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Treva Onyango Aoko

@trevaonyangoaoko

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AI Training and Data Annotation Specialist turning complex data into high-quality, model-ready labels.

Kenya

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What I'm looking for

I’m looking for AI and data-focused work where I can apply annotation, transcription, and evaluation skills with strong quality standards—while supporting operations and remote collaboration in an impactful organization.

I’m a detail-oriented AI Training and Data Annotation Specialist and virtual assistant based in Nairobi, Kenya, with experience across image segmentation, 2D/3D annotation, LiDAR labeling, audio transcription, and video narration. I’ve worked through Sama, Remotasks, and Pallon, consistently applying strict guidelines to evaluate prompt adherence, visual accuracy, and dataset quality.

I bring strong quality assurance habits: I analyze realism and composition, flag inconsistencies and rendering errors, and run consistency checks to reduce model training noise. I also support executive operations with calendar management, email gatekeeping, and organized digital workflows—so teams move faster with clear priorities and reliable outputs.

Experience

Work history, roles, and key accomplishments

Current

Data Analyst (Sewer Inspection)

Current

Pallon

Jan 2024 - Present (2 years 5 months)

Analyzed sewer inspection footage to label infrastructure defects and structural faults, including cracks, blockages, corrosion, infiltration, and pipe misalignment. Improved dataset reliability through standardized engineering guidelines, cross-checking, and QA flagging of low-confidence annotations.

Sewer Defect Labeling Structural Anomaly Classification Crack Detection Corrosion Infiltration Labeling Low Visibility QA

AI Trainer (Annotation)

Sama

Jan 2023 - Jan 2026 (3 years)

Performed image segmentation and object labeling for machine learning training while meeting production targets with high accuracy. Conducted video narration, summarization, and temporal-event transcription, and maintained dataset consistency through iterative QA and guideline updates.

Segmentation Bounding Boxes Dataset Consistency Checks

AI Associate (Audio & 3D)

Remotask

Jan 2022 - Jan 2023 (1 year)

Completed audio transcription with verbatim fidelity, including speaker separation and noise-handling, while meeting quality standards. Performed LiDAR and 3D point cloud annotation with accurate 2D–3D alignment, including 2D bounding boxes/polygons and 3D cuboid labeling with edge-case handling.

Audio Transcription Speaker Separation LiDAR Point Cloud Annotation 3D Alignment 2D Bounding Boxes 3D Cuboid Occlusion Edge Case Labeling

Generative AI Evaluator

IMerit

Jan 2025 - Present (1 year 5 months)

Evaluated AI-generated images against detailed text prompts, checking realism, composition, and prompt adherence while identifying generative artifacts and rendering defects. Applied QA guidelines to compare outputs and provided feedback to improve model performance and training outcomes.

AI Output Evaluation Prompt Adherence Checking Visual Quality Assurance Image Realism Assessment Comparative Reasoning Audio Transcription

Education

Degrees, certifications, and relevant coursework

ALX Software Engineering Programme

Bachelor's degree in Computer Science, Front-End Web Development

Completed the ALX Software Engineering Programme in Front-End Web Development (completion in March 2026). Reported a bachelor’s degree in computer science.