Senior Backend Engineer

Job Description This role focuses on transforming the manufacturing industry by structuring complex data and turning it into valuable information assets. You will be responsible for backend development, taking ownership of technical selection and architectural design to create high-quality, scalable software. Key Responsibilities Technical Leadership: Lead technical selection and architectural decision-making for a rapidly expanding service and organization. System Architecture: Build backend applications with a strong focus on long-term maintainability and operational sustainability. Strategic Alignment: Formulate and execute technical strategies that align with broader business objectives. Roadmap Planning: Propose and drive technical improvements and feasibility assessments based on the long-term product roadmap. Development Excellence: Lead efforts to solve productivity challenges through CI/CD optimization (specifically Docker environments), coding standards, and the implementation of schema-driven development. Requirements Must-Have Technical Expertise: Proven experience leading development by reducing product uncertainty through technical expertise. Architecture Design: Experience leading architectural design that accounts for non-functional requirements, medium-to-long-term maintainability, and scalability. Critical Selection: Ability to evaluate the pros and cons of languages, frameworks, and libraries (especially for logging, monitoring, and user events) while balancing technical and business needs. Infrastructure Skills: Experience designing and building service infrastructure for asynchronous jobs. Delivery Management: Experience improving delivery quality, lead time, and productivity in projects involving multiple stakeholders through systematic methods (requirements definition, scheduling, progress management). Language: Fluent business-level Japanese communication (equivalent to JLPT N2 and above) Preferred Qualifications: Language Proficiency: Experience with static typing languages (e.g., Rust, Scala) and Docker-native infrastructure. Advanced Patterns: Expertise in microservices, Domain-Driven Design (DDD), and leading improvements based on Scrum or Agile methodologies. Full-Stack Awareness: Knowledge of frontend or cloud infrastructure (e.g., Google Cloud) to contribute to surrounding design areas. English: Business-level English proficiency. Benefits Compensation & Financials: Annual Salary: Competitive based on experience and skills. Salary reviews conducted twice a year with salary increase/promotion + Stock option system available. Work-Life Balance: Flexibility: Flex-time system (Core hours: 11:00 – 16:00). Hybrid Work: Remote-work-based environment with occasional recommended office days or off-site meetings. Holidays: 121 days off per year, including full weekends, 6-day New Year’s leave, and 3-day flexible summer leave. Refresh Leave: 5 consecutive days of leave provided every 5 years of service. Specialized Allowances & Support: Growth Support: Monthly server cost subsidy, book purchase assistance, and external training funding. Social & Team Support: Subsidies for team lunches/dinners and cross-departmental interaction meals. Family Support: Marriage, birth gifts, and moving assistance. Health & Wellness: Full social insurance, PC provided, and full subsidies for health checks, gynecological exams, and human dock procedures.