Software Engineer Java/Kotlin (x/f/m)

Your Impact

We are looking for a Software Engineer to join the Identity and Access Management team.

Join our new team dedicated to authentication and user rights management. As a Software Engineer, you will play a key role in leading the gold standard for access control on Doctolib's platform. Help protect sensitive user and financial data while enabling seamless workflows for healthcare professionals. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.

What you'll do

Your responsibilities include but are not limited to

Develop and maintain secure authentication and authorization services that scale across millions of users

Design and build modern OIDC authentication flows on Keycloak that handle security-critical traffic across Doctolib's platform

Lead large-scale migrations of authentication journeys to the new IAM stack, ensuring zero-downtime rollouts and measurable improvements in scalability, security, and developer experience

Build high-performance backend features using Java/Kotlin and Springboot, working with event-driven architectures (Kafka)

Collaborate with product managers, designers, and engineers across teams to deliver secure, user-first solutions

Contribute to frontend implementations using React (TypeScript/JavaScript) to create seamless user experiences

Bring your expertise to continuously improve our engineering practices, code quality, and system reliability.

Who you are

Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply.

You'll be a great fit if you

You have at least 4+ years of software engineering experience as a developer

You have strong backend development skills with Java or Kotlin and experience with distributed systems

You are willing to learn and work with Ruby on Rails

You are willing to work on frontend development wi