Marketing Lead, Content & Brand

About the role

Lightium, a deep-tech startup pioneering photonic integrated circuits based on thin-film lithium niobate, is hiring its first Marketing Lead. Reporting to the CRO, you will build the company's content engine from scratch, covering branding, visuals, animation, website and social media. You will use Claude and other AI tools to speed up production while ensuring every claim is correct.

Key responsibilities

• Own the website frontend and social channels (LinkedIn, YouTube, etc.), including content, cadence, updates and SEO, and work with external developers and DevOps as needed.
• Build and run AI-assisted workflows (e.g., Claude projects) that produce visuals and documents consistently with brand guidelines, documenting prompts and templates.
• Design roll-ups, booth graphics, flyers, datasheets and social visuals with Canva and the Adobe suite, and produce short explainer animations.
• Run a review loop with R&D on every technical claim, figure and animation, and keep a source-of-truth sheet of approved specifications.
• Own the event calendar, book events, prepare booth materials and manage booth presence at trade shows.
• Draft press releases, manage media relationships and plan C-level interviews, talks and podcasts.
• Support investor relations with monthly updates and quarterly newsletters, and publish corporate and internal communications.
• Run the content calendar, track what brings in interest, and nurture relationships with animation studios, designers, copywriters, photographers and print suppliers.

Required profile

• Education or training in visual arts, or an equivalent portfolio; writing for a technical journal is a strong plus.
• 2-5 years in B2B marketing, content or communications, ideally in deep tech, semiconductors or photonics.
• Fluency in English; German or French is a plus.
• Hands-on daily use of Claude and other generative AI tools, treating AI output as a draft and catching errors before publication.
• Ability to take a brief to print-ready files and to tell technical stories on the web and social media.

Required skills

• Canva and the Adobe Creative Suite (Illustrator, InDesign, Photoshop); motion or video editing is a plus.
• Copywriting, storytelling and photography skills are a strong plus.

What we offer

• A chance to build the company's first marketing and content function from the ground up.
• Competitive compensation and benefits, including an employee stock option plan (ESOP).
• The opportunity to grow professionally in an early-stage startup.