• Full-time

Publication date： 2026.11.06

[SHIFT] 【Technology_AI Architect】Solution Architect

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary： JPY 12,000,000 - 20,000,000
【SHIFT】ソリューションアーキテクト【AI×IT戦略×構想策定/定年70歳】
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile [Company] SHIFT

They are a company that specializes in quality assurance and testing, which are essential for software development. In order to deliver safe and secure products to a world filled with software products that cannot exist without them, they have developed a unique business model that provides cross-sectional quality assurance services, from consulting in the upstream process of development projects, development work that focuses on quality, and testing work just before product release.

They are involved in a wide range of products and services, including enterprise fields such as finance and distribution, and entertainment fields such as web and games, and participate in projects as a primary contractor through direct transactions with user companies.

In a blue ocean market with no competitors, they are a company that has continued to grow sales by more than 150% annually, creating a virtuous cycle in which employees are rewarded with rewarding work and results.
仕事内容Job description ■Role of This Position
This position is responsible for analyzing existing systems using AI and defining the structure and design policy for the next system.
We will reorganize systems that have become complex through ad hoc modifications, starting from their structure, and rebuild them into a form that is easier to understand and more resilient to change.
■What You Will Gain
・Decide for yourself "why this design"
・Take end-to-end responsibility from current-state analysis to design using AI
・Take part in development where design and implementation do not diverge
・Be involved in upstream decision-making while staying hands-on with technology
・Structural analysis of existing systems through reverse engineering
・System visualization and structural understanding using AI
・Architecture design for new systems
・Formulation of modernization policy (rebuild / rewrite, etc.)
・Design of AI-premised design, implementation, and testing processes
・Review policy and quality assurance design for AI-generated code
・Participation in project launch
■Team Structure
In the AI Modernization Division,
・Engineers who advance design and implementation using AI
・PMs who take overall responsibility for the project
・Strategists who are responsible for the strategy and structure of new systems
Rather than being separated, they will advance projects while sharing structure.
Position of the Business
The AI Modernization Division is a business that serves as the core of the next growth of 株式会社SHIFT.
Management, including the representative, positions this area as "the next pillar of the company" under the business of the Native AI era.
・Investment and talent are being strengthened
・Mainly large-scale projects related to core systems
・An area for building long-term relationships with customers
■Why This Position Is Needed
In recent years, the following issues have become apparent in development sites:
・Requirements definition and design have become person-dependent
・Scale is increasing while processes remain traditional
・PMs and engineers are busy with coordination and management and find it difficult to focus on creating their core value
We view modernization not simply as renewal, but as a
redesign of structure, in response to these issues.
▼Executives and Division Head Speak! What Is the AI Modernization Division?
The newly established AI Modernization Division seeks people who "embrace responsibility and love."
Strengths of This Business
Many companies have strengths in either "ideation" or "development."
Meanwhile, SHIFT handles the following end to end:
・Structural visualization (reverse engineering)
・Strategic design
・Development execution
・Quality assurance (including AI-generated code)
We value being a partner that puts customers first and takes responsibility until the end.
In addition, we use our proprietary framework "DQS" as the foundation supporting these efforts.
DQS is a mechanism that supports the process consistently, not only in the development phase but also from structural understanding through reverse engineering to design, implementation, and testing.
As a result,
・Ideas can be directly connected to design and implementation
・Grounded design is possible by utilizing analysis results
・The development process, including AI utilization, can be carried out with high reproducibility
In this way, we realize development that does not separate structural understanding from execution.
▼Developers Explain "DQS"
・Breaking through the "implementation wall" with AI: The next-generation engineering shaped by SHIFT's AI-driven development
・Dismantling the "black box" with the AI Modernization Analysis Tool: The happy form of development we want to achieve
・Building an AI-driven development process with Devin
└ Part 1 / Part 2
・Devin in Practice
Regarding Modernization
What we are working on is
not mere maintenance or life extension.
・Dismantling black boxes
・Eliminating unnecessary complexity
・Redesign premised on AI
This is the work of designing systems that will support the businesses of the future.
Finally
Ideas are possible.
But are you able to take responsibility beyond them?
・I want to solve social issues
・I feel uncomfortable with stopping at ideation
・I want to get involved in overall optimization
We are looking for people who want to use their technology as a weapon and solve social issues from the stage of ideation.
▼Reference Materials
・AI Modernization Service Release Article
・SHIFTDQS System Visualization Service Release Article
・AI Modernization Service Special Website
Assigned Department
Development Division
Job Title / Position
【Technology_AI Architecture】Solution Architect
応募資格Requirement - Lead experience in design and development in the construction of core business systems
- Lead experience in the requirements definition to design phases
- Experience in analyzing or redesigning existing systems
Candidates with any of the following experience will be able to contribute earlier:
- Knowledge of development process design using AI coding assistance tools, or of ensuring the quality of AI-generated output
- Experience in modernization (rebuild / rewrite)
- Design experience assuming the cloud (such as AWS)
- Experience designing microservices architecture
- Experience in technology selection or formulating development policies
- Candidates who can empathize with SHIFT's business content and vision
- Candidates who can work with aspiration, motivation, and a sense of responsibility
- Candidates who can accept things graciously
- Candidates who can take on work proactively
日本語力Japanese level Fluent
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours Discretionary work (9:00-18:15)
想定年収Salary JPY 12,000,000 - 20,000,000
条件・待遇Condition Fully five-day work week (two days off per week)
Salary revision
Twice a year
Insurance coverage
Fully provided
Measures to prevent passive smoking
Indoor smoking prohibited (smoking room available)
Retirement age
70 years old (limited to regular employees and contract/part-time employees who have converted to indefinite-term employment)
Selection process
Document screening
↓
First interview (group manager of the assigned department)
↓
Final workshop interview (manager of the assigned department)
↓
Job offer
↓
Joining the company
※The number of selection steps may change depending on circumstances.
※Interview dates and start dates are negotiable. Please feel free to contact us.
Other initiatives
・Maternity, paternity, childcare, and nursing care leave systems
・Comprehensive social insurance coverage (employment insurance, workers' accident compensation insurance, health insurance, welfare pension insurance)
・Commuting allowance (with upper limit)
・Skill development support (qualification acquisition support) system
・Internal job posting system
・SHIFT partner nursery system
・Stock grant ESOP trust system
・Use of facilities partnered with the health insurance union (東京都情報サービス産業健康保険組合)
・Bicycle commuting system
・Club activities
・Various internal events (company general meetings and awards), etc.

