About JAPAN AI
JAPAN AI, Inc. was established in April 2023 as a group company of Geniee, Inc., a publicly listed company, with the aim of dramatically enhancing the potential of working people through AI technology. We leverage cutting-edge AI technology to drive research and development both domestically and internationally.
We focus particularly on the development of AI agents, providing innovative products and solutions that utilize large language models (LLM). This enables us to improve productivity and operational efficiency across various industries.
JAPAN AI leverages the advantages of being a startup, allowing for flexible and rapid decision-making, and quickly adopting the latest technologies to provide optimal solutions for our clients. Additionally, our diverse team with an international perspective enhances our competitiveness in the global market.
We aim to create new value and contribute to the progress of society as a whole through the transformative power of AI. Let's lead innovation through AI and create a future where technology enables people to achieve more.
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Why We’re Hiring
With the rapid proliferation of AI technologies, demand for voice solutions utilizing our AI product "JAPAN AI Speech" is surging. In particular, we are seeing increased projects for designing and developing voice AI solutions tailored to individual customer requirements, such as call center efficiency improvements, sales support, and voice dialogue systems. Strengthening our engineering team with expertise in voice technology and backend development has become an urgent priority.
Role Summary
You will join the Solution Architect team as a Speech Product specialist. You will lead backend development for custom solutions that solve customer business challenges using JAPAN AI Speech product and voice AI technologies. We expect you to handle the entire process from system design and implementation based on customer requirements to integration with existing systems and operational maintenance.
Why You’ll Love This Role
- Cutting-edge voice AI technology challenges:
- Work on next-generation voice dialogue systems combining ASR/TTS/LLM technologies
- Real-time processing expertise:
- Build highly marketable expertise through designing and operating low-latency voice streaming infrastructure using WebRTC/Twilio
- Frontline of customer problem-solving:
- Engage directly with customers across diverse industries and experience the impact of solving their challenges with technology
- Socially impactful product development:
- Work on high-impact projects directly contributing to corporate productivity improvements, such as call center efficiency and sales support
- Collaboration with diverse talent:
- Grow in a stimulating environment working alongside talented members from diverse backgrounds including AI engineers, SREs, PdMs, Sales, and CS
- Balance of personal and organizational growth:
- Thrive in a dynamic field that balances individual growth with organizational development while adapting flexibly to rapid change
Responsibilities
- Voice AI Product Development
- Design and develop custom solutions for customers utilizing JAPAN AI Speech product
- Backend implementation of real-time voice processing systems (ASR/TTS/dialogue)
- Build low-latency voice streaming infrastructure using WebRTC / Twilio / SIP
- Implement voice dialogue systems utilizing large language models (LLMs)
- Build voice data collection, preprocessing, and metadata management pipelines
- System Integration & API Connectivity
- Design and develop API integrations with existing systems (CRM/CTI/business systems)
- Design distributed systems using microservices architecture
- Design and implement REST/gRPC/GraphQL APIs
- Implement webhook design and event-driven architecture
- Infrastructure & Operations
- Containerization and Kubernetes operations on GCP
- Database design and query optimization (Postgres/Redis/Elasticsearch, etc.)
- Design and operate streaming infrastructure (Kafka / Pub/Sub, etc.) and batch ETL
- Build and improve CI/CD pipelines (GitHub Actions / ArgoCD, etc.)
- Build monitoring and observability systems (Prometheus/Grafana/ELK/Jaeger)
- Machine Learning & AI Integration
- Integrate and deploy speech recognition and speech synthesis models to production environments
- Optimize inference API performance and reduce latency (Triton / TorchServe / ONNX, etc.)
- Build and operate MLOps pipelines
- Customer Engagement & Project Management
- Requirements definition, technical explanations, and contract development with customers
- PoC design, implementation, and evaluation
- Technical leadership and project management
- Maintenance and operational support for developed solutions
- Implementation and operation based on security requirements (voice data encryption, masking, retention policies)
Team Structure
Approximately 70 members in the development organization, divided into:
- Client Solution Development
- In-house AI SaaS Development
- Common platform development (Infrastructure / Data / DX / AI R&D)
This position will be assigned to the Client Solutions Development group (Speech team).
Required Qualifications
- Bachelor's degree in Computer Science, Software Engineering, Artificial Intelligence, Machine Learning, Mathematics, Physics, or related fields, or equivalent practical experience
- 3+ years of application development experience using Python
- Experience with requirements definition, technical explanations, and contract development with customers
- Practical experience with real-time communication (WebRTC / WebSocket / gRPC, etc.) or streaming processing (Kafka / Pub/Sub, etc.)
- 3+ years of experience with cloud services (GCP preferred, AWS/Azure acceptable) and container technologies (Docker, Kubernetes)
- Experience designing and operating RDB/NoSQL (Postgres, Redis, etc.) and object storage (GCS/S3, etc.)
- Experience working at startups or growth-stage companies, or equivalent environments
Knowledge of and passion for AI-related technologies
Preferred Qualifications
- Practical experience with voice products (ASR/TTS/voice signal processing/speaker separation, etc.)
- Production experience with model inference (Triton, TorchServe, ONNX Runtime, TensorRT, etc.)
