For employers

Hire this AI Trainer

Sign in or create an account to invite AI Trainers to your job.

LoginCreate account
Invite to Job
R

Rolando Lopez

Mobile Developer & Annotator

USA flag
California, Usa
$20.00/hrExpertOther

Key Skills

Software

Other

Top Subject Matter

Speech Technology
Singing Voice Synthesis
Generative AI Art

Top Data Types

AudioAudio
ImageImage
TextText
DocumentDocument

Top Task Types

Transcription

Freelancer Overview

Mobile Developer & Annotator. Brings 9+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Internal, and Proprietary Tooling. Education includes Doctor of Philosophy, University of Texas at Dallas (2019) and Master of Science, University of Texas at Dallas (2016). AI-training focus includes data types such as Audio and Image and labeling workflows including Transcription, Evaluation, and Rating.

ExpertEnglishSpanishChinese Mandarin

Labeling Experience

AI Model Evaluator & Digital Art Critic

Image
Led the evaluation and critique of AI-generated digital art outputs, providing structured feedback and documentation of failure modes. Developed quality standards and methods for annotating standards violations in generative art models. Oversaw the end-to-end process of rating outputs for compliance and artistic value. • Output rating and structured QA for generative image models • Documented and annotated model failure cases and anomalies • Developed standards for digital art quality evaluation • Provided actionable feedback to AI research teams

Led the evaluation and critique of AI-generated digital art outputs, providing structured feedback and documentation of failure modes. Developed quality standards and methods for annotating standards violations in generative art models. Oversaw the end-to-end process of rating outputs for compliance and artistic value. • Output rating and structured QA for generative image models • Documented and annotated model failure cases and anomalies • Developed standards for digital art quality evaluation • Provided actionable feedback to AI research teams

2021 - Present

Mobile Developer & Annotator

OtherAudioTranscription
Contributed to the creation of an English singing voice synthesis corpus by performing detailed phoneme-level audio annotation. Labeled recordings with millisecond-precise pitch and musical note information, supporting dataset quality and structure. Collaborated with technical teams to optimize datasets for downstream speech technology applications. • Phoneme-level transcription and musical annotation for audio corpus • Detailed millisecond-precision labeling of pitch and note data • Optimization of annotated audio datasets for processing speed • Supported singing voice synthesis and speech technology developments

Contributed to the creation of an English singing voice synthesis corpus by performing detailed phoneme-level audio annotation. Labeled recordings with millisecond-precise pitch and musical note information, supporting dataset quality and structure. Collaborated with technical teams to optimize datasets for downstream speech technology applications. • Phoneme-level transcription and musical annotation for audio corpus • Detailed millisecond-precision labeling of pitch and note data • Optimization of annotated audio datasets for processing speed • Supported singing voice synthesis and speech technology developments

2018 - 2021

Education

U

University of Texas at Dallas

Doctor of Philosophy, Computer Science

Doctor of Philosophy
2016 - 2019
U

University of Texas at Dallas

Master of Science, Software Engineering

Master of Science
2014 - 2016

Work History

A

Apex Digital Solutions

Senior Software Engineer

California
2021 - Present
T

Texan Tech Innovators

Mobile Developer

Austin
2018 - 2021