Fractional chief marketing officer (cmo) - (sustainability & energy sector)

Company Description

Hex Ergy is a cleantech startup building a Saa S platform that transforms a simple signature into real energy savings for communities. Through the energy community model, Hex Ergy enables citizens, businesses, and institutions to collectively produce, share, and benefit from renewable energy. Our platform automates the entire lifecycle of energy communities from design and regulatory compliance to implementation and ongoing management, through dedicated software modules.

Today, Hex Ergy supports 600+ energy community projects across Italy, the Netherlands, and Colombia, and is actively expanding into the United States, Spain, France, Germany, and Portugal.

Role Description

We are seeking a Fractional Chief Marketing Officer (CMO) who is deeply passionate about sustainability and the energy transition, and who wants to apply senior marketing leadership to generate real-world impact. You will own marketing strategy and key decisions, lead our marketing agency, manage the internal marketing team, and ensure that Hex Ergy's story consistently delivers the WOW Effect across markets, audiences, and channels. This is a strategic, high-impact role focused on purpose-driven growth.

what you will do

Own and define Hex Ergy's global marketing strategy, with sustainability and energy transition at its core

Make strategic marketing decisions and set clear priorities

Lead, challenge, and coordinate the external marketing agency

Manage and mentor the internal marketing team, fostering purpose, clarity, and performance

Translate complex energy concepts into clear, inspiring narratives for citizens and institutions

Design and guide multi-country go-to-market strategies

Oversee citizen-facing (B2 C) acquisition and engagement

Guide B2 B, institutional, and partner marketing positioning

Define KPIs that balance growth, trust, and impact

Ensure consistent messaging that delivers the WOW Effect across all markets

Support investor, institutional, and strategic communications Who you are

10+ years of experience in senior marketing leadership roles

5+ years in cleantech, energy, climate tech, or B2 B Saa S

Proven experience managing both B2 C and B2 B marketing strategies

Strong track record in international marketing for growing companies

Genuinely passionate about sustainability and the energy transition

Experience leading agencies and internal teams

Comfortable operating in regulated and multi-country environments

Strategic, decisive, and purpose-driven What we offer

Fractional, part-time engagement (~8 hours per week)

Fully remote

Strategic leadership with focused, high-impact involvement

The opportunity to shape how sustainability is communicated globally

Direct influence on international expansion decisions

Collaboration with founders who believe deeply in impact

Autonomy, trust, and a clearly defined scope