New comment by evaneykelen in "Ask HN: Who is hiring? (November 2026)"

Return | HYBRID | Chief Information Security Officer (CISO) | Full-time

Return (https://return.energy) is hiring a CISO. We build and operate industrial-size Battery Energy Storage Systems. This is critical energy infrastructure, and it needs one owner for security and compliance.

We operate in the Netherlands, Germany, Belgium, and Spain. You will make a measurable impact on the energy transition at country level. Return recently raised €300M to support its growth.

We employ more than 150 people. The technical team consists of 24 people. Our platform automates work in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service. It runs on EU cloud and on compute at the battery sites. We run the fleet from two operations centers in the Netherlands.

In our first four years we built the platforms and passed the important audits. Now we need one person to own the whole security picture. Today the work sits with the CTO, the platform team, and the Head of OT. That does not scale.

You report to the CTO and have direct access to the management board.

Apply via https://jobs.polymer.co/return/41723