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Battery System Engineer / Architect

Confidential company · Berlin · Posted Aug 6, 2026

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Public summary

A defence technology company is seeking a Battery System Engineer to lead the design and integration of high-performance battery packs for unmanned aerial vehicles. The role focuses on optimizing size, weight, and power while ensuring safety, thermal stability, and lifecycle management. The position requires collaboration across mechanical, firmware, and aerospace teams and involves responsibilities ranging from system architecture and BMS integration to testing and manufacturing support.

Location and work setup

Location
Berlin
Remote status
On-site
German requirement signal
No German Required Detected
Detected job language
English

Responsibilities

Lead design and architecture of custom battery packs for UAVs, focusing on high discharge and strict weight requirements. Collaborate with firmware and electronics teams to define Battery Management System requirements, including SOC and SOH algorithms and protection logic. Work with mechanical engineers on thermal and mechanical management to prevent overheating. Develop and execute rigorous testing plans for battery packs, including safety and compliance with international standards. Support transition from prototype to mass production, ensuring quality and yield.

Qualifications

Bachelor's or Master's degree in Electrical, Mechanical Engineering, or related field. Over 3 years of experience in battery system design, preferably in aerospace, automotive (EV), or consumer electronics sectors. In-depth knowledge of lithium-based battery chemistry and failure mechanisms. Experience with BMS design, CAD software (Catia), PCB tools (Altium), and communication protocols (CAN, I2C, UART). Proficient in prototype building, soldering, and lab equipment. Security clearance eligibility is required due to defence industry involvement.

Skills

Battery system design Battery Management Systems (BMS) Lithium-based battery chemistries Cell monitoring and protection circuitry CAD software (Catia) PCB design and review (Altium) Communication protocols (CAN, I2C, UART) Prototype building and soldering Lab equipment usage (oscilloscopes, electronic loads, battery cyclers) Testing and validation of battery packs Thermal and mechanical management Compliance with safety and transport standards Python or MATLAB scripting for test data analysis (nice to have)