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Senior Mechanical Engineer Cell Design (m/f/x)

Skeleton Technologies

Markranstädt, Saxony, Germany Hybrid permanent

Posted: October 29, 2025

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Job Description

Skeleton's Supercapacitor Data Centers team is looking for a driven

Senior Mechanical Engineer Cell Design

with the vision to match our ambition.

Your tasks in the net zero journey:

• Work together with cell (and SuperBattery) team engineers to design/improve/manage supercapacitor cells.
• Create, manage and keep up to date the design documentation (models, drawings, documents, risk assessments)
• Create deliverables according to the development process.
• Co-operation with industrial engineers on the stable manufacturing of the design.
• Reporting to and working together with mechanical engineering team on the design solutions
• Find design solutions which can be used to hit product target requirements.
• Build prototypes and perform testing to validate design solutions.
• Instruct and supervise the manufacturing of our products if needed.
• Communicate with component suppliers and procurement team to find suitable solutions.
• Co-operation with procurement team to ensure that design meets target cost.


Requirements:
We don’t expect to master it all. At Skeleton, you’ll have the support of the team and we work together to achieve our goals. However, there are requirements you should be able to fulfill to succeed in this role:

• Successfully completed Bachelors or Masters' degree studies in mechanical engineering field.
• At least 5 of professional experience as a design engineer.
• Prior experience with battery Cell design (preferably Cylindrical cells), or other relations with battery industry.
• Experience with mass production, manufacturability.
• Well experienced with SolidWorks.
• Very good modelling skills.
• Great at creating and reading technical drawings.
• Understanding of cell design and relevant electrical parameters for cell design.
• Capability of using hand- and power tools.
• High proficiency in technical writing
• Understanding of quality tools (DFMEA, Significant characteristics, etc.)
• Have fluent English language skills, German would be a huge advantage.
• Bringing forward interpersonal skills of independency, resourcefulness, time management, internal drive.
• As a personality, you are open and keen communicator, can explain your thought process and able to bring forward new ideas but also receive constructive criticisism.


Benefits:
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.

• 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.
• Use the training budget to expand your knowledge and competencies.
• Helpfulness among colleagues is not just an empty phrase but a practice every day.
• A motivating opportunity for continuous growth at Skeleton.
• An additional day off every year for your birthday.
• Use our Edenred Voucher Card for your shopping experience with a top-up every month.
• We offer a company pension scheme for your financial security in the future.
• Be active & participate in our internal sports challenges (SkelFitness).
• We have a pet-friendly office.
• We celebrate our successes with Team Events, Summer & New Year’s parties, and other initiatives!

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: headquarters in Tallinn (Estonia), manufacturing in Großröhrsdorf, materials development in Bitterfeld-Wolfen, several locations in Finland, and an office in Berlin. Currently, we are about to open the largest supercapacitor factory in the world in the Leipzig area, Germany. Further expansion plans will shortly lead Skeleton to France.

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