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Senior Back-end Web Developer
(Python and Golang)

Céret (France), Barcelona (Spain) or Wrocław (Poland)


The Digital Advertising industry is growing fast and becoming everyday more complex. Media publishers face many challenges at a time: growing their audience, improving UX & content quality. They need strong advertising revenue to sustain their team and efforts.

Opti Digital is the tech and strategic partner for digital media publishers. Thanks to our agile & innovative advertising solutions, we efficiently help publishers to optimize their online revenue and take the right decisions for their website monetization.

We develop modern & innovative advertising products to offer solutions for small, medium and large web publishers.


You want to know more about the AdTech industry, an everyday challenging environment? Join Opti Digital, a fast-growing company in France and Europe and let’s thrive alike!


We are looking for a candidate who is experienced, dynamic & motivated to learn about the digital advertising industry. You are solution-oriented and a well organized team player.

Your mission will be to develop Opti Digital technologies back-end applications collaborating with product managers, front-end developers and QA . We have many challenging projects to sustain our company growth and develop new business units.

Some projects you might be involved in:

  • Opti Digital’s publishers configuration & analytics management tools
  • Opti Digital’s market prices predictive engine
  • Real time reporting/analytics system
  • Real time bidding engine for our innovative ad templates


  • Understand our business and our business needs
  • Analyze product functional specifications and document and propose robust technical solutions
  • Collaborate with the product managers, the technical director and other developers to ensure an efficient and productive synergy
  • Carry out projects’ back-end developments
  • Document implemented technical solutions
  • Monitor product performance and results, suggest improvements


  • Experience with Python and frameworks like Flask

  • Experience with Golang programming

  • Experience with microservice architectures

  • You love OOP and writing clean code along standards

  • You like building and using REST API

  • You are fluent in SQL and relational database basic operations

  • You are familiar with:  Git, JIRA, REST API, Microservices, Docker, MySQL

  • Proactivity and attention to details

  • Positive attitude and good communication

  • Fluent in written and spoken English for team work


  • Experience with high traffic server side applications
  • Experience with Google Cloud, Google Ad Manager, Google Data Studio
  • Experience with devops tasks, Continuous Integration & deployment
  • Experience with Vue.js
  • Experience with Docker, Kubernetes
  • Experience with Artificial Intelligence cloud solutions
  • You are interested in and have some experience in big data and ETL


  • Git / Github

  • Integration tests

  • Agile, Scrumban

  • Notion

  • REST API, microservices

  • Docker

  • Python, Golang, Javascript, Vue.js, Material Design

  • Google Cloud: BigQuery, MySQL, App Engine, Kubernetes

  • Google Ad Manager

  • Google Data Studio


  • 5+ years of experience in development with Python frameworks
  • Computer sciences degree

What we offer

  • Indefinite contract and full time job
  • Competitive salary
  • Flexible work organization / remote work
  • In-house trainings and hack days 
  • International team (offices in Barcelona, France and Poland)
  • Team buildings and internal events
  • Private health insurance
  • Fitness club membership
  • Employee referral bonus (1000€)


Stephane Richet
Talent Acquisition Manager