We invite a Senior Data Platform / Backend Engineer to join our team and work on a large-scale data processing platform for a European MedTech product company.About usOn the market since 2002Operational departments and development hubs worldwideInternational team of technology professionalsAbout the projectOur customer is a European MedTech product company developing a remote monitoring platform for patients with wearable cardiac devices.The platform ingests and processes medical data from a large number of external sources. You will work on backend services, ETL pipelines, and distributed workflows designed for large-scale data processing, with a strong focus on reliability, scalability, and performance.Your responsibilitiesDevelop backend services using TypeScript, Node.js, and NestJSBuild workflow-based applications using TemporalDesign, develop, and optimize ETL and data processing pipelinesWork with Dagster to orchestrate data workflowsDevelop and maintain Kafka-based data processing and messaging solutionsIntegrate external APIs and data sourcesDesign and maintain microservicesOptimize PostgreSQL, MariaDB, and MongoDB databasesWork with Docker, Kubernetes, AWS, and CI/CD pipelinesContribute to the reliability, scalability, and performance of the platformCollaborate with Backend Developers, Data Engineers, DevOps, Analytics, and Product teamsTechnical environmentBackendTypeScriptNode.jsNestJSData PlatformTemporalDagsterKafkaSparkDatabasesPostgreSQLMariaDBMongoDBInfrastructure & DevOpsAWSDockerKubernetesGitLab CIMonitoring & TestingGrafanaJestPlaywrightRequirements5+ years of commercial backend development experienceStrong experience with TypeScriptCommercial experience with Node.js and NestJSSolid Data Engineering background and experience building real-world ETL/data processing pipelinesHands-on experience with Temporal and DagsterHands-on experience with KafkaStrong SQL skills and practical experience with PostgreSQL, MariaDB, and/or MongoDBExperience designing microservices and integrating external APIsExperience with Docker and KubernetesFluent French and English communication skillsDaily experience using AI-assisted development tools such as Cursor, Windsurf, GitHub Copilot, or similarAbility to work 2 days per week from the customer's office in ParisNice to havePythonSparkAWSTDDAvro, Parquet, or ProtobufMedTech experienceKnowledge of OWASP Top 10Why join us?Stable, long-term workload: 100% / 40 hours per weekEmployment through an employment contract in the relevant country or a private entrepreneur contract24 working days of paid vacation per yearPaid sick leaveFlexible working hoursWork on an international product with an experienced teamOpportunities to learn and work with modern technologiesInternal training, meetups, and knowledge-sharing sessionsWell-defined development processes and methodologiesPartial reimbursement of medical expenses, massage, or sports activitiesTeamYou will join a cross-functional Data Platform team consisting of:Backend DevelopersData EngineersDevOps & AnalyticsProduct ManagerThe team follows an Agile development process within a product environment.Location & languagesLocation: Paris, FranceWork model: Hybrid — 2 days per week onsite at the customer's officeFrench: Fluent — French is used for day-to-day communication within the backend team.English: FluentInterested?If you have a strong TypeScript/Node.js backend background combined with real Data Engineering experience and hands-on Temporal and Dagster experience, we'd be happy to hear from you.Send us your CV and let's talk!

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Senior Data Platform / Backend Engineer – TypeScript, Temporal & Dagster