Mechanical Engineer
Frost Unmanned AB · Stenungsund · Tills vidare
Frost Unmanned AB is hiring a **Mechanical Engineer** to design and size the composite structure of a high-speed strike UAV. Based in Stora Höga, Stenungsund, this is a full-time, **on-site position** where the engineer takes complete ownership of the airframe, including the wings, fuselage, load paths, joints, and field assembly. Responsibilities span concept design through production drawings in CAD, laminate layup, ply orientation, hand calculations, first-pass FEA, and reviewing results from external simulation partners. The work also involves design for manufacturing, prototyping, flight testing, and integrating payloads, propulsion, fuel systems, and launcher interfaces while managing weight and centre of gravity. Candidates must hold a degree in Aerospace or Mechanical Engineering, or equivalent experience. **Expert CAD skills** for complex lightweight structures are the primary selection priority, combined with hands-on experience designing and sizing composite structures and familiarity with airframes from professional work or serious personal projects. Applicants must have a solid grasp of aerodynamic and structural loads and be eligible to pass Swedish security vetting. Prior experience taking composites into series production, defense or aerospace program experience, building and flying fixed-wing RC aircraft, or working with fuel and launch systems are advantageous. Shortlisted applicants complete a short paid CAD task.
Design and size the composite airframe of a high-speed strike UAV
At Frost Unmanned, you will design the composite structure of our fixed-wing UAV in CAD and size it yourself, from first concept to a rugged, field-ready aircraft. You will own the airframe: wings, fuselage, load paths, joints and how it all comes apart and goes together in the field. You will have real influence over design decisions from day one.
Frost Unmanned develops sovereign unmanned systems for defense and government customers: high-speed fixed-wing strike UAVs and unmanned surface vessels. We are a small team in Stora Höga, Stenungsund, moving from development into serial delivery.
What you will do
- Design airframe structures and assemblies in CAD, from concept to production drawings
- Size composite structures yourself: laminate layup, ply orientation, joints and inserts, with hand calculations and first-pass FEA
- Set structural and aerodynamic requirements, and review and challenge results from our external simulation partners
- Design for manufacturing: moulds, layup, bonding and tolerances that subcontractors can build to
- Integrate propulsion, fuel system, payload and the pneumatic launcher interface into the airframe, with control of weight and CG
- Design for field assembly: fast, robust and doable in the cold with gloves on
- Take designs through prototyping, testing and production
What we are looking for
- Expert CAD skills for complex lightweight structures and assemblies. This is the most important skill for the role
- Hands-on experience designing and sizing composite structures in real projects
- Experience with aircraft, UAVs or other airframes, professionally or in serious own projects
- Solid understanding of aerodynamic and structural loads
- Degree in Aerospace or Mechanical Engineering, or equivalent experience
- Eligible to pass Swedish security vetting
It is a plus if you have
- Taken a composite structure from design to series production
- Experience from defense or aerospace programs
- Built and flown your own fixed-wing RC aircraft or UAVs
- Worked with fuel systems, air intakes or launch systems
Why join us
- Ownership of a complete airframe, not a small part of a large program
- Your design goes from CAD to flight test in weeks, not years
- Short decision paths and direct access to company leadership
- A small team where everyone works on site, together, every day
- Competitive conditions and room to grow as the company scales
How to apply
Send your CV and a few lines about an airframe or composite part you have designed. Portfolio and CAD examples are strongly encouraged. Shortlisted candidates will do a short paid CAD task. We welcome applicants from across the EU and review applications on an ongoing basis.
Location: Stora Höga, Stenungsund Employment type: Full-time, on-site
Vi söker en flygplanskonstruktör med erfarenhet av kompositer, hållfasthet och CAD. Ansökningar på svenska är välkomna.
Frost Unmanned is an equal opportunity employer. We welcome applicants regardless of gender, ethnicity, age, disability, sexual orientation or background.
Öppen för alla Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov.