Lisbon Masea

IT Support and AI Data Specialist with 6+ years of experience across technical support, system reliability, and AI data quality evaluation. Skilled in troubleshooting complex technical issues, maintaining stable system performance, and ensuring high-quality AI training outputs through structured evaluation processes. Proven ability to support fast-paced, high-security digital environments with strong attention to detail, problem-solving skills, and adherence to quality assurance standards.

Experienced in AI response evaluation, image quality rating, system support operations, and data curation, with a strong focus on accuracy, consistency, and performance optimization.

Image Quality Rater at Imerit (2026-03 – Present)

• Evaluated AI-generated images for accuracy against given text prompts
• Selected best and worst images from multiple AI-generated outputs
• Compared image sets and ranked results based on quality and relevance
• Assessed visual quality including clarity, composition, and aesthetics
• Identified AI artifacts such as distortions, unnatural shapes, and visual errors
• Flagged broken, unclear, or non-compliant images when necessary
• Followed structured annotation guidelines to ensure consistency and accuracy

AI Data Trainer and Quality Specialist at Sama (2019-01 – Present)

Supported end-to-end AI training and data quality workflows by preparing, labeling, and validating multimodal datasets for machine learning models

• Performed structured data annotation including entity labeling, document classification, and pattern identification across complex datasets
• Reviewed and validated outputs from machine learning models to ensure accuracy, consistency, and alignment with project guidelines
• Delivered high-precision annotation and transcription across text, image, audio, and video datasets, maintaining 98%+ accuracy
• Identified and labeled edge cases and anomalies to improve model robustness and predictive performance
• Conducted systematic quality assurance checks to ensure completeness, correctness, and reliability of annotated datasets
• Collaborated with engineering and data teams to resolve data issues and improve annotation workflows and platform performance
• Ensured strict compliance with data privacy, security standards, and project-specific evaluation frameworks
• Maintained organized records of annotated data and contributed to continuous improvement of annotation guidelines and processes

AI Response Evaluator at e2f (2024-06 – 2024-08)

• Evaluated AI-generated responses for factual accuracy, relevance, and alignment with given prompts and images
• Compared multiple responses (A/B testing) to determine the most accurate and helpful output
• Assessed responses for hallucinations, bias, incorrect reasoning, and inconsistencies
• Rated overall response quality based on clarity, usefulness, and logical explanation
• Selected preferred responses and provided structured justification for evaluation decisions
• Applied Harmless, Honest, Helpful (3H) guidelines to ensure safe and reliable AI outputs
• Followed detailed annotation and quality assurance guidelines to maintain consistency and accuracy

AI Response Evaluator at e2f (2024-06 – 2024-08)

• Maintained high accuracy and consistency across large-scale AI evaluation tasks
• Improved model response quality through precise feedback and error identification
• Demonstrated strong attention to detail in detecting subtle inconsistencies in AI outputs
• Adapted quickly to complex evaluation guidelines in a fast-paced remote environment

Independent Travel Manager at Dreamport (2025-06 – 2025-08)

• Managed and processed travel-related tasks and bookings within the platform
• Reviewed and verified travel information for accuracy and completeness
• Assisted in handling customer or system requests related to itineraries and updates
• Ensured data entry and records were correctly updated in the system
• Followed company procedures to maintain service quality and workflow consistency
• Communicated and coordinated with internal systems/tools to resolve task issues
• Maintained accuracy and attention to detail while handling operational tasks

IT Support Intern at Kenyatta National Hospital (2017-01 – 2017-03)

• Technical Support: Resolved complex hardware and software failures for a diverse user base, ensuring minimal downtime and maximum operational continuity for all departments
• Systems Maintenance: Performed comprehensive preventive maintenance on workstations and peripheral devices to extend equipment lifecycles and ensure hardware reliability
• Identity and Access Management: Managed secure user profiles and access permissions within HRMIS and HMIS platforms to maintain data integrity and institutional security
• Infrastructure and Networking: Supported the configuration and troubleshooting of local area network components, including IP phones, wireless access points, and structured cabling
• Asset Management and Documentation: Spearheaded the digital inventory tracking and asset tagging of all ICT hardware to ensure accountability during institutional system upgrades
• User Training and Enablement: Developed and facilitated technical training sessions for employees on software navigation and cybersecurity best practices to enhance digital literacy
• Security and Compliance: Administered endpoint security and antivirus deployments to protect information assets and ensure full compliance with data protection regulations
• Project and eHealth Implementation: Collaborated on the rollout of digital health systems and ICT projects, providing the technical framework needed for paperless operations

Diploma in Information Technology – Kisii University (2015 – 2017)