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Senior Application Engineer (m/f/x)

Skeleton Technologies

Lappeenranta, South Karelia, Finland Hybrid permanent

Posted: January 7, 2026

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Quick Summary

We are seeking a talented engineer to join our team and contribute to the development of our advanced engineering products.

Job Description

Skeleton's Advanced Engineering Department is looking for a driven and experienced

Senior Application Engineer (m/f/x).

Your responsibility areas:

• Product requirements elicitation, requirements analysis, and requirements management.
• System architectural design, technology selection, and dimensioning.
• Writing and maintaining product documentation, such as datasheets, user manuals, and application notes.
• Supporting sales and commissioning.
• Contributing to standards compliance in the product development phase, and working with approval bodies (such as UL) to obtain product certifications.


Requirements:
• A degree in a technical field such as mechanical engineering, electrical engineering, energy systems, or a related discipline.
• Good understanding of electrical engineering and related physics.
• Understanding of DC/DC converter topologies and their dimensioning.
• Good communication skills, ability to converse with product development domain specialists, customers, approval and standardization bodies, and other stakeholders.
• Fluency in English, both spoken and written.
• Willingness to travel (to our different sites and customers' locations).


Benefits:
• We offer flexible working hours, with the possibility of mobile working without core working hours and sufficient freedom for your own ideas.
• A flat hierarchy culture - fostering our great working atmosphere.
• A motivating opportunity for continuous growth at Skeleton.
• An additional day off every year for your birthday.

We're not just about energy storage. We're about redefining energy for a net-zero future, and we'd love for you to be a part of our journey.

About Skeleton

Skeleton Technologies is a Global Cleantech 100 company and a technology leader in high-power energy storage for transportation, grid, automotive, and industrial applications.

For us, developing and producing the best energy storage solutions is a means to an end: helping companies to reduce CO2 emissions and save energy.

We work with some of the largest companies in the world, from automotive and industrial OEMs to truck fleet operators and aerospace prime contractors. Our products decrease CO2 emissions and fuel consumption, improve power quality, and empower wider electrification of the biggest industries globally.

Our supercapacitor and SuperBattery energy storage technologies, based on patented curved graphene, represent the biggest technological advancement in the industry in the last 20 years, and the use of this innovative material provides our products with an unparalleled advantage in power and energy density.

Skeleton Technologies is located in multiple locations: its headquarters in Tallinn (Estonia), manufacturing facilities in Markranstädt (Germany) and Varkaus (Finland), materials development in Bitterfeld-Wolfen, and several additional locations in Finland (Helsinki and Lappeenranta), as well as its first people in Toulouse (France).

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