Full Stack Developer - Backend (Severs/Database/API/Integrations)

Job Description

Job Summary We are seeking a Backend-Focused Full Stack Developer with strong expertise in building scalable, high-performance server-side applications. While the role is predominantly backend-oriented, you should be comfortable working with frontend components when needed. You will build and maintain APIs, manage datasets, integrate with ERP/POS systems, and collaborate closely with cross-functional teams to deliver seamless e-commerce experiences. This role is ideal for someone who thrives in solving complex technical problems, optimizing large-scale systems, and ensuring the reliability and efficiency of critical backend services. Key Responsibilities Design, develop, and maintain scalable backend services and microservices. Build and optimize RESTful and GraphQL APIs for e-commerce workflows. Work with relational and NoSQL databases, focusing on performance, indexing, and query optimization. Ensure high availability, performance, and security of backend systems. Implement authentication, authorization, and industry-standard security practices (OAuth, JWT, OWASP). Develop and maintain integrations with ERP/POS systems and external third-party services. Utilize caching, message queues, and distributed systems for scalability (Redis, Kafka, RabbitMQ). Collaborate with frontend teams to ensure seamless end-to-end functionality. Troubleshoot, profile, and debug backend issues across environments. Automate deployments, CI/CD pipelines, and support containerized/cloud infrastructure. Maintain clear technical documentation and contribute to engineering best practices. Core Technical Skills Backend development using Node.js , Java (Spring Boot) , or Python (Django/Flask) API development: RESTful APIs , GraphQL , integration design patterns Database expertise: PostgreSQL , MySQL , MongoDB , indexing & query optimization Caching & performance: Redis , cache invalidation patterns, CDNs, performance tuning Message brokers & eventing: RabbitMQ , Kafka , asynchronous processing Security: secure coding, OAuth , JWT , security compliance (PCI), OWASP best practices ERP/POS integrations, enterprise middleware, data flow management Containerization & infrastructure: Docker , Kubernetes , Helm , Terraform , CloudFormation Monitoring & observability: ELK Stack , Prometheus , Jaeger/Zipkin Distributed systems optimization, profiling, load testing Soft Skills Excellent analytical, diagnostic, and problem-solving abilities. Strong collaboration skills with product, QA, DevOps, and frontend teams. Ability to prioritize multiple tasks and manage time effectively. Clear communication of technical concepts and decisions. Ownership mindset with a focus on reliability and service-level commitments. Preferred Skills Experience with microservices and domain-driven design (DDD) . Familiarity with event-driven architectures , CQRS, and streaming systems. Exposure to Big Data / ETL tools (Spark, Airflow). Experience implementing GraphQL servers. Background in serverless technologies (AWS Lambda, GCP Cloud Functions). Relative/Core Experience: 05 to 07 years