• Full-time

Publication date: 2026.04.13

[Almost Fully Remote] AI Engineer

  • R&D / Engineer /Technician (AI, Data)
  • Tokyo
  • Salary 8 to 12 million yen
【ほぼフルリモート】AIエンジニア
職種Position R&D / Engineer /Technician (AI, Data)
会社概要Company profile [Company Overview]
They leverage the power of AI and data to provide comprehensive solutions across three axes—management, business, and organization—to evolve companies' "decision-making mechanisms." They are not simply an analytics company, an advertising agency, or a SaaS vendor. They are a data company that "partners with ambitious companies and sees things through until results are achieved."

Their business is comprised of three main pillars:
① Data Utilization Consulting and Analysis Support Connecting Management and the Front Lines
Through the planning and execution of DX strategies and data utilization strategies, they build a consistent decision-making process between management and the front lines. Using KPI design, fact analysis, BI construction, and funnel decomposition, they achieve logical DX promotion without being overly reliant on on-the-ground intuition or overly theoretical.

② Marketing Strategy Execution and Technology Implementation Support for Maximizing LTV
In addition to advertising operations, CRM strategies, and social media utilization, they also utilize products such as generative AI and BI tools to support everything from acquiring new customers to strengthening engagement with existing customers. They implement sustainable business growth at the operational level.

③ Strengthening Organizations: Building In-House Development Support and Training Systems
Instead of outsourcing analysis and strategies, they aim for a state where "decision-making can be done according to their own will," and support the in-house development of data utilization and tool operation. By enhancing the self-sufficiency of the field, they enable the transformation of client organizations in the medium to long term.

Instead of repeatedly developing from scratch for each client, they have a versatile product platform and provide efficient and flexible support based on it. They have an engineering environment where you can lead the design and implementation of "usable AI" and "living data infrastructure" using their in-house developed "BI Suite" and "AI Craft."

【Company/Job Appeal】
As a 100% subsidiary of Mitsui & Co., they have a stable management foundation.
仕事内容Job description AI engineers/AI PMs act as a bridge between conception and implementation for clients' challenges.

Beyond mere model development or tool implementation, they understand the context of management, business, and operations, designing "how AI utilization will transform decision-making" and leading the project through to execution.

The key is not simply creating highly accurate AI, but achieving a state where it is "used in the field and leads to results."

To this end, they handle everything from use case design, requirements definition, data design, and development management to post-implementation utilization design and improvement.

Working in collaboration with engineers, analysts, and consultants, they are required to balance technical feasibility with business impact, ensuring the success of an "executable AI project."

More than just "development" or "management," they continuously define "how AI can be used to transform the business." That is the role of AI engineers/AI PMs at MBK Digital.

<Specific Job Responsibilities>
• Design, development, and operation of AI solutions utilizing data infrastructure
• Implementation of PoC projects and technical verification for production deployment
• Proposal of AI solutions based on client problem identification
• Development of AI agents utilizing internal documents and knowledge
• Understanding a range of knowledge related to AI models and ensuring observability (monitoring and visualization)
• Proposal of measures for data pipeline construction and model accuracy improvement
• Creation, standardization, and efficiency improvement of technical documentation
• Collaboration with PMs and PMOs to support the technical aspects of the entire project
• Technical support for client negotiations and upsell proposals
応募資格Requirement ▼Required Qualifications
・Business-level Japanese proficiency (equivalent to N2)
・Experience in data engineering or practical experience in AI development
・Experience in large-scale data infrastructure construction projects, including PoC
・Experience in team development and collaboration with multiple stakeholders

▼Preferred Qualifications
・Experience in AI projects from the proposal phase
・Experience in client negotiation and technical upsell proposals
・Experience in automating and streamlining model operation and improvement
・Experience in project management for AI implementation
日本語力Japanese level Business
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours フレックス制(実働 7.5時間・休憩時間1時間含む)
想定年収Salary 8 to 12 million yen
条件・待遇Condition Employment Type: Permanent
Trial period: 3 months
Estimated annual income:¥6M~¥10M
Work location: Tokyo, remote work possible. (※ Every Wednesday is a recommended day to come to the office. ※ Once a month, the company will basically have to come to the office.)
Working hours: 10:00~18:30
Holidays: 2 days a week (Saturdays and Sundays), national holidays
Vacation: Summer vacation, year-end and New Year holidays, and other vacations available
Overtime: Average month 20 hours
Benefits: Complete social insurance, commuting allowance (according to company regulations), and other benefits
選考についてProcess Number of applicants: 2~3
Documents required for application: Resume and career history
Online interview: Available (final interview for those in the Tokyo area is face-to-face)
Interview language: Japanese
Number of interviews (flow): 1-4 interviews
* May change depending on the situation of the candidate
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