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Back-end developer - Amsterdam

Due to the growth of Massarius we are looking for an analytical and eager Back end Developer to grow our BigQuery databases propositions where we aggregate, analyse and distribute advertising data, using Python, SQL, API and continue developing our ML products.


Apart from optimizing the ad stack of our publishers, our activities include BI and Dashboarding. We collect website advertising SSP data and aggregate this into a wide range of BI and Analytics dashboards. For these automated processes we use Python. Our dashboarding includes advertiser data, advertiser verticals, revenue data and placement data. We use Machine Learning to increase performance.
We are looking for a back-end developer to maintain and further develop our advanced ETL and BigQuery Databases.

Gevraagd wordt

You have a proactive role and will be responsible for:
Database design and ETL;
Automate performance reports and analyses with the BI team;
Scaling the BI and ML products.

Our ideal candidate has a university level of work and thinking with 2 to 5 years of relevant work experience, with at least sevens for science subjects. We request the following:

A curious, critical self-starter with an analytical mind;
Python (2+ years);
DAG & Workflows (computational);
Databases (SQL, bigquery/ AWS) (SQL, Google BigQuery/Amazon Redshift);
Storage and computing API's (unification of resources);
Desire to learn and explore;
Introvert or Extravert doesn’t matter: you are clear in your written communication;
Currently there are no positions for applicants without EU passport.

Geboden wordt

Massarius offers you a market-based salary and very different responsibilities. Your next learning curve is requested and supported by very experienced professionals. You have the freedom to add your own input in projects and get the chance to work with new tech and frameworks.
In addition, you will be able to see the results of your work directly, because you can move to production when you want. The working atmosphere is characterised as open, direct, involved and result-oriented in a beautiful informal work environment in the heart of Amsterdam: 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. TheNextWeb, Pathé,, DeSpeld, AjaxShowtime, AT5, Periodista Digital, El Espanol and Delivery Media.

Meer over deze werkgever

Hoe nu verder

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Bas Martena
050 - 2101001
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