R&D Engineer – mobile security


The company

Dejamobile is a Fintech whose mission is to provide simple and secure mobile payment solutions for the benefit of all. Our clients are major payment players, banks, Fintechs, but also merchants and transport companies. We offer our solutions and services at a global scale; international development is at the heart of our objectives in order to become the leader in simple and secure digital transaction solutions!

At dejamobile, our teams are continually challenging their working practices and tools and decide in an agile and collegial way to implement them in the company as required. We are looking for enthusiastic talents, eager to participate in the realization of Dejamobile’s ambitions. Joining a cohesive team, you will enjoy a friendly and dynamic working atmosphere, while taking advantage of the quality living environment offered by Caen in Normandy.

As with all positions in the company, this position is open to people with disabilities.
This position is available at our headquarter in Normandy or in full remote.


  • Onboarding and training program
  • Possibility to work from home
  • Fixed and variable pay
  • 100% employer-sponsored mutual insurance (individual, family)
  • Lunch and holiday vouchers



As part of a dynamic, innovative and cohesive team, you will contribute to the development of software products within the framework of R&D and innovation projects developed internally or with dejamobile’s clients. You will be involved in all the different phases of the project, from the R&D phase to the move to production.

Your responsibilities:

  • Analyse scientific and technological trends in the field
  • Design, model functional requirements and make presentation the project team for decision making
  • Technical implementation under Android and/or iOS
  • Participate to Scrum meetings (contribute to decision making and prioritization)
  • Realize technical documentations (API, implementation guide)
  • Conducting code reviews
  • Provide support to customers and third-party developers using our technologies when needed

Contribute to the R&D program:

  • Keep watching the ecosystem and participate in research conferences and technology fairs
  • Detect new trends and relevant technological breakthroughs in our field
  • Propose R&D topics, write technical notes and articles, edit patent description documents and file patents

You will also have the opportunity to progress on

  • The field of electronic banking and payments
  • Security issues and attacks on mobile secure solutions
  • Knowledge of the security implementations on Android and iOS environments
  • Field experience of rolling out a product, from its design to its move to production using latest cloud technologies



Our next R&D Engineer is specialised in mobile security and has a PhD or Master’s degree in computer science, with a specialisation in software security and/or cryptography. You have a good knowledge of mobile technologies as well as programming languages (Java, Kotlin, C/C++…). You have good interpersonal skills and appreciate teamwork. You are also versatile, dynamic and autonomous. Finally, you are fluent in technical English and can communicate easily in this language.


Send us your application
Can't find a job that matches your profile? Send us your spontaneous application!

You confirm that you have read our privacy policy

You agree that your data may be retained by DEJAMOBILE as part of the recruitment process. Your data will only be kept in the aim at responding to your request and will not be shared with third parties.