Castart x Our Sister

All-Round Creative


Men’s brand Castart (2018) & female counterpart Our Sister (2021) are two emerging Belgian brands with their office & combined flagship store ‘Castart x Our Sister’ in the city center of Antwerp. Both brands are born with the idea of creating garments with heartfelt textures and vibrant colors that are well-balanced. 

Castart & Our Sister share similar values but so as within a family also have their own ideologies to further grow internationally in the upcoming years. 

We are looking for an all-round creative to join our creative team of marketeers and designers. 
The position is full time and is available from mid-April. 


Duties and responsibilities

  • Designing the seasonal collections of Our Sister with guidance and support of our head of design

  • Managing the marketing team of both brands with daily support and execution of our content specialist, paid media marketeer and brand stylist 

  • Follow-up of collection processes of Our Sister from scratch to sample phase with our international suppliers 

  • Structuring your design process and managing your agenda to keep our head of design informed about the next steps  

  • Working together with our menswear designer on mutual ‘Castart x Our Sister’ projects 

  • Setting-up a seasonal marketing plan for both brands together with our strategic team 



  • A background in fashion design 

  • Familiar with graphic programs such as illustrator and InDesign 

  • Curiosity & interest on current trends and developments within the fashion industry

  • Energetic and thrive in a busy working environment

  • A willingness to grow, learn and go the extra-mile for your team

  • Passionate about fashion and working at a scale-up environment

  • Experience in leadership is a big plus but not recommended 

  • You like to connect, set new goals and work in a team



  • An interesting and challenging position in a fast-growing international company

  • An attractive salary package that will match your qualifications

  • Free new seasonal outfits 

  • A cosy and creative workspace in the heart of Antwerp

  • An exciting and busy workplace with a strong and supportive team of young colleagues 

  • The ability to evolve in your task scope in line with your interests  

Interested? Send your CV & motivation letter to


Contact: Michiel Somers