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Hi, I'm Esther NaisiMoi, a high-level AI training specialist and software engineer based in Nairobi, Kenya. I have 3+ years of experience in data-centric roles, with expertise in Reinforcement Learning from Human Feedback (RLHF) for code generation and STEM domains, plus unique skills in multimodal AI training (image/video/voice) and multilingual localization (English, Swahili, Maasai). I excel at evaluating LLM outputs for technical accuracy, safety, and cultural nuance, and I bring experience labeling at scale and building health-care data pipelines. I'm excited to contribute to high-complexity AI alignment projects.…Hi, I'm Esther NaisiMoi, a high-level AI training specialist and software engineer based in Nairobi, Kenya. I have 3+ years of experience in data-centric roles, with expertise in Reinforcement Learning from Human Feedback (RLHF) for code generation and STEM domains, plus unique skills in multimodal AI training (image/video/voice) and multilingual localization (English, Swahili, Maasai). I excel at evaluating LLM outputs for technical accuracy, safety, and cultural nuance, and I bring experience labeling at scale and building health-care data pipelines. I'm excited to contribute to high-complexity AI alignment projects.

Esther NaisiMoi

AI Engineer, Data Scientist, Full Stack Developer, +7

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Hi, I'm Esther NaisiMoi, a high-level AI training specialist and software engineer based in Nairobi, Kenya. I have 3+ years of experience in data-centric roles, with expertise in Reinforcement Learning from Human Feedback (RLHF) for code generation and STEM domains, plus unique skills in multimodal AI training (image/video/voice) and multilingual localization (English, Swahili, Maasai). I excel at evaluating LLM outputs for technical accuracy, safety, and cultural nuance, and I bring experience labeling at scale and building health-care data pipelines. I'm excited to contribute to high-complexity AI alignment projects.…Hi, I'm Esther NaisiMoi, a high-level AI training specialist and software engineer based in Nairobi, Kenya. I have 3+ years of experience in data-centric roles, with expertise in Reinforcement Learning from Human Feedback (RLHF) for code generation and STEM domains, plus unique skills in multimodal AI training (image/video/voice) and multilingual localization (English, Swahili, Maasai). I excel at evaluating LLM outputs for technical accuracy, safety, and cultural nuance, and I bring experience labeling at scale and building health-care data pipelines. I'm excited to contribute to high-complexity AI alignment projects.

Available to hire

Hi, I’m Esther NaisiMoi, a high-level AI training specialist and software engineer based in Nairobi, Kenya. I have 3+ years of experience in data-centric roles, with expertise in Reinforcement Learning from Human Feedback (RLHF) for code generation and STEM domains, plus unique skills in multimodal AI training (image/video/voice) and multilingual localization (English, Swahili, Maasai).

I excel at evaluating LLM outputs for technical accuracy, safety, and cultural nuance, and I bring experience labeling at scale and building health-care data pipelines. I’m excited to contribute to high-complexity AI alignment projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Swahili

Fluent

Spanish; Castilian

Beginner

Work Experience

Expert AI Training Contributor (Freelance/Contract) at Specialized Projects

January 1, 2024 - Present

Code Evaluation: Ranked and rewrote 500+ AI-generated Python and SQL scripts for complexity, security, and PEP8 compliance. Linguistic Architecture: Led a translation and Gold Standard dataset creation project bridging English to Swahili and Maasai. Prompt Engineering: Developed Red Teaming prompts to test model boundaries re: medical advice and sensitive cultural topics in the East African context.

Technical Lead at Green Kwetu Initiative

January 1, 2026 - Present

Data Governance for AI: Established metadata frameworks to ensure all organizational data is AI-ready, focusing on clean, labeled datasets for future predictive modeling. System Architecture: Managed high-uptime web infrastructure, ensuring zero-downtime releases.

Technical Product Operations Intern at ChildFund International

September 1, 2025 - November 1, 2025

Medical Data Training: Managed the DHIS 2 platform, architecting the Single Source of Truth used for large-scale performance modeling across 5 countries. Automated Quality Engineering: Built validation pipelines that ensured 99.9% data integrity — a critical skill for SFT data sets where data quality determines model success.

Data Labeling & QA Specialist at Sama

January 1, 2024 - December 31, 2024

Computer Vision: Performed high-density labeling (Video, Image, LiDAR) for Tier-1 autonomous vehicle and retail clients. Error Analysis: Conducted root-cause analysis on labeling discrepancies, improving the training feedback loop for client-side ML teams.