About the Role 

We are seeking a Senior Propulsion Engineer to lead the design, qualification, and delivery of solid-rocket propulsion systems for our missile programs. Your expertise will blend deep technical skills with standards compliance and hands-on production knowledge to ensure that reliable, safe, and mission-critical hardware reaches the field on schedule.

At Frankenburg, you will join an exceptional team bringing together top engineering and defence expertise from across Europe. In this role, you will own the end-to-end propulsion lifecycle and turn mission requirements into high-performance propulsion solutions. If you thrive on solving complex engineering challenges and want to make a lasting impact on future aerospace capabilities — we want to hear from you.

Key Responsibilities 

• Lead the end-to-end development of solid-rocket propulsion systems from concept definition and detailed design through analysis, testing, qualification, and contract execution.

• Manage technical subcontractors by defining the scope of work, reviewing deliverables, and ensuring adherence to schedule, cost, and quality targets.

• Develop and maintain technical requirement specifications by translating mission needs into measurable performance, safety, and reliability criteria.

• Collaborate with mechanical, systems, and integration engineers to optimise propulsion vehicle interfaces, resolve trade-offs, and produce comprehensive interface control documents.

• Prepare and review technical documentation, including design reviews, test plans, risk assessments, failure mode analyses, and certification packages.

We Would Love You to Have

• Educational Background 
  Technical Degree in aerospace engineering, chemical engineering, or related field. PhD is highly preferred.

• Experience
  At least 5 years hands-on experience with solid propellant rockets or comparable propulsion technologies in a defence or aerospace environment. Extensive experience in developing, testing, and qualifying propulsion systems for defence-grade applications.

• Technical Skills
  Proven track record in propulsion system interface design, ensuring seamless integration with vehicle structures, avionics, and payloads. Deep knowledge of relevant military and industry standards, including safety regulations and Insensitive Munition requirements.

• Soft Skills
  Solution-oriented mindset, excellent communication, and exemplary organisational capability. Ability to manage multiple priorities and meet strict deadlines.

• Mission Alignment
  Strong alignment with our mission to build affordable and mass-manufacturable defence technologies — ensuring every euro spent moves us closer to our goal. 

• Security Clearance
  Willingness to undergo a background check as a condition of employment. 

Our Values

Our mission is ambitious, and it takes a team that works with the same intensity.

• Own the Mission: Mission first. Always.
  We choose impact — we focus on what moves the mission forward fastest instead of “nice-to-haves". We fix it now — when delays or problems appear, we step up, rally the right people, and solve them immediately. We keep momentum — when time matters, we stay focused and move forward without waiting for perfect conditions.

• Strive for More: Dare more. Do more. Achieve the impossible.
  We challenge the status quo — we question, test, and improve instead of accepting “the usual way.” We embrace discomfort — we step outside comfort zones and turn challenges into growth. We anticipate the future — we build solutions that scale and set higher standards each time.

• Build with Trust: Be open. Keep promises.
  We walk the talk — what we say, we do. No excuses, no exceptions. We share openly — we communicate clearly and early, even when the news is hard. We own outcomes — we admit errors quickly, fix them, and prevent them from repeating.

Ready to Make a Real Impact

Apply now! The deadline is January 12th, 2026, but we review applications and reach out to qualified candidates continuously.