,Hey there – I’m Sarah Belanus, founder and Fractional CMO at CellSignal Scientific Marketing.

And you should probably know that I didn’t start in marketing – I started in the lab.

Before I ever touched a brand strategy or built a content campaign, I was managing research labs and navigating the world of research science. I’ve led marketing inside CROs, site networks, and health tech startups, and spent over 15 years bridging the gaps between complex science, clear communication, and compelling campaigns that capture ROI. 

That scientific foundation is exactly what makes my work different.

I don’t just understand the science – I understand how to position it. I know what sponsors are really asking for, and what your patients need to hear, even when they can’t articulate it themselves. I’m a systems thinker who’s used to being dropped into big problems and getting to clarity quickly.

And I don’t do it alone. I’m highly collaborative, often working across research, operations, and business development teams to make sure everyone’s rowing in the same direction – and that your value shows up clearly at every touchpoint.

From biotechnology and pharmaceuticals to medical devices, nutraceuticals, and cosmeceuticals, I’ve worked across the life sciences spectrum – helping teams clarify their positioning, land bigger contracts, and operationalize long-term growth.

If you’re ready for a marketing partner who speaks science and strategy, I’d love to connect.