About the Role
We are looking for experienced annotators with deep cultural, linguistic, and audio catalog expertise to help improve a major music platform's personalized experiences across multiple languages and regions.
In this role, you will create high-quality ground truth and evaluate the quality of both training data and model-generated output for various features. Your insights will help shape how listeners around the world discover and enjoy music, podcasts, and audiobooks.
What You'll Do
- Evaluate agentic and personalized experiences and assess search relevance & recommendations
- Perform complex qualitative assessments to support emerging agentic and conversational listening experiences.
- Judge how well recommendations, responses, and UI elements reflect local culture, language norms, and audio habits.
- Review playlist and recommendation quality, including how well results match inferred user intent and preferences.
- Assess how realistically synthetic prompts/queries represent real user behavior and catalog usage in your region.
- Create detailed ground truth judgments for music, podcasts, and audiobooks.
- Validate and refine LLM-generated judgments to ensure they align with real-world user expectations and regional norms.
- Identify inconsistencies, edge cases, and nuanced failures in model output.
- Summarize insights & highlight risks to provide concise written and verbal summaries of your top findings, highlights, and concerns for each evaluation set.
- Carefully review and follow project-specific instructions before starting annotation work.
- Adapt quickly as project types rotate and priorities shift and deliver high-quality annotations within 1–2 week deadlines.
Requirements
- Native proficiency in Japanese with deep understanding of the regional culture associated with your language, including how people in your region actually use audio streaming services.
- Strong fluency in English (written and spoken) to communicate findings, questions, and insights with the internal team.
- Extensive, current knowledge of music, podcasts, and audiobooks relevant to your region such as their key artists, global trends, listening habits.
- Long-time, avid fan of music, with additional familiarity using streaming experiences for podcasts and audiobooks.
- Could be an avid listener, musician, or songwriter; formal industry experience is NOT required.
- 6 months of annotation or labeling experience, ideally in complex or subjective domains.
- Critical thinking and strong research skills to supplement your audio content knowledge.
-Proficient with Google Workspace, especially Google Sheets, for tracking annotations and evaluations with great accuracy.
- Open to learning and feedback with an ability to meet deadlines for 1–2 week annotation cycles.
Project Details
Contract Type: Freelance
Location: Japan (remote)
Start Date : 15th December 2025
Duration: 1 to 2 weeks
Schedule: Daily 1 hour; flexible based on client's needs
Note: Please do not use VPNs or IP-masking tools during the recruitment process — our security system requires accurate regional verification.
Why Join Welo Data?
Limitless Flexibility
Project-based opportunities that fit your availability. Choose when and how much you want to contribute—fully remote, with complete autonomy.
Limitless Growth
Optional access to AI and Large Language Model workshops designed specifically for professionals like you. No coding required—just your expertise.
Limitless Support
Be part of a global contributor community with responsive guidance and support.
Real Impact
Apply your expertise in the Legal field to influence the AI systems shaping the future of your industry—while collaborating with data professionals and expanding your skills.
How to Apply?
Apply now by answering a few quick questions to join our database and become part of our growing community.
About Welo Data
Welo Data, part of Welocalize, is a global AI data company with 500,000 contributors delivering high-quality, ethical data to train the world's most advanced AI systems. We're building smarter, more human AI with a diverse community in 100 countries.
At Welo Data, Limitless AI. Limitless You. isn't just a slogan—it's our promise. We build smarter AI through the power of human contribution, offering limitless opportunities for our global community to grow, contribute, and work on their terms.
-
Japan Welocalize ￥600,000 - ￥1,200,000 per year+Job summary+We are looking for experienced annotators with deep cultural linguistic audio catalog expertise to help improve personalized experiences across multiple languages regions.+ · +In this role you will create high-quality ground truth evaluate quality training data model ...
-
Tokyo, Japan WelocalizeWe are seeking Audio Evaluators to participate in an exciting project focused on evaluating audio clips in Japanese. · ...
-
Tokyo, Japan WelocalizeWe are seeking Audio Evaluators to participate in an exciting project focused on evaluating audio clips in Japanese. This role involves assessing and analyzing audio recordings to ensure alignment with project guidelines. · The tasks emphasize accent recognition, focusing on iden ...
-
Suginami Welo DataWe are seeking Audio Evaluators to participate in an exciting project focused on evaluating audio clips in Japanese. · ...
