Marketing Assistant

Optics11; Amsterdam; On-site; EUR 28,000 - 38,000; Full time

Benefits offered by this job

30 vacation days per year.

Employer pension contribution.

Fresh team lunches provided 5 times/ w

Job summary

Optics11, based in the Netherlands, is seeking a proactive Marketing Assistant to support day-to-day marketing activities for the Underwater Security portfolio. You will help deliver campaigns, maintain sales and marketing materials, and coordinate events from planning through follow-up.

You will work closely with a fast-growing global team, handling content updates, CRM data, and basic reporting, while maintaining an organised, people‑oriented and solution‑driven mindset to ensure smooth

Qualifications

• At least HBO-level education.
• At least 3 years of experience in a similar supporting role.
• Strong organizational and multitasking skills.
• Excellent proficiency in English, both written and spoken.
• Proficiency in CRM tools and Microsoft Office Suite.
• Basic knowledge of digital marketing tools.
• Experience in a fast-paced, technical environment with strong attention to detail.
• Facilitative, supportive, and solution-oriented mindset.
• Enthusiastic, flexible, and resilient under pressure.
• Ability to set priorities effectively and adapt to changing needs.
• Team player who enjoys supporting and collaborating with others.

Responsibilities

• Support the execution of marketing campaigns for our Underwater Security portfolio, including content, LinkedIn, email and website updates.
• Create and maintain marketing materials such as brochures, presentations, promotional content and event materials using approved messaging and templates.
• Coordinate conferences, trade shows and customer events, including registrations, travel, accommodation, logistics, suppliers and exhibition materials.
• Support event promotion, attendee coordination and on-site activities, including welcoming visitors and connecting prospects with the right Sales or technical colleagues.
• Manage event and campaign contacts in HubSpot, ensuring accurate data, clear next steps and timely handover to Sales.
• Keep marketing calendars, tasks and deadlines on track, coordinating inputs and approvals across internal teams and external suppliers.
• Support supplier, invoice and event expense administration and compile basic campaign and event reporting.

Skills

Organizational skills

Multitasking

CRM tools

Microsoft Office

Digital marketing tools

Attention to detail

Team player

Communication skills

Education

HBO-level education

Tools

HubSpot

Job description

We are seeking a proactive and organized professional with a strong people-oriented mindset to join our growing team as a Marketing Assistant. If you thrive in a dynamic environment, enjoy multitasking and bring structure and energy to your work; this role is for you! The Marketing Assistant plays a vital role in supporting the Marketing team in achieving business objectives. This position involves a mix of administrative, organizational, external events and customer-facing tasks to ensure smooth operations and enhanced customer experience.
Optics11 is a world leader in fiber optic sensing technology for ultra-sensitive early warning systems. From our base in the Netherlands - a global hub for high-tech innovation and maritime expertise – we are on a mission to make the world safer by protecting critical infrastructure such as sea-lanes, offshore energy assets and subsea cables from disruption. Optics11 recently closed a €17 million investment round.

About the role:

As Marketing Assistant, you will support the day-to-day execution of our Underwater Security marketing activities. You will help deliver campaigns, keep sales and marketing materials up to date, and coordinate events from preparation through follow-up.

What will you do?

• Support the execution of marketing campaigns for our Underwater Security portfolio, including content, LinkedIn, email and website updates.
• Create and maintain marketing materials such as brochures, presentations, promotional content and event materials using approved messaging and templates.
• Coordinate conferences, trade shows and customer events, including registrations, travel, accommodation, logistics, suppliers and exhibition materials.
• Support event promotion, attendee coordination and on-site activities, including welcoming visitors and connecting prospects with the right Sales or technical colleagues.
• Manage event and campaign contacts in HubSpot, ensuring accurate data, clear next steps and timely handover to Sales.
• Keep marketing calendars, tasks and deadlines on track, coordinating inputs and approvals across internal teams and external suppliers.
• Support supplier, invoice and event expense administration and compile basic campaign and event reporting.

What we offer

• The chance to work with innovative technology with real-world applications in underwater security.
• An international, fast-growing working environment.
• 30 vacation days per year.
• Employer pension contribution.
• Fresh team lunches provided 5 times/ week.

Who are you?

• You have at least an HBO-level education.
• At least 3 years of experience in a similar supporting role.
• Strong organizational and multitasking skills.
• Excellent proficiency in English, both written and spoken.
• Professional working proficiency in Dutch is an advantage.
• Proficiency in CRM tools and Microsoft Office Suite.
• Basic knowledge of digital marketing tools (e.g. social media platforms, email marketing tools).
• Experience in a fast-paced, technical environment with strong attention to detail.
• Facilitative, supportive, and solution-oriented mindset.
• Enthusiastic, flexible, and resilient under pressure.
• Ability to set priorities effectively and adapt to changing needs.
• Team player who enjoys supporting and collaborating with others.

We are seeking candidates who are already residing in the Netherlands.