Senior Backend Developer (Node.js + PostgreSQL/MongoDB)Location: Remote / Hybrid – Lagos preferred Type: Full - time Experience: 5+ yearsWe are hiring a Senior Backend Developer with advanced experience in Node.js, PostgreSQL, MongoDB, and scalable API architecture. You will design and maintain mission - critical backend services that power our platform’s core features.ResponsibilitiesBuild and maintain backend services using Node.jsDesign efficient data models for PostgreSQL and MongoDBDevelop clean, scalable API endpoints using Prisma / TypeORM / SequelizeImplement caching, rate - limiting, and session handling with RedisBuild secure authentication and role - based authorization using JWTOptimize backend performance, queries, and system reliabilityCollaborate with frontend engineers on API contracts and integrationsLead backend architecture decisions and mentor junior engineersContribute to CI/CD, testing strategies, and deployment automationRequirements5+ years backend development experience with Node.jsStrong knowledge of relational and non - relational databasesProficiency with Prisma / TypeORM / SequelizeSolid experience working with Redis (caching, queues, sessions)Advanced understanding of JWT - based authentication & RBACExperience designing and scaling REST APIs or microservicesAbility to analyze and optimize complex backend performance issuesStrong architectural decision - making abilityNice to HaveExperience with distributed message queues (BullMQ, Kafka, RabbitMQ)Experience integrating payment systems (Paystack, Stripe)Familiarity with Docker and cloud platforms (AWS, Render, Railway)