Internship - BDD Test Automatisation Framework

Your mission to graduation
We want to take our software to the next level. And that’s where you come in. Your mission? Build a kick-ass Behavior Driven Development (BDD) test automation framework that helps us push the limits of quality and reliability. This framework will drive system and integration tests for the heart of our battery systems — the embedded software. You’ll be the one laying the foundation for this framework, working with Python (using tools like Behave or pytest-bdd) and C++ (to create clever test daemons and simulate the badass hardware we build).

Mission objectives:

• Design and build a scalable, rock-solid BDD framework in Python


• Integrate test steps tightly with our embedded software — no fluff, no gaps


• Create C++ test daemons to simulate hardware components and interfaces


• Develop test scenarios that cover everything from comms protocols to fault handling to energy management


• Hook it all into our CI/CD pipelines so testing is fast and automatic


• Document the architecture, test strategy, and implementation so others can build on your work.

Technology & tooling

• Python (pytest, Behave, or similar frameworks)


• C++ (for drivers and hardware simulation


• Embedded Linux system


• CI/CD tooling


• Git version control

What do you have to bring next to Big Ass vibes?
At Big Ass Battery, we’re looking for someone who doesn’t just get their energy from the sun. We need someone charged up (pun intended) with positive energy. So, if you’re someone who thrives in fast-paced environments, who enjoys being on the shopfloor from time to time, connecting with people, and making real systems work in the real world and enjoys having a bit of fun along the way—you’ll fit right in. Here’s the ideal mix:

• You’re studying Software Engineering, Embedded Systems, Technical Computer Science or something similar (Bachelor’s level)


• You’ve got experience with Python and/or C++


• You’re curious about embedded software and test automation — maybe even obsessed


• You work independently, stay organized, and document your work like a pro


• You communicate clearly and thrive in a no-nonsense, technical team


• You have the ability to be in the office physically for 5 days a week — no working from hom during your mission

What do we have to offer you?
In addition to a lot of energy and ambition, we offer a job with room for personal input, new ideas, initiatives and entrepreneurship. Because in a fast-growing company you can really make an impact:

• A real-world graduation project that matters — with visible impact on cutting-edge tech


• A €500 monthly internship allowance — because your work has real value


• Mentorship from seasoned software and embedded engineers who are passionate about what they do


• A chance to work on truly innovative energy tech that helps shape a sustainable future


• And if you nail it technically and on a personal level? Opportunities for a permanent position on our team

About Big Ass Battery 🔋
We are Big Ass Battery; a fast-growing scale-up in the premier league of the energy transition. We build energy storage systems at the highest level: from battery cell to complete 10ft battery containers. Big Ass Battery is a Dutch company and we are located in Helmond. We didn't fit in our previous office anymore so that is why we traded up in november 2023 to our new facility of 15.000 m2 and a total surface of 41.775 m2! When you join our team, you not only contribute to the production of batteries, but you also contribute to the growth of a company with big ass ambitions. Our batteries are an important part of the solution to the current challenges we face in the energy transition. For example, you can place a Big Ass Battery at an event location or for charging electric cars. Or on a construction site where a sustainable company wants to use electric excavators and other power tools. Companies can even link a revenue model to the use of the Big Ass Battery. Agricultural companies, for example, use the Big Ass Battery for solar energy storage. In short, plenty of possibilities.