Hammam Choiri

Electrical Engineer with hands-on experience in electronics development and a strong passion for automotive system integration, power electronics, and PCB development. Experienced as an R&D Electrical Hardware Engineer in end-to-end electronic hardware development. Specializing in both forward and reverse engineering, with expertise in PCB design, wiring architecture, and hardware-software integration, as well as comprehensive testing and validation.

RnD Battery Management System (BMS) Engineer at MAKA Motors (2025-02 – Present)

Fulltime Engineer conducting research and development for in-house BMS solutions for 2-wheeler EV architectures

• BMS Research & Collaboration. Conducting research and development for in-house BMS solutions for 2-wheeler EV architectures, collaborating with cross-functional engineering divisions to ensure targeted technology implementation for future battery pack products.
• Testing & Equipment Operation. Executing comprehensive testing from A-sample development to mass production, utilizing Bi-directional Power Supplies (BDI) for standardized durability validation and performance monitoring.
• Technical Troubleshooting. Performing root cause analysis and providing technical resolutions for field-related issues, implementing effective countermeasures and preventative planning to enhance system reliability.

RnD Electrical Engineer at BORINE Technology (2024-09 – 2025-02)

Contract position for technology transfer and PCBA localization

• Technology Transfer & PCBA Localization. Conducting the transfer of electronic design and manufacturing processes from HQ China, executing electrical redesigns and modifications for PCB hardware and wiring architectures to align with market specifications and customer requirements, and overseeing the transition from pilot to mass PCBA production.
• Batch Validation & Quality Assurance. Collaborated with the Testing Center to conduct per-batch performance audits, verifying manufacturing consistency and actual performance metrics meet quality standards.
• Production & Field Troubleshooting. Troubleshooting and failure analysis for electrical design issues both at the production line and at the end-user level, implementing design adjustments and countermeasures.

Research Assistant at PUI-PT Teknologi Penyimpanan Energi Listrik UNS (2023-02 – 2024-10)

Contract research assistant for hardware design and system integration of high-power battery packs

• Hardware Design & Prototyping. Executed comprehensive hardware plan design, component calculations, and prototyping for high-power battery packs, ensuring structural integrity and system compatibility.
• System Integration & Performance Validation. Conducted integration of BMS hardware with high-voltage battery modules, followed by performance testing to verify system reliability and functional safety.

Internship Student at PT. INDUSTRI KERETA API (Persero) (2023-07 – 2023-08)

Internship focused on propulsion system analysis for train systems

• Propulsion System Analysis. Conducted thrust requirement analysis for train propulsion systems and developed technical electrical schematics, including power flow and control systems, using AutoCAD Electrical.

Battery Laboratory Assistant at Faculty Of Engineering Sebelas Maret University (2023-03 – 2024-07)

Contract position for battery testing and data analysis

• Battery Testing Operation. Operated the industry-standard Chroma 17020 Regenerative Battery Pack Test System to execute comprehensive electrical parameter testing and performance evaluations on battery packs.
• Data Analysis & Reporting. Analyzed experimental data to generate technical reports based on the test results.

Bachelor's in Electrical Engineering – Universitas Sebelas Maret (UNS) (2020 – 2024)