Back End Developer

Sr. Backend Engineer – Role OverviewAs a Backend Engineer, you will be responsible for designing and building high-performance backend services that power our commerce platform.You will work closely with Product, Frontend, Data Science, and AI teams to create reliable, scalable, and low-latency systems capable of handling real-time user interactions.ResponsibilitiesCore Platform DevelopmentDesign and develop scalable backend services using Node.js and NestJSBuild REST APIs and event-driven microservicesDevelop secure and high-performance systems for product catalogs, orders, payments, and user managementEnsure platform reliability, scalability, and fault toleranceRealtime SystemsBuild real-time bidding enginesDevelop live pool participation systemsCreate real-time price update infrastructureImplement WebSocket and event streaming architecturesDesign low-latency notification systemsData & PerformanceOptimize PostgreSQL queries and database performanceImplement Redis-based caching strategiesBuild event processing pipelines using KafkaMonitor application performance and improve scalabilityCollaborationWork closely with Product Managers to translate business requirements into technical solutionsCollaborate with Frontend Engineers to build seamless user experiencesSupport AI/ML teams with data pipelines and event collectionRequired SkillsBackendNode.jsNestJSTypeScriptREST APIsGraphQL (Preferred)DatabasesPostgreSQLRedisMessaging & RealtimeKafkaWebSocketsEvent-driven architectureCloud & InfrastructureAWS / GCPDockerKubernetes (Preferred)CI/CD pipelinesSystem DesignMicroservices architectureDistributed systemsScalability and performance optimizationDatabase design and optimizationExperience Required4+ years of backend development experienceExperience building high-traffic applicationsExperience with real-time systemsExperience working with distributed architecturesExperience in consumer internet, fintech, gaming, marketplace, or e-commerce platforms is preferredNice to HaveExperience building:Auction systemsLive bidding platformsDynamic pricing enginesRecommendation systemsEvent streaming platformsMarketplace applicationsGaming mechanics and reward systems