-
Tokyo ROYAL AGENT株式会社A startup focused on solving the data preparation challenge that many companies face in AI development. They provide a cloud-based platform for data collection and annotation enabling efficient preparation of high-quality datasets required for AI model development and operation. ...
-
Japan JobgetherThis position is posted by Jobgether on behalf of a partner company. We are currently looking for a Customer Success Manager - REMOTE. · ...
-
Tokyo パーソルテンプスタッフ株式会社 Global Job OfficeWe are seeking a Japanese-English speaking candidate for a global marketing role in the alcohol beverage industry. · Assist in developing marketing plans and annual budget. · Evaluate and analyze progress on initiatives to achieving growth and contribution objectives. · ...
-
Tokyo パーソルテンプスタッフ株式会社 Global Job OfficePERSOL TEMPSTAFF is seeking for a Japanese-English speaking candidate for a renown oversea alcohol beverage manufacturer. · ...
-
Tokyo EIRE SystemsEIRE Systems is looking for a bilingual AV & IT Support Specialist to join their on-site technology support team in Tokyo. · ...
-
AI Anime Researcher
1週間前
Chiyoda SpellbrushWe're looking for an experienced AI Researcher to join our team and help us push the boundaries of AI and anime. · Design large-scale diffusion models with a primary focus on images, secondary focus on other modalities like 3d, text, video and audio. · You'll design and develop l ...
-
Videographer – Tokyo
3週間前
Tokyo TwineAn opportunity is available for a skilled videographer to capture dynamic documentary-style, lifestyle, · and city B-roll footage in Tokyo and surrounding areas. · ...
-
Tokyo Bose Corporation ￥3,000,000 - ￥6,000,000 per yearWe invite you to join us in this transformation of creating an atmosphere where every candidate feels supported and empowered in the interviewing process. · ...
-
Tokyo Pixelogic Media Partners, LLC Full time￥900,000 - ￥1,200,000 per yearWe are seeking a Japanese Post Processing Language Specialist to help us build next-generation localization workflows and offer premium content localization services. · ...
-
Research Engineer
4週間前
Tokyo Google DeepMind $1,200,000 - $1,500,000 per yearWe are seeking a highly motivated and innovative Research Engineer to join our team in Tokyo,focused on building the state-of-the-art in multimodal companion agents.This role offers a unique opportunity to collaborate with a world-class,cross-functional team at Google DeepMind. · ...
-
Retail Operations
1ヶ月前
Tokyo Bose Corporation ￥2,000,000 - ￥2,800,000 per yearWe invite you to join us in this transformation. · Retail Experience plan at assigned resellers · Management and continuous improvement of all elements of in-store execution to achieve POS productivity targets: · Brand presentation & placement · Product, display & content health ...
-
Solution Architect
1ヶ月前
Tokyo KPIT+Job Summary · We are looking for a highly experienced Middleware/Platform Architect with Android automotive background who is passionate about next generation SDV, eCockpit and Infotainment systems. · +Technical deep dive on Requirements, Architecture and Design – in consultatio ...
-
Tokyo Ubique SystemsThe purpose of the role is to resolve technical issues and requests onsite that remote functions are unable to address. The role represents the Technology team in onsite incident problem management projects and software delivery. · ...
-
AI Expert
2ヶ月前
Japan Welocalize ￥80,000 - ￥120,000 per yearWe are seeking AI-savvy power users in Japan - individuals who regularly work with large language models (LLMs) and generative AI tools for coding, writing, creation, automation, or experimentation. · Participate in round-table style discussions about AI tools. · Share real examp ...
-
Tokyo TELUS Digital AI Data Solutions ￥2,500,000 - ￥5,000,000 per yearReady to say goodbye to the boring, traditional 9-5 routine and embrace a dynamic and exciting work environment that puts you in control? · ...
-
Japan WelocalizeWe are looking for a Movie and TV data/metadata Specialist to join our Japanese team. · You will be working with a leading consumer technology company as a contributor to the finished products released in the Japanese market and also across the globe. · You will evaluate the qual ...
-
Video Quality
1ヶ月前
Tokyo Welocalize Full time￥2,000,000 - ￥2,800,000 per yearWe're looking for individuals with strong technical video knowledge.We're looking for individuals with strong technical video knowledge. Ideal candidates have backgrounds within the industry, in such areas as TV studio work, encoding houses, wedding videography. · ...
