Joshua Dela Cruz

Key Skills

Software

Appen

Clickworker

Remotasks

Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

Audio

Computer Code Programming

Document

Image

Text

Video

Top Label Types

Action Recognition

Audio Recording

Bounding Box

Data Collection

Evaluation Rating

Object Detection

Polygon

Prompt Response Writing SFT

Question Answering

Text Summarization

Transcription

Translation Localization

Freelancer Overview

I am an experienced AI Prompt Engineer and Data Optimization Specialist with a strong background in data labeling, annotation, and AI training data preparation across various domains, including NLP, computer vision, and technical, medical, and general content. Since 2018, I have successfully managed end-to-end data curation, error resolution, and quality assurance for high-volume projects, leveraging tools such as Microsoft UHRS, Appen, TELUS International, Outlier, and Toloka. My expertise includes designing and refining prompts for advanced AI models, conducting meticulous data entry and verification, and ensuring data integrity for optimal model training. I am highly proficient in both English and Tagalog, enabling me to deliver accurate transcription and translation services while maintaining cultural context. I thrive in fast-paced, independent work environments and am committed to delivering reliable, high-quality datasets and AI outputs for my clients.

Labeling Experience

Tagalog & English Synthetic Speech Development

Internal Proprietary ToolingAudioText SummarizationEvaluation Rating

Serving as a core linguistic authority for the development and optimization of AI-driven voice synthesis (TTS) and speech recognition (ASR) models. Responsible for ensuring the naturalness, prosody, and phonetic accuracy of Tagalog and English AI voices across ByteDance’s global product ecosystem (e.g., TikTok, CapCut).

Serving as a core linguistic authority for the development and optimization of AI-driven voice synthesis (TTS) and speech recognition (ASR) models. Responsible for ensuring the naturalness, prosody, and phonetic accuracy of Tagalog and English AI voices across ByteDance’s global product ecosystem (e.g., TikTok, CapCut).

2024

CCTV Video Intelligence & JSON Annotation

AppenVideoQuestion AnsweringObject Detection

Led the Quality Assurance (QA) and refinement of AI-generated datasets for multi-view CCTV and Ego-view camera systems. The project focused on training Large Multimodal Models (LMMs) to accurately interpret human behavior, environmental context, and complex spatial relationships within video streams.

Led the Quality Assurance (QA) and refinement of AI-generated datasets for multi-view CCTV and Ego-view camera systems. The project focused on training Large Multimodal Models (LMMs) to accurately interpret human behavior, environmental context, and complex spatial relationships within video streams.

2023

AI Image Annotator

AppenImageBounding Box

Executed high-precision data annotation and labeling for a large-scale computer vision and generative AI project. The primary focus involved utilizing bounding box techniques to identify and localize specific objects within image datasets to improve model accuracy.

Executed high-precision data annotation and labeling for a large-scale computer vision and generative AI project. The primary focus involved utilizing bounding box techniques to identify and localize specific objects within image datasets to improve model accuracy.

2023 - 2025

Education

Work History