Java Engineer - Front-End

As a Backend Java Developer, you will be working on a mature Project & Service Automation (PSA) platform that powers project management, resource planning, time tracking, expense management, and business reporting for global customers. The platform supports multi-tenant environments with complex business workflows and is continuously growing with advanced AI/ML features. **Key Responsibilities:** - Design and implement RESTful APIs following established architectural patterns - 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 such as accounting systems, CRM platforms, and 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:** 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, Repository Pattern, Singleton, Factory, Decorator patterns, Event-driven architecture, Multi-layered architecture design, Understanding of domain-driven design principles - **Database & Data Management:** PostgreSQL or similar relational databases, Transaction management, Data integrity, Query optimization, Database migration, Schema management, Experience with Criteria based query builder **Experience Level:** - 6+ to 10 years of professional Java backend development experience - At least 2 years of experience working with the Spring Framework - Experience with enterprise-level applications - Understanding of multi-tenant architectures is preferred - Exposure to project management or ERP systems is a plus **Soft Skills & Work Approach:** - Problem Solving - Code Quality - Collaboration - Documentation - Learning Agility - Attention to Detail **Desired Technical Skills:** - Frontend Basics: Understanding of React and REST API consumption patterns - Integration Experience: Webhooks, third-party API integration - 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 As a Backend Java Developer in this role, you will have the opportunity to work on sophisticated business logic, learn advanced patterns in multi-tenancy, event-driven design, and extensible systems, actively integrate AI/ML capabilities into production, navigate and contribute to a large, mature codebase with established patterns, directly impact project management workflows for enterprise clients, and gain exposure to diverse technical challenges from scheduling algorithms to AI integration. As a Backend Java Developer, you will be working on a mature Project & Service Automation (PSA) platform that powers project management, resource planning, time tracking, expense management, and business reporting for global customers. The platform supports multi-tenant environments with complex business workflows and is continuously growing with advanced AI/ML features. **Key Responsibilities:** - Design and implement RESTful APIs following established architectural patterns - 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 such as accounting systems, CRM platforms, and 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:** 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, Repository Pattern, Singleton, Factory, Decorator patterns, Event-driven architecture, Multi-layered architecture design, Understanding of domain-driven design p