Full Stack Engineer

Engineering & Research Division / Full Stack Engineer

About Engineering & Research Division

The Engineering & Research Division is responsible for the end-to-end development of PowerX’s hardware and software systems for energy storage and power transfer solutions.

The division consists of approximately 50 specialists and is organized mainly into the following teams:

• Series Development: Responsible for prototyping, testing, validation, requirements engineering, product handover, product support, and commissioning.
• Advanced Engineering: Responsible for research and development of emerging technologies, including embedded systems, PCB design, model-based development, battery management, power conversion, digital twins, edge computing, cloud solutions, and AI/ML-based optimization.
• Product Lifecycle Management: Responsible for managing product and project lifecycles across quality gates, sourcing, value engineering, manufacturing, and after-sales activities.

You will work in a diverse engineering environment with members from various technical and cultural backgrounds. The team values autonomy, ownership, and hands-on problem solving, and engineers are encouraged to take initiative in shaping technical decisions.

Description

About the role

We are looking for a Full Stack Engineer to join our Engineering & Research Division.

PowerX develops and delivers energy storage and power transfer solutions, including battery systems, EV charging systems, and related energy management technologies. This role will focus on the development of software applications that support the operation, automation, and optimization of these energy assets.

In particular, you will lead server-side development for our Energy Management System applications. The Energy Management System serves as the intelligence behind our battery solutions, enabling automation, monitoring, optimization, and operation across various electricity markets and use cases.

Although this is a full stack position, the role is especially focused on backend and server-side development. You will design and implement scalable, reliable, and secure backend systems that connect energy assets, cloud services, web applications, mobile applications, and operational tools.

Job Scope

• Design, develop, and maintain high-performance, scalable, reliable, and secure backend systems for PowerX’s energy-related applications
• Develop server-side logic and APIs for web applications, mobile applications, and services related to energy management, battery management, charger management, and asset management
• Build backend systems that support automation, monitoring, optimization, and operation of battery and energy infrastructure
• Design software architecture that can handle increasing data volume, device connectivity, and operational complexity
• Collaborate with frontend engineers to integrate user-facing applications with backend services
• Collaborate with cloud, SRE, embedded, edge, EMS, and product teams to ensure end-to-end system reliability
• Maintain and improve backend infrastructure to meet evolving product and business requirements

Requirements

• Software development experience using JavaScript, TypeScript, Java, Kotlin, Go, Rust, or similar languages
• Strong backend development experience, including API design, server-side application development, and system integration
• Fundamental computer science knowledge, including algorithms, data structures, networking, operating systems, and databases
• Experience designing and developing scalable, reliable, and maintainable software systems
• Experience with cloud-based application development and modern software architecture
• Understanding of performance, scalability, security, and reliability considerations in backend systems
• Ability to collaborate with frontend, cloud, SRE, embedded, edge, and product teams
• Ability to translate business and product requirements into technical design and implementation
• Business-level English communication skills

Preferred Experiences

• Experience with GCP, AWS, Azure, or other cloud platforms
• Experience with Kubernetes, Docker, Terraform, or other cloud-native technologies
• Experience with microservices architecture, gRPC, REST APIs, or event-driven architecture
• Experience developing systems that handle IoT devices, time-series data, operational data, or large-scale data ingestion
• Experience with energy management systems, battery systems, EV charging systems, asset management systems, or industrial software
• Experience with VPP, demand response, electricity markets, OpenADR, or energy optimization systems
• Experience with databases, message queues, monitoring, logging, and observability tools
• Experience working with SRE or DevOps teams to improve deployment, reliability, and production operations
• Experience contributing to open-source software
• Japanese communication skills are a plus