Material Development Engineer

Do you want your materials expertise to directly influence industrial production, sustainability, and the energy transition? Are you motivated by experimenting, optimizing, and understanding how materials behave in real processes - not just on paper?

At Midsummer, we are looking for a Materials Engineer who wants to work hands-on with process development for input material to thin film solar cells and push material performance from raw input to finished product.

About the role

As a Materials Engineer at Midsummer, you will work with powder processing, sintering and testing of sputter targets, with a strong focus on waste reduction and circularity. You will take care of the equipment and, if needed, improve it, and communicate with suppliers and collaboration partners.

You will be involved in the full materials workflow - from raw material selection and preparation to compaction, processing, characterization, and implementation in production. The work is experimental and iterative, with freedom to design tests, analyze results, and define next steps.

The role combines hands‑on laboratory and pilot‑scale work, materials characterization, and data analysis, always with the goal of creating robust, scalable processes. You will collaborate closely with technicians, operators, production engineers, and innovation engineers. Travel may occur within Sweden and internationally.

Main tasks

Develop and refine materials and processes for thin‑film solar cell manufacturing, including design and execution of experiments tied to production challenges

Maintain and adapt production equipment to ensure stable processing and improved material yield.

Perform risk analyses to ensure personal and environmental safety

Maintain and develop supplier contacts including pricing, quality, lead times and ESG compliance, and collaborate with external research partners and suppliers

Characterize materials using techniques such as SEM, XRD, and other relevant tools, analyze data, and ident