Company Description FlowFlex.ai is an AI-driven customer engagement and marketing automation platform that enables businesses to create, share, and deploy intelligent engagement flows across WhatsApp, SMS, and Email. Our microservices-based architecture powers dynamic workflows—such as reviews, loyalty programs, bookings, sales, and support—through a low-code, community-driven “Flow Store.” We’re looking for a talented Senior Node.js Engineer to help us scale our platform, optimize microservices, and build new features that empower our users. Role Description As a Senior Node.js Engineer at FlowFlex.ai, you will: Design, build, and maintain scalable, high-performance microservices (RESTful APIs and event-driven services) in Node.js. Lead the architecture and implementation of new modules within our microservices landscape. Collaborate closely with product managers, frontend engineers (React/Vite/Next.js), DevOps, and QA to deliver end-to-end solutions. Mentor junior engineers, set coding standards, and drive best practices (code reviews, automated testing, CI/CD pipelines). Troubleshoot production issues, perform root-cause analysis, and implement robust monitoring/alerting. Continuously optimize performance (CPU, memory, concurrency) and maintain high availability at scale. Experience with Moleculer.js is a strong plus —you’ll leverage it to design or refactor services into a self-healing, distributed microservices framework. Familiarity with other microservices frameworks or building custom service meshes will also be valued. Qualifications Experience: 5+ years of professional experience building production-grade backend services using Node.js (ES6+). Strong understanding of JavaScript (TypeScript strongly preferred) and asynchronous programming paradigms. Core Tech Skills: RESTful API design and implementation (Express.js, Fastify, or similar). Proficiency with TypeScript (type definitions, generics, interfaces). Database proficiency: MongoDB (Mongoose/ODM) and/or relational databases (PostgreSQL, MySQL). Caching and session management with Redis or similar in-memory stores. Infrastructure & DevOps: Containerization with Docker; orchestration with Kubernetes (GKE/EKS) or Docker Swarm. Familiarity with CI/CD tools (GitHub Actions, Jenkins, GitLab CI). Experience deploying services to cloud platforms (Google Cloud Platform preferred, AWS or Azure acceptable). Messaging & Event-Driven Patterns: Hands-on experience integrating message brokers (RabbitMQ, Kafka, or Redis Pub/Sub). Testing & Quality: Writing and maintaining unit/integration tests (Jest, Mocha/Chai). Adhering to linting/formatting standards (ESLint, Prettier). Soft Skills: Strong problem-solving ability: can break down complex requirements into modular services. Excellent communication: collaborate effectively with cross-functional teams, provide clear documentation. Mentorship: eager to guide and upskill junior engineers and peers through code reviews and pair programming. Show more Show less