Junior Software Engineer - Backend

  • Paris, France
  • Full-time

Company Description

BlaBlaCar is the global leader in long-distance carpooling. We’re an innovative and fast-growing company building a unique community of 60+ million members to transform the way people travel across the world!


Job Description

One of BlaBlaCar’s core ambitions is to build the largest people-powered travel network in the world. To achieve that goal, we set ourselves high and ambitious targets, bringing tech and data to the heart of a renewed product experience and company strategy.

The engineering team:

Two of the key company priorities for the next 12 months are:

  • the ongoing migration from a monolith architecture to a service-oriented architecture, from a PHP/Symfony stack towards a Java dominated one and from an on-premise deployment to a cloud architecture.

  • exciting product evolutions, based on smart geo-matching and practical algorithms that give a personalized experience to each individual user.

By joining our Engineering team, you will be working alongside talented individuals grouped in small agile teams that each have strong ownership on their piece of these goals.

The core of our stack is composed of Java, React, Android, Swift, Go, PHP/Symfony2, KafKa, ElasticSearch, Cassandra, Redis...

Why join us?

We are looking for talented engineers to build complex services that aim to bring advanced features to our members.

By joining the backend team you will be building the heart of our new technical platform based on a state of the art service oriented architecture. The team focuses mostly on the subjects related to searching and pricing trips and all the geo topics. As a backend engineer you will be solving complex geo-based problems at a massive scale while building a robust and easy-to-operate technical stack.

What you will directly contribute to:

  • Building a robust and scalable backend to support BlaBlaCar website and mobile apps, mainly in Java;

  • Taking part in the design of the services and their APIs to ensure they are scalable, robust and easy to use;

  • Interacting with multiple internal and external stakeholders (product managers, business analyst, data scientists, etc);

  • Deploying your services to production and ensuring they are performing as expected through monitoring and instrumentation.


What you will need to be successful:

  • A startup mentality where iterating fast and delivering with quality is key to the success of the project

  • Fluency in object oriented programming language (Java is a plus)

  • Interest in distributed systems (kafka, cassandra, redis, inter services communication, GRPC...)

  • Hands-on mentality: you will be operating our container based infrastructure (Docker/rocket, kubernetes…)  

  • Out of the box thinking and mindset of constant knowledge sharing

  • Decisions led by impact and care for the big picture

  • Assertive contribution to the decision making process and team roadmap

  • A fun attitude


Additional Information

A few practical details about the role:

  • Start: As soon as you are ready!

  • Location: Paris HQ

  • Contract: Permanent contract (CDI)

  • Compensation: Competitive package based on experience

What we offer all of our employees:

  • A start-up spirit that fosters agility, teamwork and impact

  • Challenging career opportunities in a high-growth and fast-paced environment

  • An inspiring working environment including state-of-the-art office spaces

  • Free carpooling to live our value “Be The Member”

  • Annual BlaBlaBreak which takes us all for an unforgettable weekend

  • Possibility to do a BlaBlaSwap once a year and go work from another BlaBlaOffice abroad

  • Bi-Weekly BlaBlaTalks when we learn from each other

  • Weekly Tech Demos

  • The choice between the latest Mac or PC equipment

  • Opportunity to attend Tech conferences in France and Europe

What is next:

If you are ready to join our exciting journey, please apply below: upload your resume in English (PDF format) and answer our questions in English. Kindly note that only complete applications will be reviewed by our hiring team and that all your information will be kept confidential.

You can expect us to review your application within the following two weeks. If your application and profile fit our requirements, we will invite you for a phone interview, followed by two/three in-house interview sessions and a test.


BlaBlaCar is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.