Senior Java Backend Developer

About the job

G10X: We have an exciting opportunity for Senior Java Backend Developer Senior Software Engineer – Java / Kafka / Oracle Experience: 6–8 years Location: Kochi/Remote Work Timings: 01:00 PM – 10:00 PM IST Immediate Joiners Preferred Primary / Mandatory Skills • Java: Core Java, Java 8+, Multithreading, Collections, JVM • Kafka: Topics, partitions, consumer groups, offsets, error handling • Database: Oracle (SQL, PL/SQL, performance tuning) • Frameworks: Spring, Spring Boot • APIs: REST, JSON (OAuth/JWT preferred) • Version Control: Git Role Summary Senior Software Engineer responsible for designing, building, and scaling high-volume, transaction-intensive e-commerce backend systems using Java, Kafka, and Oracle. The role supports order management, fulfilment, payments, and omnichannel integrations for global brands. Key Responsibilities • Design and develop scalable backend services and APIs using Java & Spring Boot • Build and maintain event-driven microservices using Apache Kafka • Handle real-time processing of orders, payments, shipments, and customer events • Design and optimize Oracle DB schemas, SQL/PLSQL, and high-performance queries • Ensure high availability, low latency, and fault tolerance • Identify and resolve performance bottlenecks across application, Kafka, and DB layers • Integrate with payment gateways, logistics, ERP/WMS/CRM systems • Support omnichannel flows (web, mobile, marketplace, in-store) • Participate in system design, code reviews, and mentoring junior engineers • Work with CI/CD pipelines, testing, deployments, and production support Good to Have • Microservices & distributed systems • High-volume e-commerce / retail platforms • Cloud exposure (AWS preferred) • Docker, Kubernetes (basic) • NoSQL: Redis, MongoDB • Monitoring: Splunk, ELK, Prometheus Domain Knowledge (Preferred) • Order lifecycle management • Payments (authorization, settlement) • Fulfilment, logistics, returns & refunds • Omnichannel commerce

Requirements

• Java
• Kafka
• Oracle
• Spring
• REST
• Git

Preferred Technologies

• Java
• Kafka
• Oracle
• Spring
• REST
• Git