
Expanded program participation through strategic messaging and UX
Optimized program communications and experience to drive global growth across diverse audiences.
Justine Herlin is a Fractional CMO and Marketing Ops strategist with over a decade of experience scaling impact-driven organizations across Europe, the U.S., LATAM, and Asia. She specializes in building marketing foundations from the ground up, combining strategic clarity, lean systems, and cross-functional execution.
Justine has led growth, brand, and operations initiatives at organizations such as Mantu, Women as One, Climate-KIC, and Seedli. Her work spans sectors including consulting, education, climate innovation, and health equity. With deep experience in martech, CRM, and team building, she helps teams unlock efficiency and scale sustainably.
Originally trained in international business and marketing, Justine thrives at the intersection of structure, storytelling, and strategy. When she’s not streamlining marketing ecosystems, you’ll find her hiking, reading, tending to her garden, or hitting the gym.
Tools, tales, and takeaways worth exploring

Optimized program communications and experience to drive global growth across diverse audiences.

Make smarter event decisions with the Pre-Event Growth Toolkit, score, compare, and prep for high-ROI events that drive real business impact.

Never miss a key climate moment, sync the 2025 Climate Marketing Calendar to plan impactful, sustainability-driven campaigns all year long.
Seedli helps Seed & Series A startups, SMBs, and nonprofits in Europe and North America scale through Fractional CMO services, MarTech advisory, and sustainable marketing resources. I specialize in growth operations, GDPR-compliant tools, and ethical marketing practices.
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