Marketing Generalist

Summary

AQUABATTERY is looking for a Marketing Generalist to build its marketing engine from the ground up. As the first dedicated Marketing Generalist, reporting to the Chief Commercial Officer (CCO), your mission is to turn marketing into a genuine lead-generation tool that actively supports sales efforts.

Join AQUABATTERY, a pioneering climate tech startup based in the Netherlands with a mission to commercialise an affordable, safe and sustainable long duration energy storage (LDES) solution based on saltwater. Its innovative flow battery technology offers an LDES solution without relying on critical or toxic raw materials.

With fresh funding secured and its first commercial product on the horizon, this is an exciting time to become part of a growing team and contribute to building a cleaner, more resilient energy future.

In this role, you will own the brand, content, website, events and digital presence, working creatively and resourcefully with heavy use of AI to maximise impact and punch well above your weight.

What you’ll be doing

• Own and build the brand across all channels including website, content, events, digital and media
• Build a marketing engine that generates high-quality leads and supports the sales pipeline
• Create compelling, on-brand content across channels — web, social, email and other channels
• Work with and manage external agencies to deliver the marketing strategy
• Define and execute content and channel strategy, including priorities, campaigns and publishing cadence
• Measure and optimise marketing performance based on lead generation, conversion and business impact
• Leverage AI tools to maximise marketing output and efficiency with a lean team
• Plan and deliver events, conferences and industry engagement activities
• Support employer branding and recruitment through marketing campaigns and content
• Set the overall marketing strategy and manage the marketing budget
• Own external communications to build and protect the brand through tools like press releases and media appearances

Function requirements

• Around 5 years of marketing experience, ideally within the energy transition or cleantech sector
• A proven B2B marketing track record — you know how to generate qualified leads, not just impressions
• A true generalist who moves easily between strategy and hands-on execution across brand, content, digital and events
• Demonstrated ability to achieve outsized results on a limited budget
• Highly experienced and fluent with AI tools for content creation, analytics and productivity
• Start-up or scale-up experience; comfortable being a team of one and building from scratch
• A creative eye and the ability to produce compelling, brand-aligned content
• Excellent command of English and preferably Dutch

Why AQUABATTERY?

• The opportunity to provide vital support to the energy transition at the state-of-the-art ETCA facility
• A collaborative, multicultural work environment where practical observations and technical insights are valued
• A structured, performance-driven culture that supports professional growth and technical skill development
• Competitive salary plus Stock Appreciation Rights (SARs)
• Work-life balance, including 25 vacation days and flexible working arrangements
• Green pension scheme (50% employer contribution) and collective health insurance discount
• Company bike for commuting
• Regular team events and opportunities to shape the future of clean energy

About the company

AQUABATTERY is a climate-tech start-up based in the Netherlands. Its vision is to empower the transition to net-zero by providing a scalable, sustainable and safe long duration energy storage solution. The company’s technology enables the storage of electricity in saltwater and has been successfully demonstrated through several pilot installations in the Netherlands and in Italy.

Its international team reinforces an impact-focused culture every day, taking on challenges and celebrating successes together.