Manager, Development Test

About the role

Castelion is rapidly developing and delivering advanced defense systems at a time when execution and technical excellence matter more than ever. We move fast, focus hard, and build real capability—not just concepts. This is a rare opportunity to join at an early stage where your work will directly shape critical systems, influence major technical decisions, and have immediate real-world impact.

The Manager, Development Test leads R&D testing in a fast-paced development environment to reduce hardware development time and increase reliability. You own the test strategy, build/operate test systems, lead a growing team, and drive clear visibility into testing progress across the company.

Responsibilities

• Build, lead, and mentor a high-performing team of 4-7 engineers and technicians.
• Design, build, train and operate test systems from concept through execution (01 development).
• Own the R&D development test strategy across structural, dynamic, functional, and environmental domains.
• Maintain a daily updated companywide dashboard with visibility into testing progress and priorities to balance speed, rigor, and resources.
• Drive tests to failure and identify primary and secondary failure modes.
• Manage multiple parallel test campaigns with effective prioritization and ownership.
• Maintain and improve test infrastructure, lab capabilities, and external resources.
• Set a culture and practice of safety