{"id":602754,"url":"https://alion.io/job/actdigital-developpeur-senior-java-kafka","title":"Développeur Senior Java / Kafka","company":{"id":668682,"name":"Act Digital","domain":"actdigital.com","url":"https://alion.io/company/actdigital-2","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"A","score":95,"open_postings":21,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":365,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","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":46000,"max_usd":78000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":163},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"Cassandra","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"GitLab CI","optional":false},{"name":"Gradle","optional":false},{"name":"Java","optional":false},{"name":"Jenkins","optional":false},{"name":"JUnit","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"Maven","optional":false},{"name":"Mockito","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"SonarQube","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2025-10-16T12:06:51Z","employer_posted_date":"2025-10-16","last_verified_at":"2026-10-16T02:46:13Z","board_verified":true,"closed_at":null,"days_open":364,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":364},"description":"Act digital est une société de conseil et d’expertise en technologies créée en 2011. Notre vocation est d’accompagner nos clients sur leurs enjeux de transformation numérique. Notre offre s’articule autour des expertises suivantes :\nSoftware Delivery\nInfrastructure & Cloud Computing\nAgile IT Performance\nBusiness Performance\nNous sommes un groupe international implanté dans plus d’une dizaine de pays et comptant 5700 collaborateurs.\nNotre succès passant par le développement et l’épanouissement de chaque collaborateur, nous attachons beaucoup d’importance à offrir les meilleures conditions de travail possibles :\nTélétravail disponible sur une grande partie de nos missions\nUn environnement de travail en Flex Office disponible pour tous et tout le temps pour favoriser la communication et la collaboration\nDes communautés d’experts pour partager et diffuser les compétences au sein du groupe\nUn encadrement projet et un suivi RH de proximité\nDes formations et certifications proposées annuellement\nUne valorisation des parcours d’expertise de nos consultants\nUne ouverture forte sur la mobilité internationale ponctuelle ou de longue durée\nDes possibilités d’intrapreneuriat\n Missions principales\nConcevoir, développer et maintenir des applications backend en Java (Spring Boot).\n\nDéfinir, implémenter et optimiser des flux d’événements sur Apache Kafka (topics, partitions, performance, sécurité).\n\nParticiper aux choix d’architecture logicielle et à l’industrialisation des solutions temps réel.\n\nAssurer la qualité du code (tests unitaires, intégration continue, revues de code).\n\nContribuer à la mise en production et au suivi des applications (CI/CD, monitoring, support).\n\nCollaborer étroitement avec les équipes Produit, Data et Infrastructure.\n\nÊtre force de proposition sur l’évolution des bonnes pratiques techniques et méthodologiques\n\n Compétences techniques recherchées\nLangages : Java 11+ (Spring / Spring Boot), Kotlin apprécié.\n\nMessaging & Streaming : Kafka (topics, consumers/producers, optimisation des performances, monitoring).\n\nBases de données : SQL (PostgreSQL, Oracle), NoSQL (MongoDB, Cassandra).\n\nCI/CD & outillage : Git, Maven/Gradle, Jenkins, GitLab CI.\n\nCloud & Conteneurisation : Docker, Kubernetes, connaissance AWS ou GCP appréciée.\n\nTests & qualité : JUnit, Mockito, SonarQube.\n\nArchitecture : microservices, API REST, event-driven architecture.\n\nProfil recherché\nBac+5 en informatique ou équivalent.\n\nExpérience confirmée (minimum 7 ans) en développement Java backend.\n\nExpertise sur Kafka et les architectures orientées événements.\n\nSens du travail en équipe, rigueur et curiosité technologique.\n\nConnaissance du secteur bancaire/financier est un plus.\n\n If you applied for this position the Controller of your personal will be ALTER SOLUTIONS France, with its registered office at 6 avenue du Général de Gaulle 78000 Versailles. The personal data provided by you will be processed for the purpose of the recruitment process and for future recruitment processes.\nYou have the right to access the content of your data, request their rectification, erasure, restriction of processing, the right to data portability, the right to object to the processing of your data and the right to lodge a complaint to the DPO ().","description_format":"text","description_chars":3283,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"French","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","IT Outsourcing & Dedicated Teams","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-09-10T17:51:38Z"},{"event":"open","at":"2026-09-25T17:53:40Z"}],"visa":[],"liveness":{"score":42,"band":"fade","label":"Fading","p_open":1,"p_active":0.7,"p_room":0.6,"age_days":363,"expected_fill_days":365,"reasons":["conf:40","win:late","crowd:"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/actdigital-developpeur-senior-java-kafka","json_url":"https://alion.io/job/actdigital-developpeur-senior-java-kafka.json","meta":{"generated_at":"2026-10-16T05:46:49Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":3134,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":668682},"rest":"https://alion.io/mcp/rest/get_company?id=668682"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Factdigital-developpeur-senior-java-kafka"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Factdigital-developpeur-senior-java-kafka"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Factdigital-developpeur-senior-java-kafka"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/actdigital-developpeur-senior-java-kafka\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Factdigital-developpeur-senior-java-kafka"}]}