{"id":3164259,"url":"https://alion.io/job/blablacar-confirmed-backend-engineer-train","title":"Confirmed Backend Engineer - Train","company":{"id":13813,"name":"Blablacar","domain":"blablacar.com","url":"https://alion.io/company/blablacar","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":43000,"max_usd":70000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":94},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"JUnit","optional":false},{"name":"Kubernetes","optional":false},{"name":"Mockito","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"Kotlin","optional":true}],"status":"live","first_seen_at":"2026-10-23T14:47:59Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-10-29T16:29:40Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Your Mission\nWe 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.\nAs 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.\nBlaBlaCar’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.\nYou 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.\nYour responsibilities\nDefining scalable solutions to overcome the technical challenges of Train Distribution\nEnhancing, maintaining and monitoring the current BlaBlaCar train ecosystem.\nParticipating in the whole application lifecycle, meaning : initial discovery, design, development, tests strategy, deployment to production, monitoring, alerting and support\nInteracting with people with different roles, backgrounds and culture, and share your technical expertise with a mix of technical, product and business experts. \nTake the lead on complex projects involving multiple teams from BlaBlaCar in different pillars and external actors.\nCultivate a continuous learning mindset, testing and experimenting new patterns, contributing to elevate the train team engineering standards. \nActively leverage AI tools in your daily workflows, explore innovative AI-driven engineering practices, to improve productivity and code quality.\nYour qualifications\nYou have 3+ years of experience from companies with a strong engineering culture.\nYou are fluent in Java and knowledge of frameworks such as Spring Boot, JUnit and Mockito.\nYou have hands-on experience with Git, Docker, Kubernetes, and monitoring solutions.\nYou know what a service oriented architecture looks like, and you can determine when to apply a given architectural pattern.\nYou understand when and how to do a tradeoff between fast iterations and delivery quality.\nYou have excellent communication skills, you’re humble, and you are a team player.\nFluency in English.\nNice to have : you have strong knowledge of train distribution or of a similar environment with the same technical challenges.\nWhat we have to offer\nHybrid position\n4 additional weeks on top of legal maternity/paternity leaves\n50% healthcare coverage (Alan)\nFinancial support for home office equipment\nMinimum 25 days holiday per year\nLocal meal plan policy (Swile card)\n50% transportation paid (Forfait Mobilité Durable)\nFree unlimited carpooling & bus rides\nPersonal growth via trainings, mentorship, and internal mobility programs\nEmployee Stock ownership plan\nRegular team building events\n1 day off per year to test our product\nInterested in joining the ride?\na 45-min video-call with a Talent Acquisition Manager, to get to know you, understand your career expectations and answer your questions\na 60-min video-call with Solène, Engineering Manager, to discuss your experience and share more details about the squad\na 90-min live coding session with Software Engineers\na 60-min design interview with Software Engineers\na 30-min video-call for vision fit and rounding off the process\nOur hiring process lasts on average 25-30 days, offers usually come within 48 hours.\nBlaBlaCar is an equal opportunity employer. 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