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Senior Full Stack Web Developer (Python/Javascript/HTML+CSS)

Céret (France)


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 & applications collaborating with
product managers, 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
  • 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 / Fast API
  • Experience with microservice architectures
  • Advanced skills with JavaScript and top new ECMA standards
  • Proficient understanding web markup, including HTML5, CSS3
  • Understanding LESS and SASS
  • Proficient understanding of client-side scripting and JavaScript frameworks
  • 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 Golang programming
  • 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 Full Stack Python / Javascript / HTML+CSS
    ● 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€)


Emmanuel Bial
Technical Director