Mathew L.

Key Skills

Freelancer Overview

MATHEW LOPEZ Email: [email protected] | Authorized to Work in the United States | Available Immediately | English Proficiency: C2 (Fluent) PROFESSIONAL SUMMARY Detail-oriented AI Response Evaluator, Data Annotation Specialist, and Language Data Contributor with experience reviewing, labeling, validating, and transcribing text, image, and audio datasets used to improve AI systems. Skilled in speech data review, language analysis, AI evaluation, and quality assurance with a strong commitment to accuracy, consistency, and reliability. CORE SKILLS AI Response Evaluation, Data Annotation & Labeling, Dataset Validation, Quality Assurance, Audio Transcription, Orthographic Transcription, Speech Data Annotation, Audio Quality Review, Conversational Speech Analysis, Speaker Identification, Disfluency Detection, Linguistic Quality Assessment, Research, Fact-Checking, Critical Thinking, Microsoft Excel, Google Sheets, Google Workspace, Documentation & Reporting, Remote Collaboration. PROFESSIONAL EXPERIENCE AI Data Annotation & Quality Review – CloudFactory (Remote) | Jan 2025 – Jan 2026 (cid:127) Annotated and validated text, image, and audio datasets used to train AI models. (cid:127) Reviewed and labeled speech recordings and audio transcription data for accuracy and consistency. (cid:127) Processed and quality-checked 10,000+ data records. (cid:127) Reduced annotation errors by approximately 18%. (cid:127) Contributed to a 15% improvement in dataset accuracy and model reliabi