Backend Technical Expert - Payment team

Paris, IDF, FranceFull-time

Company Description

We are music and tech fans hailing from all over the globe, working to make Deezer the most personal music streaming service. From data scientists to tech experts, artists & labels specialists to marketers, and even in-house music editors, our team is spreading the love for music to over 180 countries. Supporting local and international artists and bringing them closer to their fans is our mission - we believe music is about diversity, multiculturalism and togetherness.

Ready to join the team? We're all ears.

Job Description

How about you?

We are looking for a Backend Technical Expert to join the Payment team and take it to the next level. The position consists of 3 main missions:

  • as a Stack Expert, you will mentor and help Backend Engineers to grow their technical expertise and drive team’s adoption of stack standards
  • as a Technical Lead, you will be the bridge between the Backend’s Community Of Practices and your team, to represent it, while ensuring the stack’s projects are not left behind
  • as an Individual Contributor, you will work on challenging projects, as part of the Payment team, which objective is to be Deezer’s billing service, allowing the processing of millions of payments each month, in a reliable and smooth way

What you will do:

By joining Deezer and the Payment team, you will:

  • Work on Deezer's financial backbone: the Payment Engine, at the Core of Deezer’s business model and on the critical path to its success
  • Integrate new payment solutions, design and build new features related to fraud management, and other exciting projects that support the company’s objectives
  • Evolve CI/CD and deployment processes to improve team efficiency while maintaining a high level of security & quality
  • Collaborate with Business, Product, and other engineers to continuously improve the current platform and build the vision of the future one  
  • Build the technical stack’s vision / code standards along with other stack Leads and evangelize them within teams 
  • Drive initiatives to improve technical architecture and team efficiency, while ensuring their purpose & effects and well understood
  • Support Engineering Managers in growing technical expertise and fostering knowledge sharing within teams


What we are looking for:

  • You are open-minded, you love to give your opinion and to listen to the ideas of your colleagues
  • You want to share things with your colleagues and participate in the team's life with your good mood
  • You are proactive in identifying opportunities to improve team’s efficiency by adopting new technologies, programming languages, tools, or architecture principles
  • You are not afraid of working on both homemade frameworks and industry ones
  • You have previous experience in transforming a monolithic architecture to Service-oriented one
  • You are DevOps-minded and like to build and maintain a CI/CD, with a proven experience on Docker & Kubernetes
  • Knowledge of GO, Rust, GraphQL, or Event Sourcing architecture is a big plus


  • 5+ years of experience in building high-traffic applications using PHP
  • Strong understanding of Object-Oriented Programming, SOLID principles, and architecture in a Backend environment
  • Experience in working on large and complex code bases at scale
  • Proven experience in building and maintaining high-traffic applications in production
  • A mindset focused on code performance & quality
  • Confidence with unit and functional testing. Experience with TDD is a plus

Soft skills:

  • Good communication skills and the capacity to adapt to non-technical interlocutors
  • At ease in teamwork, familiar with agile methodology and pair-programming
  • Autonomous and rigorous behavior, committed to achieving goals
  • Ability to learn, to be creative and innovative when facing challenges
  • Fluent in writing well-documented procedures and expressing opinions using English

Additional Information

Life @ Deezer HQ

  • Start-up environment with an at home vibe and outdoor space
  • Highly motivated and product-focused people ready to drive innovation
  • Thursday drinks & seasonal parties
  • Gym access at Deezer HQ, with lunch-time yoga and pilates classes
  • Kitchen stocked with free drinks and snacks daily
  • English and French language courses 
  • Regular hackathons & meetups
  • Work from Home & flexible remote