Overview
Position:
Senior Software Engineer (Web / Backend)
Salary:
From JPY 8,000,000 per year
Language:
Conversational Japanese required, English usable
Remote:
Hybrid (3 days office / 2 days remote)
About the Company
The company is a technology-driven company operating at the intersection of Real Estate, AI, and Digital Transformation.
Their mission is to create excitement and inspiration by combining technology with innovation, driving meaningful change in large-scale, traditionally analog industries.
By leveraging data, AI, and modern software engineering practices, they build platforms that improve operational efficiency and customer experience across real estate transactions and related domains.
The company is in a high-growth phase, continuously developing market-defining products and scaling both domestically and internationally.About the Role
As a Senior Software Engineer, you will play a key role in designing and building scalable systems that address complex, real-world challenges in a data-intensive business domain.
You will collaborate closely with product managers, designers, and business stakeholders to translate requirements into robust technical solutions, while also taking ownership of architectural decisions and long-term system quality.
Development EnvironmentArchitecture:
Microservices, event-driven systems
Cloud:
Public cloud (containers, serverless, cloud-native services)
CI/CD:
Automated testing, continuous integration and deployment
Databases:
Relational and non-relational databases
Version Control:
Git
※ Technology selection is flexible and driven by problem context
Position Responsibilities
Design and develop large-scale, high-availability web and backend systems
Address complex domain challenges such as data asymmetry, workflow digitization, and scalability
Design systems with careful consideration of algorithmic efficiency and data structures
Lead technical discussions on architecture, technology selection, and best practices
Improve system reliability, performance, and development efficiency
Mentor junior engineers and contribute to overall team growth
Take ownership of code quality through reviews, testing, and CI/CD improvements
Salary
Annual
Salary:
From JPY 8,000,000
Monthly
Salary:
From JPY 667,000
(Includes fixed overtime allowance for 30 hours)
Overtime exceeding 30 hours is compensated separately
Final compensation is determined based on skills and experience
Qualifications
*Required
Conversational Japanese (mandatory during the hiring process)
5+ years of experience designing, developing, and operating large-scale web or backend systems
Experience collaborating with multiple stakeholders across teams
Strong understanding of software design principles and architectural patterns
Experience implementing quality-focused development practices (testing, code reviews, CI/CD)
Solid knowledge of relational database design (normalization, indexing) and scalability considerations
*Preferred
Experience leading multiple engineers or technical initiatives
Experience launching new products or services from scratch (0→1)
Long-term ownership of a single product with continuous improvements
Mid-to-long-term technical decision-making experience
Hands-on exploration and production adoption of new technologies
Work Environment
Work Style
Hybrid work:
3 days in office / 2 days remote (in principle)
Fully remote work is not standard, but individual circumstances can be discussed
Location
Central Tokyo office (direct station access, multiple lines available)
Work Schedule
Full flex-time system
No core hours (work between 7:00–22:00)
Standard working time: 8 hours per day
Holidays and Leave
Complete two-day weekend system
National holidays
Annual paid leave
Year-end and New Year holidays
Maternity, childcare, nursing care, and special leave programs
Allowances and Benefits
Full social insurance coverage
Housing allowance (for residences within a certain distance from the office)
Transportation allowance
Family and childcare support programs
Certification and skill development support
Employee stock ownership plan
Optional online language learning support
Internal community and club activities
Office amenities and meal services
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