B2B Marketing Internship

At LeydenJar Technologies, we’re on a mission to redefine the future of energy storage. Our goal is to become the world’s innovation leader in advanced battery anodes, empowering the next generation of batteries that drive progress.

Why does this matter? Because the world needs higher energy density batteries not just for better consumer electronics, but for electric vehicles, e-flight, and beyond. While the battery industry typically advances by only 3% per year, our breakthrough pure silicon anode technology delivers an improvement of up to 70% is a true game changer. Often called the “holy grail” of the battery industry, our technology unlocks new possibilities for electrification, sustainability, and resilience in global supply chains.

What we do:

• We produce pure silicon anode rolls that fit seamlessly into existing battery cell manufacturing lines, enabling customers to make a quantum leap in performance or create entirely new product categories.

• Our initial focus is on consumer electronics, with automotive applications already in development.

• By leveraging semiconductor thin-film technology (plasma deposition) and scaling it to battery anodes, we’ve overcome the long-standing challenges of silicon in batteries, delivering durability and efficiency at scale.

To meet global demand, we’re scaling up:

• Assist in drafting, scheduling, and publishing content across corporate social media channels (LinkedIn, Twitter/X, YouTube).

• Monitor social media engagement, track channel analytics, and support audience growth strategies.

• Capture on-site photos, short video clips, and updates from the Leiden and Eindhoven facilities for promotional use.

• Support the execution and preparation for major B2B industry trade shows, conferences, and exhibitions.

• Assist with event logistics, booth collateral shipping/setup, promotional merchandise management, and vendor coordination.

• Help compile post-event lead data and competitor summaries from industry gatherings.

• Conduct B2B market research and competitive benchmarking across the battery and energy storage sectors.

• Support the creation of marketing collateral, presentation decks, newsletters, and press distribution materials.

• Perform additional marketing and administrative coordination tasks as needed to support global marketing operations.

• Analyze data to provide insights for product development and marketing strategies.

• If necessary, we may require you to perform activities normally undertaken by others or to take on additional activities.

• Currently enrolled in a Bachelor’s or Master’s degree program in Marketing, Business, Engineering, or related field

• Excellent written and spoken English communication skills (English is our working language)

• Strong analytical skills with the ability to gather, analyze, and interpret data

• Excellent written and verbal communication skills

• Familiarity with Microsoft Office suite

• Working knowledge of Adobe Create Suite and Google Analytics

• Ability to work independently as well as collaboratively in a fast-paced environment

• You are eligible to complete your internship in the Netherlands

At LeydenJar we value diversity, and we provide equal opportunities to all applicants without regard to race, color, ethnicity, religion, gender, pregnancy/childbirth, age, national origin, sexual orientation, disability, etc. If there are two or more applicants of equal suitability for a certain position, LeydenJar can under circumstances decide to select applicants based on positive discrimination in full compliance with all relevant and applicable law.