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Back-End Developer



May 23, 2023


The Reactis Group supports its clients in their digital transformation and performance improvement. Our client is currently looking for a Senior back-end developer to complete its experienced team which is evolving in start-up mode.

Job Description:

You have relevant experience in back-end development? You master NodeJs? You dream of participating in the development of a nice and ambitious team? This position is for you!


We are looking for a talented senior back-end developer to join our startup client as a key member of the technical team. You will participate in the design, development and maintenance of back-end solutions. You will work closely with their back-end team and the Delivery Manager to deliver innovative and efficient solutions.


Their back-end solutions are architected in NodeJs microservices that are deployed on Google Cloud, with MongoDB and Datastore databases, Elasticsearch for all our statistics. Our new applications are event-driven using Pub/Sub, and microservices.


Primary Responsibilities:


  • Design and develop back-end functionality using Node.js and Typescript
  • Progressively migrate the functionalities of the old JAVA architecture to a NodeJs microservice architecture
  • Actively participate in the design and architecture of the back-end
  • Optimize application performance
  • Write clear, maintainable and scalable code
  • Participate in the testing and validation of the application
  • Understand the business issues and propose innovative solutions to improve the product.

Qualifications required

Profile required

With a degree in computer science (BAC+5) (France) or a bachelor's degree in computer science (Quebec), you have 5 years of experience in a technological environment with high data volume, ideally in the field of logistics and transportation.


  • You like to work in a teamyou are curious about about new trends, autonomous and rigorous.
  • Endowed with a strong capacity of adaptation and an excellent interpersonal skills you appreciate transversality and challenge,
  • You apply a scientific approach to your work and your proposals are always always supported by evidence,
  • You like your work to have a concrete practical application and bring about results quickly.
  • You are interested in the productyou wish to actively participate in its design and bring your point of view



  • Mastery of JavaScript and also TypeScript
  • Mastery with databases NoSQL (MongoDB)
  • Mastery of distributed architectures and microservices architectures
  • You have knowledge in JAVA
  • Ability to write clear, structured code and easily maintainable code
  • Excellent communication communication and team teamwork
  • Knowledge of the platform and tools Google cloudplatform and tools, on the use of sockets and Pub/Sub would be a plus.

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