Charltone Jakoyo

Strategic and results-driven Data Curation and AI Quality Specialist with 5+ years of experience architecting and optimizing quality frameworks for complex data pipelines. Expertise spans end-to-end data curation, Generative AI (LLM) fine-tuning and evaluation and high-volume English language audio model training for ASR systems. Proven leader focused on mentoring teams, automating workflows and delivering high-impact mission-critical data solutions.

Data Curation Specialist at Uber (2026-01 – Present)

Leading end-to-end data curation initiatives supporting analytics, machine learning and platform integrity across operational datasets.

• Source and integrate diverse data streams to build comprehensive, ready-to-use datasets
• Design and enforce quality frameworks to ensure data accuracy, integrity and reliability
• Manage annotation pipelines for text, image and audio data to support model training
• Document metadata and lineage to maintain clarity, compliance and dataset usability
• Audit datasets for bias and compliance to uphold ethical standards and regulatory requirements
• Collaborate with stakeholders to align data curation with project and business objectives
• Automate curation workflows to increase efficiency, scalability and process consistency

Quality Analyst at Sama (2021-06 – 2025-08)

Spearheaded quality strategy for advanced AI data projects, directly impacting client AI model development across Generative AI, LLM, image and audio domains.

• Directed quality evaluation and fine-tuning for LLM projects, assessing response quality, factuality and safety
• Served as primary English language audio model trainer, developing and auditing large-scale linguistic datasets for ASR systems
• Pioneered an AI-powered analytics tool that automated error detection and reduced critical data defects by 25%
• Implemented an AI-assisted scoring system that increased audit efficiency by 30% and improved team reliability
• Mentored 10+ associates, driving a 15% increase in team accuracy on complex annotation tasks
• Led the team to a consistent 99.25% quality score, securing a key three-year enterprise contract renewal

Customer Service Representative at Silver-Dean Group Company Limited (2021-02 – 2021-05)

Provided high-quality customer service and administrative support in a fast-paced call center environment.

• Resolved client inquiries and complaints efficiently while maintaining high service standards
• Trained and supervised new and temporary staff, contributing to team development and operational consistency

Quality Analyst at Skywave Management Services Limited (2019-09 – 2020-12)

Established and implemented quality standards and procedures for call center operations.

• Developed and optimized quality frameworks, SOPs and calibration processes to enhance service delivery
• Analyzed performance data to generate actionable weekly and monthly reports
• Increased customer satisfaction ratings and reduced complaint volumes by 17% through targeted quality interventions

Bachelor of Science in Actuarial Science – Dedan Kimathi University of Technology (2014 – 2019)