Established marine businesses.

Founder & CEO

Justin
Coomber

With a love for the ocean, a keen eye for design and an entrepreneurial spirit, Justin started RainChekk in 2024. With a vision of how marketing is changing and a passion for AI, he leads every client engagement at the strategic level. From implementing work himself at the beginning, he understands the technical aspects, challenges and results the agency offers. Since then, he has built a team of 7+ across the world to deliver the results set out for every client. A clear standard for how established marine businesses should compete online.

Head of Accounts

Nerissa
Boonzaaier

Nerissa joined RainChekk in 2026, yet feels like she has been a part of the team from the beginning. With a passion for people and a performance mindset, she manages every active client relationship at RainChekk. Nerissa is the proactive connection between the rest of the team and our clients. She is the one making sure the strategy is implemented to the highest standard and gets the results the agency aims to achieve. She keeps communication clear, timelines on track, and ensures every commitment is followed through. When something is promised to a client, Nerissa is the person who makes sure it is kept.

Head of Design

Mia
Coomber

Mia has been part of RainChekk in the background helping Justin since day one. Since the agency's rapid growth, she has taken over website design projects and in-house financial responsibilities, joining the team on a full-time basis. She designs and builds every client website and brand asset for RainChekk. Every decision is made to communicate premium positioning and drive conversion, not just aesthetics. She holds the visual standard across everything clients see, from website builds to branded materials, and brings the technical execution that turns strategy into a live digital presence.