Kevin Sammy

Data Annotation & Quality Management leader with 9+ years at Samasource has one of the world's leading AI data annotation companies. Specialized in managing high-volume labeling pipelines, building QA frameworks, and delivering 98%+ SLA compliance for machine learning and AI training data projects. Proven track record coaching annotation teams, reducing defect rates, and driving quality improvements across text, product, and e-commerce annotation workflows.

Experienced in RLHF support workflows, inter-annotator agreement monitoring, content moderation QA, and annotation guideline development.

Data Annotator - iMerit Technology - Remote / Nairobi

(2026-01 - 2026-04)

• Executed multi-modal data annotation tasks for AI/ML training pipelines, including text classification, entity recognition, sentiment labeling, and response quality evaluation for large language model (LLM) development.
• Applied detailed annotation guidelines to label and validate structured and unstructured data across text, image, and document modalities using iMerit's Ango Hub annotation platform.
• Performed RLHF (Reinforcement Learning from Human Feedback) tasks including prompt-response rating, instruction-following evaluation, and chain-of-thought reasoning assessment to support generative AI model alignment.
• Maintained high accuracy and consistency standards across labeling workflows, contributing to inter-annotator agreement benchmarks and quality calibration sessions.
• Reviewed and ranked AI-generated outputs for helpfulness, harmlessness, and factual accuracy, directly supporting model fine-tuning cycles.
• Adhered to strict data security protocols (SOC 2 / ISO 27001-compliant environment), handling sensitive client data with full confidentiality and compliance.

Data Annotation Team Lead - Samasource Kenya - Nairobi

(2024-10 - 2026-02)

• Led and coached a team of 20+ annotation agents across multiple concurrent AI data projects, improving individual performance scores by 40% within 3 months.
• Maintained 98% SLA adherence on annotation deliverables for AI/ML clients, ensuring data quality standards were met for model training pipelines.
• Developed and delivered weekly quality reviews and calibration sessions, reducing escalation cases by 25% and improving inter-annotator consistency.
• Tracked annotation KPIs, analyzed output reports, and delivered weekly performance dashboards to senior leadership — directly influencing project resourcing and quality strategy.
• Drove annotation process improvements that cut turnaround time by 20% and improved client satisfaction scores.
• Partnered with Workforce and QA departments to forecast labeling capacity, align resources, and optimize headcount utilization by 10%.
• Recognized as Best Team Leader Performer (Q4 2024) for achieving highest output and quality metrics across three concurrent annotation projects.

Quality Analyst — Annotation & Labeling QA - Samasource Kenya - Nairobi

(2018-05 - 2024-10)

• Designed and implemented annotation quality frameworks and labeling guidelines that improved data accuracy rates by 18% across multiple AI projects.
• Conducted root cause analysis on annotation errors and systematic labeling inconsistencies, driving process changes that reduced critical defects by 30% within 2 months.
• Delivered targeted coaching sessions to annotation agents, cutting defect rates by 15% and improving guideline adherence across projects.
• Collaborated with quality managers to align annotation standards and rolled out QA process improvements adopted across 10 annotation teams.
• Authored detailed QA reports and weekly quality trend analyses for senior leadership, informing workforce planning and performance strategies.
• Conducted calibration sessions and audits to ensure consistent labeling outputs and maintain inter-annotator agreement thresholds on client projects.

Data Annotation Specialist - Samasource Kenya - Nairobi

(2016-09 - 2018-05)

• Executed high-volume data annotation and labeling tasks including product classification, category tagging, and data integrity validation for e-commerce AI datasets.
• Achieved 110–120% of daily annotation productivity targets, ranking in the top 10% of the team throughout tenure.
• Boosted category accuracy by 30% through systematic optimization of product classification and annotation workflows.
• Maintained strict data integrity standards while processing large-scale labeling workloads across multiple concurrent annotation projects.
• Collaborated with team leads to develop a peer review checklist for annotation tasks, reducing rework by 20%.

Distribution Assistant - Business Star Africa - Nairobi

(2016-07 - 2016-09)

• Managed inventory controls and order processing with 100% accuracy; supported warehouse reorganization that improved picking efficiency by 15%.

Field Sales Representative - Sunking Solar Company - Nairobi

(2013-03 - 2014-11)

• Achieved 120% of monthly sales targets across multiple regions; trained and supervised field sales agents, boosting team performance.

Diploma - Computer Science - Nairobi Aviation College (2014)

Kenya Certificate of Secondary Education (KCSE) - Olkejuado High School (2011)