Java Software Engineer

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 - Backend: 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 Architecture & Design Patterns - 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 Database & Data Management - 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 Experience Level 5+ years of professional Java backend development experience with: - 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) Soft Skills & Work Approach - 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 - Attention to Detail: Ensuring data integrity and business rule compliance in complex workflows Desired Technical Skills - 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 Why This Role is Interesting - 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