- CTI integration experience with Twilio / SIP / Asterisk
- Experience operating large-scale data infrastructure (BigQuery, Redshift, Snowflake, etc.) or data lakes
- Implementation experience with dialogue systems combining LLMs (GPT series, Gemini, etc.) and RAG
- System development experience utilizing natural language processing or machine learning
- Machine learning model development experience using Python, TensorFlow, PyTorch
- Experience with chatbot, speech recognition systems, or AI agent development
- Full-stack application development experience (TypeScript/React)
- Experience launching new businesses/products from the 0→1 phase
- Customer negotiation or project management experience
- Bilingual (Japanese/English)
Tech Stack
- Languages: Python (for framework development), TypeScript / React / Next.js (frontend) / NX
- Infrastructure: GCP (containers / Kubernetes), Docker
- Voice & ML: Triton / ONNX / TorchServe / PyTorch / TensorFlow
- Streaming: Kafka / Pub/Sub / WebRTC / Twilio
- Tools: Slack, Confluence, Linear, Google Workspace, GitHub, Notion, etc.
- Work Environment: Mac (Apple Silicon), dual monitors available
Learning and Development Support
- AI Tool Usage Support:
- Company covers the cost of using AI tools such as JAPAN AI SaaS services, Curosor, CharGPT, Claude, etc.
- Development Tool Support:
- If a desired development tool is paid, the cost is covered (up to 30,000 yen per year)
- Book Purchase Assistance:
- Company covers the cost of purchasing books for learning, such as technical books (up to 30,000 yen per half-year)
- Language Learning / Qualification Support:
- Company covers the cost of Japanese or English learning programs and qualification acquisition
- Refresh Allowance:
- Company covers the cost of services used for personal refreshment (up to 5,000 yen per month)
- e.g., gym, yoga, chiropractic, aquarium, movies, theme park tickets, etc.
- Housing Allowance:
- Housing allowance provided for those living in designated areas (up to 30,000 yen per month)
Work Style
Hybrid Work: 3 days in office, 2 days remote
Flexible working hours: Core time is negotiable
Flexibility: Future consideration for more flexible work styles is possible
Selection Process
CV Screening → Coding test → Multiple Interviews → Final Interview
(Reference checks are required before the final interview.)
| 職種 / 募集ポジション | 【JAPAN AI】AI Solution Architect (Speech Product) |
|---|---|
| 雇用形態 | 正社員 |
| 給与 |
|
| 勤務地 |
| 会社名 | 株式会社ジーニー |
|---|---|
| 事業内容 | ・広告プラットフォーム事業 ・マーケティングSaaS事業 ・デジタルPR事業 |
| 設立年月日 | 2010年4月14日 |
| 代表者 | 代表取締役社長 工藤 智昭 |
| 資本金 | 100百万円（連結、2025年3月末現在） |
| 従業員数 | 877名（連結、2025年3月末現在） |
| 本社所在地 | 東京都新宿区西新宿6-8-1 住友不動産新宿オークタワー5/6階 |
| 就業時間 | 10:00～19:00 ※土日祝は休業日となります ※出向の場合は、出向先の規程に準じます |
| 福利厚生 | 【待遇・福利厚生】 <正社員> ・書籍購入補助（半期 30,000円まで） ・リフレッシュ手当（毎月 5,000円まで） ・部活動手当（毎月5,000円まで） ・家賃手当（当社指定の駅を対象とし毎月30,000円まで） ・シャッフルランチ/ディナー（四半期に一度ランチ1,000円まで、ディナー5,000円まで） ・資格取得支援制度、英語学習支援制度（業務に必要な場合のみ） ・リフレッシュ休暇制度（3年間継続勤務した社員へ毎年付与される特別休暇 2日） ・定期健康診断（年1回） ・従業員持株会 <契約社員> ・書籍購入補助（半期 30,000円まで） ・リフレッシュ手当（毎月 5,000円まで） ・部活動手当（毎月5,000円まで） ・シャッフルランチ/ディナー（四半期に一度ランチ1,000円まで、ディナー5,000円まで） ・リフレッシュ休暇制度（3年間継続勤務した社員へ毎年付与される特別休暇 2日） ・定期健康診断（年1回） 【保険】 ・社会保険完備 【諸手当】 ・交通費全額支給 |
| 代表プロフィール | 早稲田大学大学院卒業後、株式会社リクルート（現 株式会社リクルートホールディングス）へ入社。2010年4月株式会社ジーニーを創業、代表取締役社長に就任。2023年4月には戦略的AIカンパニーJAPAN AI株式会社を設立し、同社の代表取締役社長を兼任している。 |
| 企業成長ランキング | ■ Financial Times社発表のアジア成長企業ランキング2020を受賞 Financial Times社とStatista社が、アジア太平洋地域12カ国5,000万以上の企業を対象に実施した調査で、飛躍的活躍を遂げた企業500社に選出されました。 |
| 休日休暇 | 完全週休二日制 所定休日：土・日・祝日 休暇：年次有給休暇、夏季休暇（3日）、年末年始休暇（12月31日〜1月3日）、慶弔休暇 |
| グループ会社 | CATS株式会社（日本） JAPAN AI株式会社（日本） ソーシャルワイヤー株式会社（日本） Geniee International Pte., Ltd.（シンガポール） Geniee Vietnam Co., Ltd.（ベトナム） PT. Geniee Technology Indonesia（インドネシア） PT. Adstars Media Pariwara（インドネシア） Zelto,Inc.（米国） AdPushup Software India Pvt Ltd.（インド） |
| 備考 | ・試用期間 正社員/契約社員：1か月 ・受動喫煙対策 敷地内禁煙（屋外に喫煙場所設置） ・従事すべき業務の変更の範囲 会社の定める業務 ・就業の場所の変更の範囲 会社の定める場所 ・有期労働契約を更新する場合の基準に関する事項（通算契約期間又は更新回数の上限を含む） 更新の上限なし |