Posted 1 month ago  

Senior Back-end Engineer

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Our mission

We are KMTX, a fast growing AdTech company building the Ad Platform of the Open Web. We are working to provide the main advertising platform of the Open Web making it simple for anyone to run effective campaigns online. We believe this is the only way of preserving and improving the state of the Internet by making it open and fair. Were targeting a $200B market.

The problem were working on

As of today, Open Webadvertising is a messwith unnecessary complexity, opacity, low respect of user privacy and poor performances for advertisers as well as publishers. This is whatallowsWalled Gardens (Google, Facebook, ) to dominate the online advertising marketas they provide simple & efficient advertising platforms. A simple & efficient ad platform is necessary tovalue the Open Web, promote free access to information and fight the duopoly.

Our solution and achievements

Since 2017, weve worked on the hardest part ofcreating the ad platform of the Open Web. Anautomated set of tools and technologies to buy advertisingin real time while deliveringstrong performancesfor advertisers.

Weve proved that our approach works with over200 brandson more than1500 campaignsand managed to consistently beat every advertising platform on the market. This success helped KMTX grow very quickly to an8 figures revenue.

We are now building and deploying a self-served platform that aims to be the Facebook Ads of the Open Web. It allows advertisers to launch campaigns in less than 5 minutes on any inventory (Web, Apps, TV, ...) and deliver strong results for their brand.Simple & Efficient. This platform will be available for advertisers inEurope and North America.

Job description

Your key missions :

  • top expertise in your field, and ability to stay at the front of innovation
  • ability to (co-)define and deliver a technical vision
  • proven track record of delivering high scale products
  • successful experience in mentoring junior engineers
  • ability to communicate on your topics (blog, meetup, conf...)
  • proven experience dealing with low latency & high scale
  • mandatory xp in multiple language

Who are you

  • You are rigorous, autonomous and result oriented and have strong organizational skills
  • Within the last 2 years you worked as a back-end or full-stack developer
  • You have already designed, developed and deployed cloud services
  • You have great knowledge in Nodejs and databases (both SQL and NoSQL),Golang and Python are a plus
  • You have knowledge in network programming (TCP/IP, HTTP)
  • Experience in digital advertising company or on a self-serve platformis a plus


  • Sane work environment built on trust, delivery and mentoring
  • Attractive salary and remote friendly
  • Dedicated conferences and training budget
  • Central Paris office
  • Fully equipped workstation
  • Restaurant Tickets (Swile)
  • Health Insurance (Alan)
  • Gym subscription (Gymlib)
  • Regular team building events
  • Annual company retreat
  • Partnership with kindergardens


Interview Process

    • Phone Phone screening
    • In-depth tech interview
    • Culture Fit meeting
    • Founder(s) / VP meeting
  • Decision and offer