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Alejandra Jacqueline Martínez Sandoval

@alejandrajacquelinem

Linguistic Data Specialist across iMerit, OneForma and other AI platforms, evaluating model outputs and transcribing Mexican Spanish audio.

Mexico
Message

Across iMerit, OneForma, Centific, Mindrift and DataAnnotation, I transcribe and correct Mexican Spanish audio, annotate text, images and video, and evaluate AI model outputs against written rubrics. I write structured justifications in Spanish and English and flag ambiguous cases rather than guessing.

At Outlier (Scale AI), I annotated image, video and text data for AI training and compared model responses against criteria such as accuracy, relevance and instruction-following. I maintained consistency while working with frequently updated guidelines.

Before my freelance linguistic data work, I coordinated operations at XBorder Logistics, where I led four AI and system implementation initiatives and administered TMS configuration for 25 users. My Chemical Engineering background and quality roles at Ultrasist and Steeringmex also involved standards, documentation, testing and process quality.

Experience

Work history, roles, and key accomplishments

ID
Current

Freelance Linguistic Data Specialist

iMerit, OneForma, Centific, Mindrift, DataAnnotation

Apr 2025 - Present (1 year 6 months)

Performed audio transcription and transcript correction in Mexican Spanish, categorization and search relevance rating, model output evaluation, and image/video annotation for AI training platforms. Maintained quality scores within target and escalated ambiguous cases to reviewers.

OA

AI Data Annotator & Model Evaluator

Outlier (Scale AI)

Apr 2025 - Jun 2026 (1 year 2 months)

Annotated and labeled image, video and text data for AI training datasets, applying detailed project guidelines and error taxonomies. Evaluated and compared model outputs against rubric-based criteria, rating responses for accuracy, relevance, instruction-following and overall quality.

XC

Operations Coordinator

XBorder Logistics, S. de R.L. de C.V.

Mar 2022 - Jun 2026 (4 years 3 months)

Led 4 AI and system implementation initiatives end to end, including requirements definition, testing, launch, adoption and continuous improvement. Administered TMS configuration for 25 users and trained 12 users, driving change management across planning, dispatch and tracking teams.

Education

Degrees, certifications, and relevant coursework

Universidad Nacional Autónoma de México logoUM

Universidad Nacional Autónoma de México

B.Sc., Chemical Engineering

B.Sc. in Chemical Engineering from the Facultad de Estudios Superiores Zaragoza, UNAM, completed in 2017.

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