Front-end Engineer

Description du poste:


Job description

Numberly is the leading independent media trading desk in France. We combine our own tech infrastructure, our machine learning algorithms and deep API integrations with the ecosystem to optimize the marketing investments and business outcomes for our clients. 

To develop and maintain our Tech products we are using different technologies : 

  • python for backend (FastAPI, Flask, Django), data engineering and infrastructure automation
  • TypeScript (VueJS) for frontend
  • Javascript for our tagging system
  • MongoDB, PostgreSQL, ScyllaDB as our most used databases
  • Kubernetes, Helm and Docker for application packaging and deployment
  • Hadoop cluster for data storage, Kafka for Data Streaming
  • Sentry and Grafana for applications monitoring

You can find more information on tech culture on our website :

What You Will Do:

As a Front-end Software Engineer, you will join the Tech Trading team to work on our main Adtech products. You will be working closely with people across media traders, engineering, product, and data teams to help develop Numberly products.   

Responsibilities will include:

  • Build, test and ship new user facing code for both internal and external applications
  • Develop our own ad serving technology (more than 25M calls per day)
  • Develop our tag technology to adapt it to a challenging ecosystem (1B calls per week)
  • Partner with other engineers and product managers to turn our vision into a concrete roadmap
  • At Numberly, we share a passion for passing on information to both our teams and clients: weekly internal talks, meetings with professionals who are experts in their field, and ongoing learning.
  • Our onboarding is fast and powerful, thanks to the "Jedi Masters" assigned to each newcomer; the "Vis ma vie" (“Live my life” in different teams); and the "Happy Meetings" (monthly internal get-togethers with all of our teams around the world to share the group's latest news).
  • We cultivate freedom of speech, which allows everyone to participate in the group's on-going development.
  • We positively impact our ecosystem through 1000mercis actions and activities that create value in the Open Internet; we contribute to the enrichment of the Open Source. 
  • Numberly is a diversity player and Gender Equal by design (WeConnect International certification and a gender equity score of 97/100).
  • Numberly offers an international environment, hosting over 30 nationalities worldwide. 
  • Other perks: offices that reflect each team, a generous library, a large fully equipped music studio, two cats, waste separation and worm composting, the ability to bring your pet, and room for bikes! In each kitchen: coffee, tea, infusions at will and also mystery lunches, yoga classes, sports classes and parties (often disguised). 
  • Possibility to be remote up to 50% of your time (to be organized as you wish) and to work up to 60 consecutive days (working days) in remote locations in Europe

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