Mr Jeff Maina

    Freelancer · Nairobi, Kenya

    I am a Data Systems Developer and AI Specialist with a background in building robust analytical frameworks and optimizing data pipelines. I bridge the gap between complex system architecture and high-precision AI training. I specialize in refining Large Language Models (LLMs) through expert RLHF (Reinforcement Learning from Human Feedback), meticulous fact-checking, and technical prompt engineering.

    Skills

    • Virtual Assistant
    • Data Entry & Analysis
    • File Conversion (PDF ⇄ Word, Excel, PowerPoint)
    • Google Workspace (Docs, Sheets, Slides)
    • MS Office Expert (Word, Excel, PowerPoint)
    • General Assistant Support
    • Document Management/Version Control
    • Website Content Writing
    • Website Development
    • Mobile App Support
    • System Integration
    • Frontend Development (e.g., React, Angular, Vue.js)
    • Backend Development (e.g., Python, Node.js, Ruby on Rails)
    • Point-of-Sale (POS) System Integration
    • Payment Gateway Integration