I am an analytical and detail-oriented AI data specialist with hands-on experience evaluating AI-generated content, developing rubrics, and managing data annotation projects for language models and machine learning systems. I have collaborated across platforms such as Mercor Intelligence, RWS, TELUS Digital, and Data Annotation Tech to deliver precise, rubric-driven data that improves model performance, factual accuracy, and domain relevance. I am passionate about building reliable, fair AI through rigorous human-in-the-loop processes and ethical data standards. In cross-functional settings, I design and refine guidelines, monitor quality metrics, and implement improvements that drive scalable QA and data integrity. I thrive on turning complex requirements into structured evaluation and annotation workflows that empower teams to train better AI systems.

Yvonne Wanjiru

I am an analytical and detail-oriented AI data specialist with hands-on experience evaluating AI-generated content, developing rubrics, and managing data annotation projects for language models and machine learning systems. I have collaborated across platforms such as Mercor Intelligence, RWS, TELUS Digital, and Data Annotation Tech to deliver precise, rubric-driven data that improves model performance, factual accuracy, and domain relevance. I am passionate about building reliable, fair AI through rigorous human-in-the-loop processes and ethical data standards. In cross-functional settings, I design and refine guidelines, monitor quality metrics, and implement improvements that drive scalable QA and data integrity. I thrive on turning complex requirements into structured evaluation and annotation workflows that empower teams to train better AI systems.

Available to hire

I am an analytical and detail-oriented AI data specialist with hands-on experience evaluating AI-generated content, developing rubrics, and managing data annotation projects for language models and machine learning systems. I have collaborated across platforms such as Mercor Intelligence, RWS, TELUS Digital, and Data Annotation Tech to deliver precise, rubric-driven data that improves model performance, factual accuracy, and domain relevance. I am passionate about building reliable, fair AI through rigorous human-in-the-loop processes and ethical data standards.

In cross-functional settings, I design and refine guidelines, monitor quality metrics, and implement improvements that drive scalable QA and data integrity. I thrive on turning complex requirements into structured evaluation and annotation workflows that empower teams to train better AI systems.

See more

Experience Level

Intermediate
Intermediate
Intermediate

Work Experience

Rubric Expert at Mercor Intelligence
November 1, 2025 - November 1, 2025
Applied detailed evaluation rubrics to assess AI-generated responses across diverse domains, analyzed outputs for factual correctness and domain relevance, and led calibration sessions to improve inter-rater consistency. Developed rubric frameworks to standardize evaluation quality and collaborated with QA teams to identify trends and optimize scoring logic.
General Data Annotation Expert at Mercor Intelligence
August 1, 2025 - August 1, 2025
Synthesized information from large volumes of structured and unstructured data; annotated and categorized text, images, and other datasets per detailed project guidelines; applied predefined rubrics and taxonomies to ensure consistency; flagged inconsistencies and labeling errors; collaborated with cross-functional teams to validate data integrity and monitored project metrics for guideline enhancements.
Search Quality Rater at RWS Group
February 1, 2025 - February 1, 2025
Evaluated search engine results based on user intent, usefulness, and content reliability across web, image, and local queries; identified issues in ranking and relevance and suggested improvements for algorithm updates; provided cultural and linguistic insights to improve region-specific accuracy and supported bias-free, user-centric search experiences.
Data Annotator at Data Annotation Tech
July 1, 2024 - July 1, 2024
Annotated data for natural language processing and computer vision projects; labeled sentiment, entities, and intents across multilingual datasets; ensured quality through systematic reviews and peer feedback; contributed to refining annotation guidelines for ambiguous data scenarios and managed large-scale labeling under tight timelines.
AI Data Specialist at TELUS Digital
December 1, 2023 - December 1, 2023
Prepared and analyzed datasets to support NLP and machine learning projects; evaluated AI-generated responses for tone, accuracy, and factual correctness; developed and tested data annotation protocols; collaborated with linguists and engineers to optimize data input formats and conducted audits to verify consistency across multi-annotator datasets.
Business Transcriptionist at Taurho Transcribes
December 1, 2022 - December 1, 2022
Transcribed business, legal, and academic recordings with accuracy and consistency; applied timestamps and formatting to meet client requirements; achieved transcription accuracy above 99% through multi-pass quality control and delivered within strict timelines while maintaining confidentiality.
Captioner at REV.com
May 1, 2021 - May 1, 2021
Created and synchronized captions for diverse video and broadcast media; ensured linguistic accuracy and timing alignment with audiovisual content; adhered to accessibility and captioning standards and contributed to tool improvements while handling multilingual projects with cultural and contextual awareness.

Education

Bachelor of Science in Information Technology (Data Analytics Specialization) at Southern New Hampshire University (SNHU)
January 11, 2030 - November 6, 2025
Artificial Intelligence Foundations (Short Course) at Stanford University via Coursera
January 11, 2030 - November 6, 2025

Qualifications

Artificial Intelligence Foundations
January 11, 2030 - November 6, 2025
Professional training: Supervised Learning, Model Evaluation & Ethical AI Development
January 11, 2030 - November 6, 2025

Industry Experience

Media & Entertainment, Software & Internet, Professional Services, Education, Other