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Build the things that build the future.

At Solstice Storage we are committed to decarbonising the behemoth that is industrial heat. We are looking for the doers, makers and visionaries of tomorrow, starting with a mechanical lead. Do you have a track record of building real things, and do you want to lead a product from first design to a working product?

We are now hiring one of our first key people: someone who will join the journey and help steer its course.


The role

As Mechanical Lead you will play a key role in turning our prototype into a product we can build, ship and install again and again. You lead the technical development from requirements to tested hardware, you stay hands-on, and you work side by side with the rest of the team and with external partners such as suppliers, research institutions and customers.


What you will do

  • Lead the technical development: requirements, concept, detailed design, prototype build, test and verification.
  • Design, analyse and iterate mechanical systems, from high-temperature structures and insulation to the interfaces between parts.
  • Own the system view: set the interfaces where electronics, controls and process needs meet the mechanical design.
  • Plan and run prototype builds and tests, both in the lab and in the field, and turn the results into design decisions.
  • Keep safety, reliability, manufacturability and compliance (such as CE and relevant design codes) in view, and keep specifications and drawings in order.
  • Select and manage suppliers, workshops and test partners.
  • Help hire and lead the engineers who join next.


Who you are

  • You are curious.
  • You have an exceptional track record of building things, and you know what happens when theory meets the shop floor.
  • You are a sharp problem solver who relies less on having the answers than on having a method for problems you haven’t met before.
  • You like being in the lab or workshop with real hardware, not only in CAD (SolidWorks, Creo, Inventor or similar, plus FEA).
  • You are a finisher with an eye for detail, who can still decide with incomplete information.
  • You have taken a physical product from idea through prototype to test, and ideally on to production or installation.
  • You have led projects, people or suppliers, formally or informally.
  • You speak fluent English. Swedish is a plus.


Nice to have

  • Experience with thermal systems, high-temperature materials or energy storage.
  • Experience from a startup, hardware scale-up or workshop environment.
  • Knowledge of CE marking, pressure equipment or industrial safety requirements.
  • You are entrepreneurial and want to shape a product and a team, not just execute a spec.


What we offer

  • A key role with ownership from day one.
  • The chance to shape the product, the team and the way we work at an early stage.
  • A small team of engineers with short decision paths, building technology that takes fossil fuels out of industrial heat.
  • Stock warrants.
  • A flat hierarchy where we value who you are.


Location: Lund/Malmö

Type: Full-time

Start: January 2027