【Engineering & Research Division】Firmware Engineer

【Engineering & Research Division】Firmware Engineer

株式会社パワーエックス

Engineering&Research

仕事概要

About the Role

We are looking for a Firmware Development Engineer to join our Engineering & Research Division.

PowerX develops and delivers energy storage and power transfer solutions, including battery systems, charging systems, and related energy management technologies. Within the Engineering & Research Division, engineers work across hardware, embedded systems, cloud, software, and product lifecycle management to develop reliable and scalable products for real-world energy infrastructure.

This role will focus on firmware development for embedded systems used in our battery and energy-related products. You will work closely with hardware engineers, electrical engineers, and software engineers to design, implement, test, and improve firmware that supports stable product operation in demanding field environments.

About Engineering & Research Division

The Engineering & Research Division is responsible for 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.

Responsibilities

• Develop embedded firmware for microcontroller-based systems used in PowerX’s battery and energy-related products.
• Design and implement low-level drivers and interfaces, such as UART, SPI, I2C, ADC, PWM, GPIO, and timers.
• Create firmware specifications based on datasheets, reference manuals, schematics, and product requirements.
• Test, debug, and improve firmware in close collaboration with hardware, electrical, and software engineers.

必須スキル

Requirements

• Experience in embedded firmware development using C or C++.
• Hands-on experience with microcontrollers and peripheral interfaces such as UART, SPI, I2C, ADC, PWM, and GPIO.
• Ability to read device datasheets, reference manuals, and electrical schematics.
• Experience testing and debugging embedded systems using tools such as oscilloscopes, logic analyzers, or JTAG/SWD debuggers.

応募概要

給与800-1500万円

勤務地Tokyo Kyobashi Office ( 22F, TODA BUILDING, 1-7-1 Kyobashi, Chuo-ku, Tokyo 104-0031, Japan) and POWERD LAB ( power-x.jp/en/about/powerd-lab )

雇用形態Full Time Employee

勤務体系●Working hours/month

• Scheduled working hours: 8 hours*Scheduled working days
• Flexible hour system (core time 11:00-15:00, 60-minute break)

Holidays/Vacations/Holidays

• Saturdays, Sundays, national holidays, year-end and New Year holidays, and other days designated by the company
• Vacations: Paid holidays 12 days in the first year (5 days granted at the time of joining the company, remaining 7 days granted after 6 months)
• Special leave for special occasions, etc.

試用期間Three months

福利厚生⚫︎Full social insurance coverage (employment insurance, workers' compensation insurance, health insurance, welfare pension insurance)

⚫︎Employee stock ownership plan (with incentives)

企業情報

企業名株式会社パワーエックス

設立年月2021年3月

本社所在地本社工場：〒706-0001 岡山県玉野市田井6-9-1

支社所在地東京京橋オフィス：〒104-0031 東京都中央区京橋1-7-1 TODA BUILDING 22階

POWERD LAB(研究開発センター): 東京都大田区

事業内容⼤型蓄電池の製造・販売、量産型コンテナデータセンターの開発・販売、再生可能エネルギー等の電力供給、およびEVチャージステーションのサービス展開

採用活動におけるハラスメント防止指針

drive.google.com/file/d/1TONXjPWmiO9YX--UDc7DPe…

資本金5,422 百万円

従業員数180名（2026年08月31日時点）

企業サイトURLpower-x.jp