Java Backend Engineer

About the Role

We are seeking a highly skilled and experienced Senior Java Backend Developer with over 5 years of hands-on expertise in building scalable, distributed, and production-grade backend systems. This role is focused on new development and system design, not maintenance or support. The ideal candidate possesses a deep understanding of JVM internals, concurrency, system design, database optimization, and microservices architecture. You will independently design, build, debug, and scale backend services in real-world production environments. We are looking for an engineer with a strong sense of ownership, analytical thinking, and exceptional debugging capabilities. This position requires comfort in handling high-throughput systems, production incidents, and contributing to architectural discussions.

This position is 100% on-site at our Pune office. Candidates must be willing to commute or relocate. Immediate joiners or candidates with short notice periods are strongly preferred.

Key Responsibilities

Backend Architecture & System Design

• Design and develop scalable, high-performance backend systems using Java (17/21) and Spring Boot.
• Architect and implement microservices-based systems with clean API contracts.
• Independently own backend modules from requirement analysis to deployment.
• Apply SOLID principles, clean architecture, and design patterns in production systems.
• Participate in architectural discussions and provide system-level implementation inputs.

Core Java & JVM Engineering

• Demonstrate strong understanding of Core Java (Collections, Generics, Streams, Functional interfaces).
• Implement advanced concurrency using java.util.concurrent, CompletableFuture, ExecutorService, Locks.
• Understand JVM internals (Heap, Stack, Metaspace, GC algorithms like G1GC/ZGC).
• Analyze thread dumps and heap dumps for diagnosing performance issues.
• Write efficient, memory-conscious, and thread-safe code.

Microservices, APIs & Distributed Systems

• Design and develop RESTful APIs with proper validation, error handling, logging, and security.
• Implement resilience patterns (Retries, Circuit Breakers, Timeouts, Rate Limiting).
• Work with messaging systems like Kafka / RabbitMQ for event-driven architectures.
• Handle inter-service communication and distributed tracing.
• Implement versioned APIs and backward-compatible releases.

Database Design, Optimization & Caching

• Design scalable relational database schemas.
• Write complex, optimized SQL queries and analyze execution plans.
• Identify and resolve N+1 query issues in Hibernate / JPA.
• Work with caching technologies like Redis or Memcached.
• Experience with NoSQL databases (Cassandra / MongoDB / Elasticsearch preferred).
• Ensure transaction consistency and data integrity in concurrent environments.

Performance Optimization & Production Troubleshooting

• Identify and resolve performance bottlenecks, memory leaks, and high CPU usage.
• Perform root-cause analysis of production incidents.
• Use profiling tools (VisualVM, JProfiler, Eclipse MAT) to analyze system behavior.
• Optimize application throughput and latency under heavy load.
• Improve observability through proper logging and monitoring practices.

Security & Cloud Exposure

• Implement Spring Security with OAuth2 / JWT-based authentication.
• Secure microservices with role-based access control.
• Hands-on exposure to AWS / Azure / GCP (preferred).
• Familiarity with Docker and CI/CD pipelines.
• Understand containerized deployments and environment configuration.

Quality, Ownership & Engineering Practices

• Write unit and integration tests (JUnit, Mockito, Testcontainers).
• Conduct code reviews and enforce coding standards.
• Follow Git branching strategies and maintain proper documentation.
• Mentor junior developers and provide technical guidance.
• Take complete ownership of assigned deliverables with accountability and quality focus.

Required Skills

• 5+ years of strong, hands-on experience in Java backend development.
• Deep expertise in Core Java and multithreading.
• Strong experience with Spring Boot and microservices architecture.
• Solid understanding of relational databases and query optimization.
• Experience with messaging systems (Kafka / RabbitMQ preferred).
• Strong debugging and analytical problem-solving skills.
• Ability to independently design and deliver scalable backend modules.
• Excellent communication and collaboration skills.

Preferred Qualifications

• Experience with Elasticsearch indexing and search optimization.
• Experience with Redis or Memcached for caching strategies.
• Exposure to distributed logging/tracing tools (ELK, OpenTelemetry, etc.).
• Experience in high-traffic or product-based environments.
• Hands-on knowledge of public cloud platforms (AWS / Azure / GCP / OCI).

What We Offer

• Opportunity to work on high-impact, production-grade backend systems.
• Ownership of core backend modules with architectural exposure.
• Health insurance coverage.
• Collaborative, growth-oriented engineering culture.
• Paid leave.

Work Model & Requirements

• Work Hours: Day shift (Monday to Friday)
• Location: Pune, Maharashtra
• Mode: Completely on-site
• Preference: Immediate joiners / short notice candidates preferred

Job Details

• Job Type: Full-time, On-site, Permanent
• Designation: Java Developer
• Experience: 5+ years
• Location: Pune, Maharashtra
• Schedule: Day shift

Job Types: Full-time, Permanent

Benefits:

• Health insurance
• Paid sick time
• Paid time off

Ability to commute/relocate:

• Pune, Maharashtra: Reliably commute or planning to relocate before starting work (Required)

Application Question(s):

• Are you available to join immediately? If not, please mention your notice period.
• Please mention your CTC
• Are you currently based in Pune ? Candidates must be available in Pune to be considered for this position.

Experience:

• Java: 5 years (Required)

Work Location: In person