst (Contract)

Jan 2023 - Present

Evaluate LLM outputs for factual accuracy, coherence, and bias using structured RLHF-aligned rubrics; documented 200+ edge-case failures driving model quality improvements. Developed data annotation guidelines improving inter-annotator agreement by 18%; authored evaluation reports and presentations for technical and non-technical stakeholders.

Senior Data Engineer

Mar 2020 - Dec 2022

Led data annotation and labeling workflows for internal ML training datasets, establishing company-wide quality assurance standards for model evaluation. Defined evaluation metrics and benchmark test suites for predictive models; delivered executive presentations on data infrastructure performance and roadmap.

Software Engineer

Jun 2019 - Feb 2020

Developed backend data systems and contributed to ML proof-of-concept projects, establishing model testing protocols and evaluation frameworks for production deployment. Authored technical documentation and performance benchmarking reports across the full software development lifecycle.