B

Bernard Muthami Syengo

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Nairobi County, Kenya

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work
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  • Mercor
    Data Annotator - LLM Trainer
    Mercor
    Jun 2025 - Jan 2026 (8 months)
    Marked and reviewed Al-generated dialogue, conversations, and character interactions to enhance natural flow, emotional realism, and player immersion. Humanized model responses by identifying robotic phrasing, unnatural tone, and inconsistent personality characteristics. Examined and refined dialogue, prompts, and responses used for training large language models in interactive and narrative settings. Compared model outputs against detailed evaluation rubrics focusing on coherence, character consistency, intent accuracy, and user experience quality. Marked hallucinations, logic errors, tone issues, and immersion-breaking replies that weaken narrative credibility.
  • RWS GROUP Moravia
    AI annotator
    RWS GROUP Moravia
    Feb 2025 - Dec 2025 (11 months)
  • freelance
    Software Engineer
    freelance
    Feb 2023 - Aug 2024 (1 year 7 months)
    Built fast backend tools using Modern C++ to handle heavy data loads. Cleaned up old code using Smart Pointers to stop memory leaks and crashes. Used Multithreading to help the system run multiple tasks at the exact same time.
  • RWS
    RWS TrainAI
    Outlier
    Multimodal Content Annotator & Quality Reviewer
    RWS, RWS TrainAI, Outlier
    Jan 2022 - Dec 2022 (1 year)
    Annotated text, audio, image, and video content used in multimodal Al systems. Feb 2022- Dec 2023 Reviewed conversational and narrative content for clarity, pacing, emotional tone, and contextual relevance. Supported mini-plots, scene descriptions, and interaction logic by validating consistency across datasets. Conducted quality assurance reviews to ensure annotations aligned with project standards and creative intent. Identified edge cases where Al responses failed to reflect human behavior, emotional nuance, or narrative continuity.