Hiring a Senior Backend Developer with extensive experience in Node.js, Java, Python , and a strong grasp of AI/ML integration . You will play a critical role in architecting backend systems , managing security and firewall configurations , and overseeing deployment on Amazon S3 and other server environments . This role demands technical leadership and hands-on development expertise in modern backend technologies and multi-model databases. Key Responsibilities: Design and implement scalable, secure, and high-performance application architectures . Develop robust backend services using Node.js , Java , and Python . Integrate AI/ML models into backend systems and APIs. Handle server-side security , including firewall setup , encryption protocols, and access control. Deploy and manage applications across Amazon S3 , EC2 , Lambda , and other cloud infrastructures . Ensure smooth integration of microservices , third-party APIs, and internal services. Manage databases (SQL, NoSQL, time-series, graph, etc.) and optimize queries and storage structures. Define and enforce coding standards, review code, and mentor junior developers. Work closely with DevOps for CI/CD pipelines and system monitoring. Perform load testing, performance tuning, and fault tolerance setups. Required Skills: 7+ years of backend development experience with Node.js , Java , and Python . Strong knowledge of AI/ML model handling , pipelines, and integration into backend services. Deep understanding of cloud infrastructure , especially AWS (S3, EC2, Lambda, CloudFront, etc.). Hands-on experience with firewall configuration , IAM policies , and network security . Proficient in database management , including: Relational DBs (MySQL, PostgreSQL) NoSQL DBs (MongoDB, DynamoDB) In-memory stores (Redis) Search engines (Elasticsearch) Familiarity with graph and time-series databases is a plus. Understanding of microservice architecture , message queues (RabbitMQ, Kafka), and API gateways . Familiar with Docker , Kubernetes , and serverless architecture .