Welcome To Our Career Site

About Lightium
Founded in 2023, Lightium is a fast-growing Swiss startup on a mission to enable ultra-high data transmission rates for our connected world. We are at the forefront of the next wave of photonic innovation, tackling the urgent challenges data centers face, such as soaring data volumes and rising energy demands, using our proprietary Thin-Film Lithium Niobate (TFLN) integrated photonic platform.
Our technology dramatically improves transmission speeds while cutting energy consumption, driving the future of AI, quantum computing, telecom, and beyond.
At Lightium, we thrive on innovation, excellence, and a shared drive to solve big problems. Join us if you're excited to work with result-oriented minds, contribute to transformative technologies, and make a tangible impact on tomorrow's world.
Dare to Lead the Charge in the Next Generation of Integrated Photonics?
Workplace & Culture
We Get Things Done — We are ambitious, constantly pushing the boundaries of what's possible. We don't just dream; we create. We don't just imagine; we achieve. At Lightium, the outcome matters more than the hours spent in the office. We reward milestones and results, not time or status.
We Embrace Collaboration — No great achievement was ever born in isolation. Our journey is one of collective effort, grounded in trust, transparency, and mutual respect. By fostering open dialogue, speaking up for one another, and valuing diverse perspectives, we create the kind of synergy that drives innovation and positive change.
We Love Being Wrong — We thrive on challenging the status quo and aren’t afraid to be wrong — because every mistake is an opportunity to learn and grow. Our passion for photonics and its potential to change the world drives us to evolve continuously, owning our failures as much as our successes.
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Build Tech from the Ground Up
Become a key player in an early-phase startup, where your work will make a real impact. You will have the unique opportunity to create, grow, and develop your professional skills at a fast pace.
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Be Part of the Story
Get a competitive compensation and benefits package, including an employee stock option plan (ESOP), so Lightium's success becomes yours.
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Enjoy the Tech Campus Life
Situated in the heart of the Bio-Technopark, 10 minutes away from Zürich city centre, you'll be surrounded by other tech startups, gyms, restaurants, cafés, and even a boulder hall to let some steam off.





Zürich
About Lightium AG
Just as silicon chips reshaped electronics, Photonic Integrated Circuits (PICs) are poised to revolutionize how we process, store, and transmit data. As data creation and consumption explode, transmission speeds struggle to keep up.
We are proud to be Europe’s first company to offer a high-volume, production-grade foundry platform based on our proprietary thin-film lithium niobate (TFLN) technology. This material outperforms traditional silicon photonics in speed, power efficiency, and overall performance.
We are positioned at the forefront of photonics, enabling ultra-high speeds for our connected world.
Already working at Lightium AG?
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