You are caring, well-organized, self-driven, creative and fun? You want to have an impact in a fast-growing company? If so, read on.

We're on the lookout for an outstanding individual to be our Office Manager at Semetis. You will be responsible for keeping the office running smoothly and overseeing administrative support. You will work hand in hand with our Business and Operations Director who will coach you on the day to day job.

This job has a lot of variety. You'll find yourself doing a wide range of things, from regular office & HR duties to organizing, planning activities, and keeping everyone connected. As a key member of our team, you'll need to be good at managing your own time and tasks to keep our office procedures running smoothly. You'll support our managers and specialists, helping to create a workplace where everyone is happy and productive.


Your responsibilities will be articulated around 3 pillars: Human Resources, Office & Events.

  • Administer Payroll (SDWorx) and manage employee benefits.
  • Serve as the primary point of contact for HR inquiries.
  • Facilitate the welcoming and departure processes for Semetis team members (handling material, IT, access, etc.).
  • Contribute to the onboarding of new hires and coordinate recruitment interviews.
  • Be on the lookout to launch new well-being initiatives from A to Z.
  • Provide logistical support for the Semetis Game, our annual recruitment campaign.
Office Management
  • Act as the liaison with other agencies in our building on office-related matters.
  • Evaluate and enhance the Semetis office experience.
  • Manage company communications, including email and website content.
  • Develop and enforce office guidelines, manage mail, and oversee office budgets and supplies.
  • Maintain relationships with suppliers and coordinate with the IT department to manage tech resources.
  • Coordinate the publication of articles on the website
  • Lead our event team in the organization of our regular team buildings (afterworks, sport activities, etc.) and management of the budget
  • Lead our impact team in the organization of our impactful activities (blood donation, street cleaning, etc.) and management of the budget
  • Logistical lead for the Semetis annual trip (destinations, hotels, logistics, etc.)
There is also room for:
  • Assisting your colleagues in digital projects
  • Assisting our Business & Operations Director on HR topics
  • Taking care of the community management on our platforms (Tiktok, Instagram & LinkedIn)


  • A bachelor degree or equivalent
  • Demonstrated experience (1 to 3 years) as office manager, human resource assistant or project coordinator,
  • Strong sense of discretion and professionalism,
  • Autonomous and excellent organizational skills (handle several projects at once),
  • Excellent written and communication skills,
  • Patient, flexible and rigorous (eye for details),
  • Can-do mentality, positive and trusted attitude,
  • Ability to deliver results under pressure in a fast paced environment,
  • Strong positive and team player attitude,
  • Willingness to learn fast and continuously,
  • Fluent in English and Dutch or French.
  • At ease with technology (Excel, Powerpoint, Google suite, Email management, …)

What we offer

  • An engaging and dynamic work environment that values teamwork and impact
  • Real responsibilities
  • An attractive package with cool benefits
  • Tremendous colleagues
  • Possibility of part-time (⅘) or Full time
  • Interim contract for 6 months, with possibility of a CDI in the future

About Semetis

Semetis is a data-driven media agency, Belgian market leader in Digital Advertising & Digital Business Intelligence. The company was set up in 2009 by the first employees of Google Belgium. In 2015 Semetis joined the international network of communication agencies, Omnicom Group.

Brand Promise

We, Semetissians, question the status quo. We explore solutions and innovations driving greater business results. We do this through a pragmatic and data-driven approach.


We, Semetissians, help businesses and their people grow by driving digital marketing activities that effectively connect them to their target audiences through our streamlined processes and pragmatic, business-oriented approach.


Our purpose is to help people and companies develop their full potential in key digital areas, so that they can seamlessly connect to their target audience and grow.

Brand Values

Our core brand values are the beliefs that we, as a company, stand for. They serve as the compass that guides our brand story, actions, behaviors, and decision-making process. Our values are aligned with our brand’s overarching mission and vision. Our pillars are the guiding principles for our brand.

Growth: At Semetis, we create a culture and environment of growing, failing and belonging to give everyone the opportunity to develop while reaching their full potential, both personally and as a team

Exploration: At Semetis, we continuously explore new solutions to bring business growth to our clients and drive innovation in a suitable and sustainable fashion.

Energy: At Semetis, we use our drive, curiosity and commitment to energize, engage and inspire our colleagues and our clients. We question the status quo.

Involvement: At Semetis, we embrace challenges, feel responsible and take ownership of projects but also day-to-day improvements that make the company a better place.

We are Semetissians

We are curious, energetic, honest, humble and also confident, critical, committed and agile. We are business-minded experts who leverage digital marketing solutions to empower our client’s team and help our client’s business grow.

We are Semetissians. We strive for excellence and growth. Within our industry we are considered as thought leaders. For our people, Semetissians, we are considered as a business school that develops top professionals. Semetissians have a strong work ethic, they are proud of their achievements and they have fun at work.

Have a look at our LinkedIn, Instagram, TikTok and YouTube pages to learn more about the world of the Semetissian.


For immediate consideration, please send your CV and motivation letter to This email address is being protected from spambots. You need JavaScript enabled to view it. or fill in the application form below.


Get in touch

Semetis | Rue de l'Escaut 122, 1080 Brussels - Belgium

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