Full Stack Engineer

Overview:

A rapidly growing energy technology company is seeking a senior Full Stack Engineer to lead
backend development for large-scale Energy Management and Battery Management platforms. The
system functions as the intelligence layer behind distributed energy storage solutions, enabling
automation, optimization, and participation in electricity markets.

Key Responsibilities
• Design, develop, and maintain high-performance, scalable, and secure backend systems.
• Architect server-side logic supporting web and mobile applications for energy, battery, charger,
and asset management systems.
• Lead projects from design through deployment while ensuring reliability and responsiveness.
• Collaborate with frontend engineers to integrate user-facing components with backend
infrastructure.
• Write clean, maintainable, reusable, and testable code aligned with business and technical
objectives.
• Continuously optimize infrastructure to support evolving product and market needs.
Required Qualifications
• 10+ years of software development experience using one or more of the following: JavaScript,
TypeScript, Java, Kotlin, Go, or Rust.
• Strong foundation in computer science fundamentals including algorithms, data structures, and
networking.
• Proven experience designing scalable system architecture and backend infrastructure.
• Ability to design systems with performance, reliability, and maintainability in mind.

Preferred Experience:
• Experience with cloud platforms such as GCP or AWS.
• Hands-on experience with Kubernetes, Terraform, and microservices architecture.
• Experience using gRPC in distributed systems.
• Exposure to energy market systems, Virtual Power Plant (VPP) frameworks, or OpenADR.
• Contributions to open-source software projects.

Work Environment:
This role is based in Tokyo and requires on-site collaboration at a dedicated R&D; facility. The
company operates under a flexible working hour system with a core time structure. The engineering
division consists of multidisciplinary teams covering advanced research, product lifecycle
management, and series product development in energy storage and power transfer solutions.

Compensation is competitive and determined based on skills and experience. Full social insurance,
employee stock incentives, and comprehensive benefits are provided.