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Annotator
@j_mwanza
AI Training Specialist
Kenia
Inglés, Suajili
Sobre mí
I am a detail-oriented and reliable AI Training Specialist with strong skills in data annotation, prompt evaluation, and content review. I have experience working with large datasets and delivering high-quality results within deadlines. I am proficient in English communication and quality assurance for AI projects.
Habilidades
Annotator
desconectado •
Tiempo medio de respuesta: 1 hora
Revisa mis servicios
Etiquetado y anotación de datos
I will do handshake, outlier, mercor ai training
Etiquetado y anotación de datos
I will do handshake, outlier and mercor ai training
Porfolio
Experiencia laboral
Image annotator
Upwork • Freelance
May 2026 - Jul 2026 • 2 mos
I completed video annotation and action-captioning tasks for a confidential AI-training project involving short real-world activity videos. My role was to review each video, write a concise high-level summary, divide the footage into accurate action segments, and produce detailed, time-aligned captions in clear, simple present tense. A key challenge was ensuring complete coverage without gaps or overlaps while distinguishing similar objects, identifying the active hand, and avoiding assumptions about intent. I addressed this by reviewing videos at multiple speeds, fine-tuning segment boundaries frame by frame, verifying AI-generated caption suggestions against visible actions, and correcting inaccurate details. I also applied idle and invalid-action labels appropriately, reused consistent captions for repeated actions, and performed a final quality check on every task. This work strengthened my skills in video annotation, temporal segmentation, action captioning, AI-assisted review, guideline compliance, and dataset quality assurance.
