Confirmed Backend Engineer - Train

About BlaBlaCar BlaBlaCar is the world’s leading community-based travel app enabling 40 million active members to share rides across 41 countries each year. Its technology matches drivers with empty seats with passengers heading the same way, so they can share the cost of the trip. BlaBlaCar’s mission is to be the go-to marketplace for shared travel, bringing carpooling, buses, and trains together in one place. Globally, the BlaBlaCar Group also includes Obilet, the leading online bus ticketing platform in Turkey. By partnering with over 20,000 operators, the Group offers a wide choice of affordable and sustainable transport solutions. In 2025, the BlaBlaCar community connected 2.7 million meeting points worldwide and enabled 138 million connections between travelers. Drivers saved 568 million euros by carpooling, and all of the BlaBlaCar Group’s mobility services contributed to avoiding 4 million tonnes of CO2 emissions. Your Mission We are looking for a Software Engineer to join the Train Supply team. The mission is to scale the current BlaBlaCar train distribution in Europe  supporting the expansion of the train supply to new markets and countries. As a backend developer you will work on technical challenges and product feature development from early-stage conception, to development, testing strategy, deployment, and monitoring of new releases. BlaBlaCar’s Train GDS stack is a scalable micro service architecture in spring boot 3 started in 2022. It uses REST API to communicate with other backends services in BlaBlaCar and with the suppliers.  You will be reporting to Solene, the Engineering Manager of the team, and working with a team of 3 other backend engineers. You will collaborate closely with several engineering teams, data, QA product managers and business developers to build robust and scalable features. Your responsibilities • Defining scalable solutions to overcome the technical challenges of Train Distribution • Enhancing, maintaining and monitoring the current BlaBlaCar train ecosystem. • Participating in the whole application lifecycle, meaning : initial discovery, design, development, tests strategy, deployment to production, monitoring, alerting and support • Interacting with people with different roles, backgrounds and culture, and share your technical expertise with a mix of technical, product and business experts. • Take the lead on complex projects involving multiple teams from BlaBlaCar in different pillars and external actors. • Cultivate a continuous learning mindset, testing and experimenting new patterns, contributing to elevate the train team engineering standards. • Actively leverage AI tools in your daily workflows, explore innovative AI-driven engineering practices, to improve productivity and code quality. Your qualifications • You have 3+ years of experience from companies with a strong engineering culture. • You are fluent in Java and knowledge of frameworks such as Spring Boot, JUnit and Mockito. • You have hands-on experience with Git, Docker, Kubernetes, and monitoring solutions. • You know what a service oriented architecture looks like, and you can determine when to apply a given architectural pattern. • You understand when and how to do a tradeoff between fast iterations and delivery quality. • You have excellent communication skills, you’re humble, and you are a team player. • Fluency in English. • Nice to have : you have strong knowledge of train distribution or of a similar environment with the same technical challenges. What we have to offer • Hybrid position • 4 additional weeks on top of legal maternity/paternity leaves • 50% healthcare coverage (Alan) • Financial support for home office equipment • Minimum 25 days holiday per year • Local meal plan policy (Swile card) • 50% transportation paid (Forfait Mobilité Durable) • Free unlimited carpooling & bus rides • Personal growth via trainings, mentorship, and internal mobility programs • Employee St