I am Haruki Ueno, a Japanese native with a background in musicology and data analysis, currently focusing on high-quality voice data collection for AI training.
I am Haruki Ueno, a Japanese native with a background in musicology and data analysis, currently focusing on high-quality voice data collection for AI training. I approach each project with curiosity, precision, and collaboration in mind.
With over a decade in marketing and data analysis across startups, I have transitioned into supporting AI development as a freelance contractor, prioritizing technical precision, steady productivity, and clear communication.
This demo features a seamless transition between Standard Japanese and the Osaka dialect: Standard: Natural fitness inquiry. Upbeat AI: Professional response. Osaka Dialect: "Tipsy" character. Deep Osaka AI: Warm, empathetic "Good job." Studio-grade (-70dB) quality for AI & TTS. voiceover
Current role on Outlier's Voice Act Project as Voice Actor & Reviewer, delivering 400+ recordings with an average audio quality and naturalness of 4.8/5. Invited to Oracle's invitation-only top performer group within the first weeks of joining. Leveraged university-level training in acoustics and recording fundamentals to collaborate with QA leads (QM/QA) to propose core evaluation criteria, including acceptable noise-floor thresholds (dBFS) and RMS-based loudness checks, contributing to guideline updates and QC consistency.
Supporting global AI development firms through voice recording, multilingual annotation, and acoustic QA. Major Speech Data Project (2025): Completed 400+ Japanese voice recordings over six-month period. Consistently maintained high internal quality scores (average 4.8 /5.0). Promoted to a top-tier performance group within the project for consistent quality and adherence to complex guidelines. Acoustic QA & Review: Evaluated audio data for rubric alignment and clarity to ensure data set consistency.
Joined oVice, a virtual office platform, as the third core member during its early launch phase. Led both sales and marketing, building the foundation from scratch and driving rapid early-stage growth. At the time of joining, only a single demo page existed. Handled key tasks in parallel—webinars, customer support, CRM setup, ad operations, and UI/UX improvements. As the team grew, developed talk scripts, led training, and introduced data visualization tools to build a self-sustaining team. Key Contributions: - Built sales and marketing foundation and streamlined operations - Increased lead acquisition and brand awareness through ad optimization and site improvements - Improved UI/UX, onboarding, and customer engagement - Created sales materials, scripts, and implemented tools for scalable operations Achievements: - Reached ¥240M ARR and 30K DAU within one year of launch - Achieved world’s #2 market share and helped secure over ¥6B in total funding by 2022 - Expanded to 200+ employees and established the core foundation for growth Departed as the company transitioned to a larger, specialized organization. The intense, hands-on experience of building from zero during rapid growth remains one of my most valuable lessons.
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