Tech Stack
Job Description, Responsibilities & Requirements
About the Position
IoT Software Engineer, Smart Home and Office
Location: Tokyo
Company: Woven by Toyota
Employment Type: Employee
Work Location: Hybrid
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.
For more information about Woven City, please visit: Woven City
Responsibilities
As an IoT Software Engineer, you’ll be responsible for the development and operation of software that runs on edge devices controlling home appliances. These devices form a foundational layer in a platform that ensures safe, seamless, and energy-efficient living-connected to mobile apps and cloud services.
- Develop and operate edge software for smart home devices, primarily using Python in Dockerized environments
- Lead the end-to-end development cycle: from requirements gathering and architecture design to implementation and testing
- Design real-time control and data pipelines using asynchronous protocols such as MQTT
- Optimize embedded firmware layers based on Thread, Zigbee, or other IoT protocols (written in C)
- Collaborate cross-functionally with platform, security, and operations teams to deliver a secure, extensible, and city-scale IoT infrastructure
- Contribute to a high-performance engineering culture through knowledge sharing and mentorship within the team
Requirements
- Bachelor’s degree in Computer Science, Engineering, or related field-or equivalent hands-on experience
- Proven experience in specification design and system architecture based on stakeholder requirements
- Hands-on experience with real-time data processing using MQTT or similar asynchronous protocols
- 3+ years of Python software development experience
- 5+ years of experience using multiple programming languages (e.g., TypeScript, Go, Python, C)
- Business-level Japanese proficiency and a willingness to improve English skills
Nice to Have
- Experience building embedded software for mass production using at least one IoT protocol (Zigbee, Matter, Thread, BLE, Echonet Lite, etc.)
- Solid understanding of agile development, with high standards for code quality and testing
- Experience with AI/ML-powered image processing systems for cameras
- Hands-on collaboration with hardware vendors and managing hardware/software integration
- Experience building cloud applications for IoT (e.g., AWS, GCP)
- Ability to prototype rapidly using AI-assisted tools like Claude Code, GitHub Copilot, or similar
- Business-level English proficiency
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.
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.