Job description
BTRY is a Swiss startup revolutionizing energy storage with its cutting-edge thin-film solid-state battery technology. We're on a mission to power the future of electronics with high-performance, customizable battery solutions. As we scale our technology from development toward industrial production, we are looking for a motivated intern to join our Scale-Up Team.
If you are interested in battery technology, hands-on laboratory work, and turning innovative processes into reliable and scalable solutions, this role is for you.
Key Responsibilities
As part of BTRY's Scale-Up Team, you will work closely with senior engineers and support the development, testing, and documentation of battery materials, cells, and manufacturing processes.
- Support senior engineers with laboratory experiments and scale-up activities.
- Perform electrochemical and material characterization and document the results.
- Support the planning and execution of Design of Experiments (DOE) studies.
- Collect, organize, and perform initial analysis of experimental data.
- Prepare clear experiment summaries, project reports, and presentations.
- Maintain accurate and traceable records of experiments, samples, materials, and results.
- Fabricate coin cells and prepare samples according to established procedures.
- Ensure that samples, data, equipment, and documentation are properly stored and organized.
- Support the maintenance of laboratory equipment, inventories, and standard operating procedures.
- Follow laboratory safety, quality, and housekeeping requirements.
- Contribute to the continuous improvement of experimental and scale-up workflows.
Your Profile
- Bachelor's degree or higher in Materials Science, Chemistry, Chemical Engineering, Mechanical Engineering, Electrical Engineering, or a related technical field.
- Strong interest in battery technology, manufacturing, and process scale-up.
- Comfortable performing hands-on laboratory work with attention to detail.
- Basic understanding of experimental design, data analysis, and technical documentation.
- Experience with coin-cell fabrication, electrochemical testing, or battery materials is an advantage but not required.
- Familiarity with Microsoft Office or Google Workspace; experience with data-analysis software is an advantage.
- Strong written and verbal communication skills in English.
- Organized, reliable, proactive, and comfortable working in a fast-moving startup environment.
- Able to follow established procedures while raising questions and suggesting improvements when appropriate.
Formalities
- Title: Scale-Up Engineering Intern
- Job type: Full-time internship (CHF 2,000 per month)
- Workload: 100% for 6-12 months
- Start date: As soon as possible
- Location: Dübendorf (primarily on-site, with limited hybrid flexibility depending on the activities)
Note: Women and people from minority backgrounds tend to only apply to positions where they meet 100% of the criteria. If you think you have what it takes to be a good candidate for this position, we encourage you to apply even if you don't meet all formal criteria.
Ready to shape the future of energy storage? If you are passionate about clean tech and materials innovation, we want to hear from you!
Pay & benefits
About this role
About BTRY AG
Company Overview
BTRY AG (privately held Swiss startup)
HeadquartersDübendorf, Switzerland
Founded2023
SizeApproximately 10 employees (source: linkedin.com)
What They Do
BTRY AG develops ultra-thin, fast-charging thin-film solid-state batteries characterized by a solid electrolyte layer instead of a liquid, flammable electrolyte (source: btry.ch). This technology enables an extremely low profile of about 0.1 mm, high safety, and operation across a wide temperature range from approximately -40 °C to 150 °C, making it especially suitable for demanding applications in IoT, medical technology, semiconductor industry, and consumer electronics (source: btry.ch). The batteries can be charged and discharged in around one minute, making them ideal for devices requiring short, high-power energy pulses (source: btry.ch). Manufacturing is solvent-free and uses a vacuum-based process that reduces the number of steps by about 60% compared to conventional lithium-ion batteries and is based on standard semiconductor production lines (source: btry.ch).
Projects & Track Record
Since 2022, BTRY has made remarkable progress from the lab phase to industrial production. Starting with 1 mm × 3 mm proof-of-concept cells at Empa, the company produced its first batteries on flexible metal foil substrates in 2023, followed by 10 cm × 10 cm batteries in March 2024. In August 2024, the first cells were manufactured on an industrial production line based on semiconductor manufacturing technology (source: btry.ch). Collaboration with InsightSilica since September 2026 focuses on developing solid-state batteries for the semiconductor industry, featuring batteries under 1 mm thick and operating temperatures up to 150 °C (source: btry.ch). As a spin-off from Empa and ETH Zurich, BTRY benefits from strong institutional partnerships and concentrates on scaling production at its Dübendorf site (source: btry.ch).
Recent Developments
BTRY secured an oversubscribed seed funding round of 5.7 million US dollars to accelerate the industrialization of its thin-film solid-state batteries (source: btry.ch). Additionally, the company received a non-dilutive grant of 2.2 million euros from the European Innovation Council Accelerator to support scaling production (source: btry.ch). In the 2026 Venturelab Top100 Swiss Startups ranking, BTRY placed eighth, marking its second consecutive year in the top ten (source: btry.ch). Participation in major technology and industry events such as MWC Barcelona/4YFN and Hannover Messe highlights its active market presence (source: btry.ch).
Working There
BTRY employs specialists in materials science, battery and product development, manufacturing scale-up, and business development (source: btry.ch). The workplaces are located on the Empa campus in Dübendorf, where research and development are closely integrated (source: btry.ch). Due to the company’s size, employees often work cross-functionally and support development from the lab phase through pilot production (source: btry.ch). The corporate culture is characterized by a strong research-to-industry focus and the use of established semiconductor manufacturing methods to commercialize a novel battery technology (source: btry.ch). While no formal employee benefits or compensation program is publicly documented, proximity to Empa and ETH Zurich offers an attractive innovation environment (source: btry.ch).
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See your contacts at BTRY AG on LinkedIn and tap your network when applying.
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