Senior Java API DeveloperCeloxis Technologies Private Limited • Pune, Republic Of India, IN
Senior Java API Developer
Celoxis Technologies Private Limited • Pune, Republic Of India, IN
4 hours ago
Job descriptionBackend : Spring Boot 3.X, Spring MVC, Spring AOP, Spring WebSocket ORM : Apache Torque with Criteria-based query building Database : PostgreSQL with pgvector for AI embeddings Security : OneLogin SAML, Google Authenticator, jBCrypt Integrations : QuickBooks SDK, Zapier, Google services, MPXJ Service Layer Pattern and Repository Pattern Singleton, Factory, and Decorator patterns Event-driven architecture (pub / sub, event listeners) Multi-layered architecture design Understanding of domain-driven design principles PostgreSQL or similar relational databases Transaction management and data integrity Query optimization and performance tuning Database migration and schema management Experience with Criteria based query builder At least 2 years working with Spring Framework Experience with enterprise-level applications Understanding of multi-tenant architectures (preferred) Exposure to project management or ERP systems (nice to have) Problem Solving : Ability to navigate and understand large, complex codebases Code Quality : Writing maintainable, well structured code following established patterns Collaboration : Working with cross-functional teams (frontend, QA, product) Documentation : Creating clear technical documentation and code comments Learning Agility : Quickly understanding new domains and technologies A ttention to Detail : Ensuring data integrity and business rule compliance in complex workflows Frontend Basics : Understanding of React and REST API consumption patterns Integration Experience : Webhooks, third-party API integration (QuickBooks, Zapier, etc.) Background Processing : Quartz scheduler or similar job scheduling frameworks Reporting Engines : Experience with data visualization and reporting libraries AI / ML Integration : LangChain4j, Spring AI, or similar AI frameworks Complex Domain : Work on sophisticated business logic Architecture : Learn advanced patterns in multi-tenancy, event-driven design, and extensible systems Modern Tech : Actively integrating AI / ML capabilities into production Scale : Navigate and contribute to a large, mature codebase with established patterns Impact : Your work directly affects project management workflows for enterprise clients\ Growth : Exposure to diverse technical challenges from scheduling algorithms to AI integration
Backend Java Developer
About the Project
Join our team and work on a mature, feature-rich Project & Service Automation (PSA) platform, an enterprise-grade solution that powers project management, resource planning, time tracking, expense management, and business reporting for global customers. Our platform supports multi-tenant environments with complex business workflows, and we are actively expanding its capabilities with advanced AI / ML features.
Key Responsibilities
- Design and implement RESTful APIs following established architectural pattern
- Develop and maintain backend features for project management, resource allocation, time tracking, and expense management modules.
- Participate in AI / ML feature development using LangChain4j and Spring AI frameworks
- Work with ORM to build complex database queries and optimize data access layers
- Implement business logic for approval workflows and process automation
- Integrate third-party services (accounting systems, CRM platforms, authentication providers)
- Develop scheduled background, data synchronization, and forecasting
- Ensure proper security implementation through ACL and role based access control
Required Technical Skills
Technologies & Frameworks
Architecture & Design Patterns
Database & Data Management
Experience Level
5+ years of professional Java backend development experience with :
Soft Skills & Work Approach
Desired Technical Skills
Why This Role is Interesting
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Senior Java Developer • Pune, Republic Of India, IN
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