Senior Engineer Java Backend

You will be responsible for designing, building, and optimizing core travel booking engines and APIs as a Senior Backend Engineer (Java). Your key responsibilities will include: - Designing and developing scalable, resilient Java microservices for travel booking workflows - Building and maintaining integrations with GDS, NDC, LCC airlines, and hotel APIs - Optimizing backend systems for real-time flight/hotel search, fare caching, and SSR management - Ensuring high throughput and low-latency API responses in high-traffic scenarios - Collaborating closely with cross-functional teams for end-to-end delivery - Implementing best practices for code quality, testing, logging, and observability - Participating in architecture discussions and contributing to technical roadmaps - Mentoring junior developers and conducting code reviews Your qualifications should include: - 5+ years of experience in backend development using Java / Spring Boot - Strong knowledge of RESTful APIs, microservices architecture, and asynchronous processing - Experience working with travel APIs (GDS/NDC/LCC/Hotel APIs) - Solid understanding of multithreading, performance tuning, and memory management - Experience with RDBMS (MySQL/PostgreSQL) and NoSQL (MongoDB, Redis) - Knowledge of cloud platforms (AWS/GCP/Azure) and CI/CD pipelines - Familiarity with OAuth, token-based authentication, and API security best practices - Exposure to caching techniques for fares, availability, and hotel inventory - Experience with containerization (Docker, Kubernetes) Nice to have skills include experience in building flight/hotel search engines, dynamic pricing models, and knowledge of GraphQL, gRPC, or event-driven architecture. In addition to the above, the job type is full-time and permanent with benefits including health insurance and provident fund. The work location is in Gurgaon, Haryana, requiring reliable commuting or planning to relocate before starting work.,