Senior Java Backend Engineer | Spring Boot | Microservices | Kafka

Senior Backend Engineer (Java)

Job Description

We are looking for a Senior Backend Engineer (Java) with strong experience in building scalable, high-performance backend services and REST APIs using Java and Spring Boot . The ideal candidate will have hands-on experience developing microservices, event-driven systems, and distributed applications that operate reliably under heavy load.

The role involves designing and developing backend services, working with relational databases and caching technologies, implementing event-driven architectures, and optimizing application performance. You will also contribute to CI/CD pipelines, automated testing, code reviews, and software design practices.

Key Responsibilities

• Design, develop, and maintain high-performance backend services and REST APIs using Java and Spring Boot.

• Build and maintain scalable microservices with a focus on reliability, maintainability, and performance.

• Develop event-driven architectures and asynchronous processing flows using Kafka or similar streaming platforms.

• Design and optimize relational database solutions , including PostgreSQL, with a strong focus on query performance and efficient data handling.

• Implement and optimize caching solutions using Redis, Ignite, or similar technologies.

• Develop and integrate gRPC services for efficient communication between distributed services.

• Design and implement multi-tenant backend services , ensuring appropriate tenant isolation, scalability, and security.

• Containerize and deploy services using Docker and Kubernetes .

• Contribute to CI/CD pipelines and automated deployment processes.

• Write unit, integration, and performance tests to ensure application reliability and quality.

• Apply appropriate design patterns, clean code principles, and software engineering best practices .

• Participate in code reviews , technical discussions, and architectural decisions.

• Perform performance profiling, troubleshooting, and tuning to optimize services under heavy workloads.

• Monitor and analyze application performance, database queries, resource utilization, and system bottlenecks.

• Collaborate with other engineers and teams to design and deliver reliable distributed systems.

Requirements

• 5+ years of professional software development experience , with strong hands-on experience in Java.

• Strong production experience with Java and Spring Boot .

• Proven experience building microservices and REST APIs at scale .

• Hands-on experience with Kafka or similar event-streaming platforms .

• Strong knowledge of PostgreSQL or other relational databases , including query optimization and database performance.

• Experience with Redis, Apache Ignite, or similar caching technologies .

• Experience with gRPC and distributed service-to-service communication.

• Experience designing multi-tenant applications and services .

• Experience with Docker and Kubernetes .

• Good understanding of CI/CD practices and deployment automation .

• Strong knowledge of unit testing, integration testing, and automated testing practices .

• Good understanding of software design patterns, clean code, and SOLID principles .

• Experience participating in code reviews and collaborative software development .

• Practical experience with performance profiling, load testing, troubleshooting, and application tuning .

• Strong understanding of scalable, reliable, and distributed backend architectures.

Technical Stack

Java | Spring Boot | Microservices | REST APIs | Kafka | PostgreSQL | Redis / Apache Ignite | gRPC | Docker | Kubernetes | CI/CD