Medior Front-end developer at Massarius!

Due to growth of Massarius we are looking for a JavaScript developer to scale our advertising technology stack. This JavaScript developer will focus on advanced Prebid.js implementations into websites and design Advertising Technology configurations with publishers.


You start your day by checking if there are any monitoring alerts that need your immediate attention.

After, you are actively involved in a daily stand-up with team members and offer or ask help on certain topics if needed. You functionally discuss performance with the product team or customers and translate requirements into suitable adtech solutions.

You design the best possible AdTech Stack for publishers and experiment with open source Prebid.js.

You have a proactive role and will be responsible for

  • Building, deploying, maintaining and optimising ad tech infrastructure
  • Designing the best possible ad stack for new websites in the Massarius network;
  • Troubleshooting issues on existing sites.

Gevraagd wordt

  • At least 1 year working experience as a front-end developer;
  • Clear in your written and verbal communication;
  • Skilled in basic JavaScript and experience with HTML, CSS, jQuery, PHP and Python;
  • Experienced in buidling and deploying IT infrastructure;
  • Accurate.

Geboden wordt

Massarius offers you a market-based salary and a diversity of responsibilities. The learning curve you go through is supported by the very experienced professionals on the team. The working atmosphere is open, direct and result-oriented in an informal work environment in the center of the Jordaan.


Massarius is a Publisher Trading Desk. We help Publishers (owners of websites and apps) to sell their advertising space on their website. This space is sold through an programmatic auction, where an advertiser can bid on the available advertising space, and the highest bidding advertiser wins the adspace, also known as Programmatic Trading.

Massarius was founded in 2012, is growing 30%-40% YoY and we pop-up in many Fast Growing lists like FD Gazellen, Financial Times, NL Top 250! The offices in the center of Amsterdam and Madrid have 15 employees. Clients are Dutch and Spanish news and commerce sites., Pathé,, DeSpeld, AjaxShowtime, AT5 / Periodista Digital, El Espanol and Delivery Media.

Meer over deze werkgever

Hoe nu verder

Ben jij geïnteresseerd in bovenstaand profiel? Massarius ziet graag jouw sollicitatie tegemoet! Door middel van het klikken op de solliciteerbutton kom je in een overzichtelijk sollicitatiescherm waar je met jouw CV, LinkedIn profiel of onze CV bouwer kan reageren op de vacature van Medior Front-end developer at Massarius!.

Heb je vragen?

Edwin Brongers
050 - 2101001
Mail ons
Laat een terugbelverzoek achter

Meer weten?

Edwin Brongers
050 - 2101001
... of we bellen jou


Nog geen vacatures op de shortlist