Internship — Battery System Engineer

WEVEN; Netherlands; Remote; EUR 10,000 - 15,000; Full time

Benefits offered by this job

Dutch internship compensation

Job summary

Weven Energy, based in Delft, invites a driven student to join as Battery System Engineer internship. You will work hands-on with next-gen sodium-ion cells, running tests and helping shape the electronics and BMS architecture toward a scalable product.

You'll collaborate closely with engineers and external experts in a small, flat team that values autonomy and real ownership. The internship is at least 3 months and aligned with Dutch practice compensation.

Qualifications

• Student in battery engineering, electrical engineering, or related field.
• Strong interest in electronics and BMS development.
• Hands-on lab experience or hobbies with electronics encouraged.

Responsibilities

• Run lab tests on sodium-ion battery chemistries.
• Analyse results and translate data into design decisions.
• Support electronics and BMS architecture development.
• Collaborate with engineers and external experts.

Skills

Electronics

BMS design

PCB design

Lab testing

Education

Battery engineering or electrical engineering student

Tools

PCB Design Tools

Job description

Internship / graduation project · At least 3 months · Delft

Internship — Battery System Engineer

Help us test next-generation sodium-ion chemistries and push the electronics and BMS architecture of the Power Brick from prototype toward a scalable product.

Weven Energy

Weven Energy is a Delft-based startup building the next generation of energy systems. Our first product, the Power Brick, is a radically modular, Lego-like battery system that makes clean energy more affordable and accessible. We combine top expertise in battery technology, certification and manufacturing with a young, flat team that values high autonomy and real ownership.

The Goal

The chemistry is the enabler. The electronics and BMS are what make it a product. You will spend time in the lab running tests on novel sodium-ion cells, and preferably also help develop the electronics and BMS architecture around them.

This is a hands-on internship. You will work with real cells, real test setups, and a team that is building toward certification and series production.

What you will do

• Run lab tests on novel sodium-ion battery chemistries.
• Analyse results and help turn data into design decisions.
• Support the development of the electronics and BMS architecture.
• Work closely with engineers and external experts.

What We’re Looking For

A student in battery engineering, electrical engineering, or a related field who wants lab work and product development, not just literature reviews.

Experience or a strong interest in electronics and BMS is important. PCB design and BMS design are a big plus. Hands-on hobby, DIY or electronics projects are also a big plus — we value people who have actually built things.

You should be curious, practical, and comfortable working both independently and with the team.

Our Culture & Way of Working

We are a small, flat team with no unnecessary layers. You get real ownership of your work and short lines to the people who make decisions. We value speed, clear communication and results. You will work directly with engineers, founders and senior experts.

What We Offer

A hands-on internship at the intersection of battery chemistry, electronics and product development. You will work with next-gen sodium-ion cells and a system that is moving from prototype to production. Internship compensation in line with Dutch practice.