Conversational AI System Engineer, Info Mobility Car

About Woven by Toyota
Woven by Toyota is enabling Toyota’s once-in-a-century transformation into a mobility company. Inspired by a legacy of innovating for the benefit of others, our mission is to challenge the current state of mobility through human-centric innovation — expanding what “mobility” means and how it serves society.

Our work centers on four pillars: AD/ADAS, our autonomous driving and advanced driver assist technologies; Arene, our software development platform for software-defined vehicles; Woven City, a test course for mobility; and Cloud & AI, the digital infrastructure powering our collaborative foundation. Business-critical functions empower these teams to execute, and together, we’re working toward one bold goal: a world with zero accidents and enhanced well-being for all.

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TEAM
Toyota is redefining what it means to move. We're challenging the current state of mobility by enhancing the movement of people, goods, information and energy. Centered around three core concepts - A Living Laboratory™, Human-Centered, and Ever Evolving City™ - Woven City serves as a test course for mobility to fulfill our purpose of well-being for all.

We do this by bringing together a diverse community of people with a shared passion for the future of mobility to co-create, develop and refine innovative products and services. This cross-section of social infrastructure, mobility, and people provides a unique opportunity for inventors, residents and visitors to interact seamlessly with new technologies throughout daily life in an environment that emulates a real city.

We are researching and developing new remote services that apply our proprietary XR technology.
Our mission is to develop products reflecting the results of this research with our partner company and provide them to Woven City and others.
We are trying to develop a full-stack product from our research by bringing together engineers from various fields.

For more information about Woven City, please visit: https://www.woven-city.global/

WHO ARE WE LOOKING FOR?
We are looking for engineers who are passionate about commercializing and popularizing cutting-edge technologies under research.
You are expected to have practical experience and in-depth knowledge of software development, and to think, design, and implement software with high performance and high quality together with your colleagues.
You will report to the lead of the sub-function. The work style is hybrid (remote and office).
Business trips may be required for evaluations, experiments, and similar activities. (4 days per month on average)

RESPONSIBILITIES
You will contribute to the end-to-end development of a voice-based dialogue system for an AI agent. The goal is to create real products for vehicle edge devices.
　　　・Design, develop, and improve dialogue processing pipelines for a real-time conversational agent
　　　・Collaborate with researcher(s) to expand prototype models into production-ready systems
　　　・Optimize and accelerate components related to speech processing (ASR/NLP/TTS, signal processing, etc.)
　　　・Monitor performance and iteratively improve using real-world data from actual execution environments (edge device, OS, network conditions)
　　　・Improve user experience and system quality during the operation phase, including monitoring and metrics
　　　・Contribute to code review, configuration management, release processes, and cross‑team collaboration

MINIMUM QUALIFICATIONS:
• 5+ years of experience developing real-time speech/dialogue systems (ASR, NLP, TTS, etc.)
• Strong programming skills for performance optimization (C, C++）
• Experience in designing and implementing speech processing algorithms (noise reduction, source separation, AEC / AGC / VAD, etc.)
• Experience fine-tuning or optimizing LLMs for real-time systems
• Business‑level Japanese and Conversational‑level English

NICE TO HAVES:
• Experience with GPU-accelerated computing (e.g., CUDA) and optimization
• Python proficiency with experience in machine learning frameworks (e.g., PyTorch, Tensorflow)
• Experience in designing and implementing applications that communicate with backend systems
• Understanding of data privacy and security best practices in speech and conversational AI systems
• Experience in CI/CD pipelines and DevOps practices

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Important Points
・All interviews will be arranged via Google Meet, unless otherwise stated.
・The same job descriptions are available in both English and Japanese; therefore, we kindly ask that you apply to only one version.
・We kindly request that you submit your resume in English, if possible. However, Japanese resumes are also acceptable. Please note that, depending on the English proficiency requirements of the role, we may request an English version of your resume later in the process.

WHAT WE OFFER
・Competitive Salary - Based on experience
・Work Hours - Flexible working time
・Paid Holiday - 20 days per year (prorated)
・Sick Leave - 6 days per year (prorated)
・Holiday - Sat & Sun, Japanese National Holidays, and other days defined by our company
・Japanese Social Insurance - Health Insurance, Pension, Workers’ Comp, and Unemployment Insurance, Long-term care insurance
・Housing Allowance
・Retirement Benefits
・Rental Cars Support
・In-house Training Program (software study/language study)

Our Commitment
・We are an equal opportunity employer and value diversity.
・Any information we receive from you will be used only in the hiring and onboarding process. Please see our privacy notice for more details.