Available to hire
Hi, I’m Mary Alejandra Medrano. I’m a bilingual AI Trainer and freelance audio annotator with experience in data annotation, AI model training, and business management. I thrive in remote environments, delivering high-quality linguistic feedback, precise audio labeling, and collaborative model optimization in English and Spanish.
I’m committed to quality assurance, continuous learning, and cross-functional teamwork with international teams to ensure accurate, contextual AI outputs while maintaining a strong focus on adaptability and clear communication.
Experience Level
Language
Spanish; Castilian
Fluent
English
Fluent
Work Experience
AI Trainer at Outlier AI
January 1, 2024 - PresentTrained and evaluated large language models (LLMs) in English and Spanish. Created prompts, completed annotation tasks, and assessed AI responses for accuracy, fluency, and other relevant dimensions. Worked in collaborative remote teams to improve model performance and consistency.
Owner & Sales Manager at Footwear and Cosmetics Business
December 31, 2023 - September 4, 2025Managed daily operations including inventory control, financial oversight, and customer service. Developed and executed marketing strategies that increased revenue by 40% and improved customer retention. Promoted products through local channels and social media, steadily growing the client base.
Audio Annotator at TransPerfect
January 1, 2025 - PresentContributed to the development of AI models by performing high-quality audio data annotation in Latin American Spanish, following strict project guidelines. Analyzed and categorized speech characteristics, delivery patterns, and voice traits to ensure accuracy and consistency in model training datasets. Maintained a strong focus on quality assurance, applying feedback effectively to improve accuracy and meet project performance metrics.
AI Trainer at Outlier AI
January 1, 2024 - PresentTrained and evaluated large language models (LLMs) in both English and Spanish to improve fluency, accuracy, and contextual relevance. Created prompts, completed annotation tasks, and assessed AI responses against quality benchmarks. Collaborated with international teams to refine model outputs and ensure consistency across multilingual datasets.
Owner & Sales Manager at Footwear and Cosmetics Business
January 1, 2023 - October 9, 2025Managed daily operations including inventory control, financial oversight, and customer support. Designed and implemented marketing strategies that increased sales revenue by 40% within one year. Promoted products through local channels and social media, achieving steady customer growth and brand recognition.
Audio Annotator at TransPerfect
January 1, 2025 - PresentContributed to the development of AI models by performing high-quality audio data annotation in Latin American Spanish, following strict project guidelines. Analyzed and categorized speech characteristics, delivery patterns, and voice traits to ensure accuracy and consistency in model training datasets. Maintained a strong focus on quality assurance, applying feedback effectively to improve accuracy and meet project performance metrics.
AI Trainer at Outlier AI
January 1, 2024 - PresentTrained and evaluated large language models (LLMs) in both English and Spanish to improve fluency, accuracy, and contextual relevance. Created prompts, completed annotation tasks, and assessed AI responses against quality benchmarks. Collaborated with international teams to refine model outputs and ensure consistency across multilingual datasets.
Owner & Sales Manager at Footwear and Cosmetics Business
January 1, 2023 - October 18, 2025Managed daily operations including inventory control, financial oversight, and customer support. Designed and implemented marketing strategies that increased sales revenue by 40% within one year. Promoted products through local channels and social media, achieving steady customer growth and brand recognition.
Audio Annotator at TransPerfect
January 1, 2025 - PresentContributed to AI model development by performing high-quality audio data annotation in Latin American Spanish, following strict project guidelines. Analyzed and categorized speech characteristics, delivery patterns, and voice traits to ensure accuracy and consistency in model training datasets. Maintained a strong focus on quality assurance, applying feedback effectively to improve accuracy and meet project performance metrics.
AI Trainer at Outlier AI
January 1, 2024 - PresentTrained and evaluated large language models (LLMs) in English and Spanish to improve fluency, accuracy, and contextual relevance. Created prompts, completed annotation tasks, and assessed AI responses against quality benchmarks. Collaborated with international teams to refine model outputs and ensure consistency across multilingual datasets.
Owner & Sales Manager at Footwear and Cosmetics Business
January 1, 2023 - October 18, 2025Managed daily operations including inventory control, financial oversight, and customer support. Designed and implemented marketing strategies that increased sales revenue by 40% within one year. Promoted products through local channels and social media, achieving steady customer growth and brand recognition.
Education
Qualifications
English Studies Intermediate to Advanced Level
January 11, 2030 - September 4, 2025English Studies – Intermediate to Advanced Level (Formal instruction and self -directed learning)
January 11, 2030 - October 9, 2025English Studies – Intermediate to Advanced Level
January 11, 2030 - October 18, 2025English Studies – Intermediate to Advanced Level
January 11, 2030 - October 18, 2025Industry Experience
Retail, Software & Internet, Professional Services, Media & Entertainment, Education, Other
Experience Level
Hire a Marketing Strategist
We have the best marketing strategist experts on Twine. Hire a marketing strategist in Managua today.