Mac J.

Key Skills

Software

Appen

Top Subject Matter

AI data annotation quality assurance and moderation (platform tasks)

AI annotation operations

quality assurance

Top Data Types

Text

Image

Document

Top Task Types

Classification

Freelancer Overview

Team Leader, Appen Services Philippines / APPEN China. Brings 15+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen, N, and A. Education includes Applied Computer Technician, Imus Computer College (2006) and Bachelor of Science, San Sebastian College - Recoletos Cavite (2003). AI-training focus includes data types such as Text and Image and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

Team Leader, Appen Services Philippines / APPEN China

AppenText

Served as a team leader responsible for monitoring and improving the quality of tasks produced by moderators. Ensured compliance with the 4149 /4018 rule clarification and reinforced guidelines by reviewing errors, KPIs, and SLOB items. Coordinated with Quality Assurance to validate outputs and communicated issues to moderators with corrective instructions. • Reviewed team errors, KPIs, and accuracy guidance • Conducted floorwalks and monitored tasks to prevent recurrence • Managed moderators’ task handling across channels and follow-ups • Prepared team sheets, seat plans, and handled moderator disputes

2025 - Present

Pilot Project Specialist, Secure Delivery & Shared Services (Appen)

AppenImage

Worked as a Pilot Project Specialist overseeing task quality, calibration updates, and delivery timelines for client-launched work. Contributed directly to project tasks including image annotation while ensuring outputs met required quality standards. Developed and deployed training and learning materials, including guidelines tailored for deaf employees, and supported ongoing training and mentoring of Appen staff. • Conducted calibrations and tracked project workers’ time per task • Ensured quality of every task launched by the client • Led/support project-specific training and mentoring initiatives • Monitored feedback and updated training materials to improve performance

2021 - 2025

Data Processing Associate, Production

ImageClassification

Completed production data labeling work and maintained consistent output quality. Exceeded daily quotas and received performance recognition for annotation accuracy and attendance. Worked across different projects with varying task classifications as part of the production workflow. • Performed image annotation tasks within required quality standards • Exceeded assigned daily quota requirements • Received Best Image Annotator awards for consecutive months • Maintained Perfect Attendance and performed across multiple task types

2019 - 2021

Education

Work History