Captain Test & Integration

What will you do as Captain Test & Integration?
Our Battery Energy Storage Systems (BESS) are smart, scalable, and seriously powerful — but they don’t just magically work. That’s where you come in. As Captain Test & Integration, you’ll be the guardian of quality, the architect of test frameworks, the team’s go-to coach, and the bridge between deep tech and real-world performance. From RFQs to rollout, you’ll make sure we don’t just build it — we build it right, with confidence, speed, and zero nonsense. And yes — we are one badass team. We don’t do politics, bloated meetings, or bureaucracy. We get sh*t done, we have each other’s backs, and we’re ******* awesome at what we do.

• Own the testing of our BESS software and hardware across the full product lifecycle
• Create and execute reusable, flexible, well-documented test plans that make sense
• Develop and refine test assurance methods that scale with us — not against us
• Listen to your team of (currently) 5 FTE. Champion their ideas. Add your own. Push boundaries. Make them hyper effective
• Dig into root causes of hardware/software performance issues and propose solid, long-term solution
• Be the connected lead during customer specific projects — translating complex needs into clean execution
• Work directly with R&D, compliance, and product to align on one goal: delivering awesome stuff
• Contribute to technical strategy, help us stay ahead of market standards, and drive product evolution
• Make sure everything you do supports our business goals — from IP growth to customer satisfaction
• Build and nurture relationships with certifying bodies to keep our products certified and market-ready
• Dive deep into the latest EU and country-specific regulations for Battery Energy Storage Systems (BESS) to ensure our BAB products lead the way!
• Design and roll out robust test frameworks for SIL and HIL environments

What do we expect you to bring to Big Ass Battery? 
It won't surprise you but we're looking for people with positive energy! You should be pumped about joining a fast-growing company bursting with ambition. You are curious, always eager to learn, and have a knack for testing. Let’s be real — this is no junior gig. You’re experienced, independent, people-connected, and strategically sharp with relevant experience in a company that produces and ships physical products. Do you check these boxes?

• At least a Bachelor’s degree in a relevant technical field
• 8+ years in testing or integration and 3+ years in being a team leader
• Familiarity with working in sprints and with Jira
• Master of SIL/HIL, root cause analysis, and test automation
• Know your way around compliance, technical documentation, and complex systems
• Ability to take the lead without needing constant check-ins
• Analytical, adaptable, persistent, and laser-focused on the end-user experience
• You build up your team — not your ego
• You arrange regular 1:1s, quarterly team meetings (yes, with an actual agenda), and maintain a high-performance, no-BS culture
• Spot-on competency planning with a strong mix of different skill levels. Use tools like the 9-grid to map, grow, and support your team
• You don’t play favorites. You don’t do politics. You build trust, clarity, and impact
• You own all the P&C stuff too — performance reviews, vacation approvals, salary discussions — and you do it with fairness and purpose
• You thrive in an environment where “get sh*t done” isn’t a motto — it’s how we breathe

What do we have to offer you?
Besides a dynamic (yes, we also mean sometimes chaotic) and ambitious environment, we offer a job where your ideas matter and you can truly make an impact! You'll be working with energetic and passionate colleagues who are eager to share knowledge and help you grow both professionally and personally. Here’s what else you’ll receive when joining Big Ass Battery:

• A salary that reflects the experience we are looking for, which must fit in the range €5.250 ~ €5.750 gross per month
• And of course, you receive 8% holiday allowance in May and a 13th month in December
• All the tools you need to excel at your job being a phone reimbursement of €25 net and a brand-new laptop to show off your skills!
• We follow the collective labor agreement Technisch Installatiebedrijf which includes the PMT pension scheme
• Enough time to recharge your personal battery with 25 vacation days and 13 additional days off (based on a 40-hour workweek) 
• Reimbursement of travel expenses at €0,23 per kilometer

PLEASE NOTE; we are not a recognized sponsor so we are not able to hire outside of the EU for this specific position. If you don't have a European passport which enables you to work in the Netherlands we advise you to apply at a company that is a recognized sponsor, you can find this regulation at www.ind.nl.

PLEASE NOTE #2: Attention all secondment and/or recruitment agencies; we handle recruitment in-house. When we need help, we reach out to our partners who have already been selected. We consider introduced candidates without a signed assignment from Big Ass Battery as an open application. We can approach these candidates directly without the intervention of external parties and there is no payment obligation in any shape or form.

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.