What's In It For You
Build a first‑of‑its‑kind platform in Japan: Work on a greenfield PaaS platform that is reshaping how independent professionals work—rare ownership and impact at an ecosystem level.
High‑leverage technical role : You will be a critical engineering hire, with direct influence over architecture, product direction, and the future scale of the business.
Work at the frontier of agentic AI: Partner with AI research teams to build real, production‑grade autonomous agent systems—not POCs or experimental models.
End‑to‑end product ownership: You'll speak directly with stakeholders, run discovery, own delivery, and see immediate impact—no external client constraints.
Startup energy inside an enterprise backbone: Enjoy autonomy, speed, and experimentation while benefiting from the stability of a large professional services organization.
Flexible engagement model: Choose between contract or permanent arrangements, depending on what best fits your goals.
Meaningful societal impact: Your work directly supports Japan's evolving independent workforce and contributes to a more flexible, modern labor ecosystem.
Project Overview:
We're looking for a Product Engineer to help architect and build the core platform of a professional services business. You'll work across cloud services, system integrations, data engineering, and AI‑driven experience design. This role is essential to shaping the foundation of a new platform and delivering end‑to‑end product experiences that delight users. Your involvement in the project will be carried out as an independent subcontractor.
Project Information:
Company: EY Strategy and Consulting, Co. Ltd.
Address: Hibiya Mitsui Tower, Tokyo Midtown Hibiya, 1-1-2 Yurakucho, Chiyoda-ku, Tokyo Japan
Work location: Within 23 wards of Tokyo
Contract type: Service entrust contract (業務委託)
Salary: 12,000-17,000 JPY/hr
Scope of service
Contract type: Project-based contract.
Build and scale core components of our Platform‑as‑a‑Service (PaaS).
Develop robust applications that connect contractors and clients seamlessly.
Design system integrations across modern and legacy tools.
Collaborate with AI research teams to build agentic, autonomous services.
Lead rapid prototyping and create internal tools with Power Platform or custom code.
Own the product lifecycle from stakeholder discovery to delivery.
Implement CI/CD automation, testing, and secure operational practices.
Qualifications and requirements:
Hands‑on experience building on Azure or comparable cloud platforms.
Proficiency in modern front‑end or full‑stack frameworks (React, Angular, Vue, , Python, .NET).
Strong understanding of APIs, systems integration, and scalable data architecture.
Ability to prototype quickly and iterate based on stakeholder feedback.
A customer‑centric mindset and passion for building high‑quality product experiences.
Adaptability and comfort working in a transforming, startup‑like environment.
English fluency; conversational Japanese.
Language Requirements:
Japanese: Native level.
English: Fluent level in reading, writing, and speaking.
Working Conditions:
The team primarily works in the office, and you will have autonomy on your own schedule and outcomes.
Next Steps:
Screening by EY Interim Professionals Talent & Tech Teams.
EY Compliance and Independence Check.
Client Introduction.
Who We Are:
We are Interim Professionals, and we are shaping the future with confidence by building Japan's community of 11 million lifelong learners. Our independent contractors are a part of our team, and our mission is to help you unlock your potential.
By giving you access to EY's best-in-class learning & development, paired with high touch consultancy projects that you will not see anywhere else, we open avenues for you to upskill and join our community to build the workforce of the future in Japan.
For inquiries please contact: and
Equal Employment Opportunity Information
EY is strongly committed to equal opportunity and values the diversity of our work force and the knowledge of our people.
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