Engineering Internship – Embedded Software & Electronics

Intern / Student, Full-time · Diemen

Your mission

As an Engineering Intern at Moonwatt, you will work at the intersection of embedded software electronics design, and electrical engineering. Among others, you will work on the development, testing and integration of our battery management system.

This is a hands-on internship where you will be contributing directly alongside senior engineers, develop and test prototypes, and build our production firmware.

The internship is designed with a strong intention to convert to full-time for high performers.

What You Will Work On

Embedded Software Development

Write cutting edge software in C/C++, focusing on high performance and low latency, for our Battery Management Unit (BMU) and Cell Monitoring Unit (CMU) boards
Help scale automated testing by creating Software-In-the-Loop and Hardware-In-the-Loop infrastructure, integrating validation coverage for a robust CI/CD process
Participate on the design and implementation of the Software Over-The-Air Updates process, focusing on robustness and cybersecurity of the product
Create new communication and control interfaces (Ethernet, CAN, RS485) that help integrate the software ecosystem across the different components
Collaborate with data engineering teams to analyze system logs and develop diagnostic and fault-detection firmware logic

Electronics & Hardware Support

Assist in PCB schematic design reviews, hardware bring-up, and troubleshooting for BMS electronics
Support validation and testing of low-voltage and high-voltage electrical architectures within battery systems

System Integration & Testing

Assist in integration and assembly of battery packs and BMS electronics within prototype enclosures
Support functional, safety, and thermal testing activities for BMS firmware verification and validation
Interface with suppliers and manufacturing partners to support component testing, quality control, and documentation

Your profile

Must Have

Currently enrolled in a Bachelor’s or Master’s degree program in Electrical Engineering, Embedded Systems, Electronics, Mechatronics, Robotics, or related technical field
Strong proficiency in embedded C and C++ programming with hands-on experience in microcontroller firmware development
Basic familiarity with PCB schematics, datasheets, hardware debugging tools (oscilloscopes, logic analyzers)
Knowledge of battery systems fundamentals and basic power electronics concepts
Hands-on, test-driven approach to embedded system design, debugging, and validation
Curious, precise, and eager to learn within a highly collaborative, multidisciplinary engineering environment
Minimum internship duration of 6 months (end-of-study internship preferably)

Nice to Have

Previous experience in students' organizations like Formula Student, robotics organizations or electric boat competition will be highly valued
Experience with BMS firmware development or exposure to battery management principles
Familiarity with PCB design tools such as Altium Designer or KiCAD
Basic scripting skills (e.g., Python) for test automation or data analysis
Previous hardware bring-up experience including component-level testing and validation
Interest or background in renewable energy, energy storage, or electric vehicles (EV) domains
Awareness of embedded safety standards and lab safety practices

Why us?

An engineering internship with real responsibilities, not administrative tasks
Exposure to multiple disciplines beyond your core skillset
Direct mentorship from senior engineers and who built large-scale energy systems before
A learning environment where you will participate in decisions, not just observe
A path to full-time conversion for high-performing interns
A fast, mission-driven environment where engineering decisions matter

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About us

Moonwatt is developing the next generation of highly competitive Energy Storage Systems utilizing advanced sodium-ion battery technology. Our hardware and software solutions are optimized for co-location with solar power plants, enabling them to completely replace fossil-fuel power generation on the world’s power grids. We are seeking talented individuals across all areas whether you are in engineering, marketing, design, project management, HR, or finance. Join our team push the boundaries of innovation. If you are driven by the desire to create change, tackle big challenges, and make a meaningful impact, we’d love to have you onboard!

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