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

What you'll do We are looking for a Senior Software Engineer to join the Patient Online Booking feature team in the Patient Health Platform domain. Our team is responsible for enhancing the booking experience for our 90 million patients, with over 300 million appointments expected to be booked this year. Empower your team to build better products, playing a pivotal role in the improvement of one of France’s most downloaded apps! Your responsibilities include but are not limited to: Collaborate with product managers, designers, and other engineers to define and implement features to improve healthcare access for patients Take a leading role within the team and contribute to establishing a technical vision that ensures the performance, security, and usability of the application, taking into account the future needs and the high scalability needs. Bring your expertise and experiences to help us continuously improve the way we design, implement, test, and monitor high-quality features Improving the performance of key features implemented in Java and Ruby on Rails, sometimes completely challenging the status quo Taking leadership on delivering roadmap items (together with the team) Contributing to establishing a technical vision and co-drive the creation of the roadmap for next quarters Who you are If you don’t meet all the requirements below but believe this opportunity matches your expectations and experience, we still encourage you to apply! You are proactive, curious, collaborative and eager to learn You are primarily a backend engineer with expert knowledge of Java and a good knowledge of Ruby on Rails (or similar frameworks). You have a solid understanding of web technologies and software development life cycle You have a “user first” mindset and want to build a product focused on bringing value to its users, through secure, well-tested and pragmatic code You embrace and champion AI-augmented engineering , leveraging AI coding tools (GitHub Copilot, Claude Code...) to boost your own productivity and help the team adopt these practices effectively You are fluent in English What we offer Free comprehensive health insurance for you and your children 25 days of paid vacation per year, plus up to 14 days of RTT Free mental health and coaching services through our partner Moka.care Work from abroad for up to 10 days per year thanks to our flexibility days policy Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib A subsidy from the work council to refund part of the membership to a sport club or a creative class 50% reimbursement of your public transport subscription Parent Care Program: receive one additional month of leave on top of the legal parental leave For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support Relocation support in case of international mobility Access to the best AI tools for coding, development and dedicated training The interview process Recruiter Interview Live Coding Interview System Design Interview Behavioral Interview At least one reference check Job details Permanent position Full Time Based in Levallois-Perret Hybrid position 3 days/week in the office Start date: As soon as possible If you would like to find out more about tech life at Doctolib, feel free to read our latest Medium blog articles ! At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, disability. To ensure equal opportunities, we invite you to exclude personal information (e.g. pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process. Join us in building the healthcare we all dream of! All information provided is processed by Doctolib for application management. For data processing details, click here . Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.