[Employment type]
Regular employee
Posting date
2026/6/29
Have you decided for yourself "why this design"?
In many workplaces, requirements are handed down from upstream while still vague, decisions are made by clients or consultants, and engineers are confined to implementation.
As a result, the more an engineer understands the structure, the more they are forced to implement designs they cannot accept.
The "Solution Architect" we envision is a position that starts from reverse engineering existing systems to understand their structure, and drives project and product development centered on AI-driven architecture design.
Beyond design alone, you will be responsible for defining the overall system structure and for design decisions, and will lead the work consistently from design through implementation.
Salary
Expected annual salary: approximately 12,000,000 yen to 20,000,000 yen
※Determined through consultation according to experience, performance, and contribution.
[Working hours]
9:00–18:15 (breaks 12:00–13:00 and 15:00–15:15), 8 hours of actual work
※For employees subject to the specialized discretionary work system, the deemed working hours per day are 8 hours.
Break time
12:00–13:00, 15:00–15:15
Overtime work
Yes (average of approximately 7.2 hours per month; actual results for the August 2025 period)
[Holidays]
↓
↓
↓
↓
[Holidays and leave]
・Fully five-day work week (two days off per week, Saturday and Sunday)
・National holidays
[Leave]
・Sick leave and nursing care leave
・Year-end and New Year holidays
・Paid vacation (10 to 20 days)
・Congratulatory and condolence leave
(marriage leave, child's marriage leave, spouse's childbirth leave, etc.)
選考についてProcess
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