Sr. Java Full Stack Engineer

Overview

Rimini Street is seeking a Sr. Java Full Stack Engineer in Hyderabad, India, to build the Agentic ERP Platform, which enables AI agents to interact with legacy ERP systems including SAP, Oracle E-Business Suite and JD Edwards. The role contributes across backend services, MCP servers, AI agent integration and frontend interfaces.

What you'll do

• Design and develop backend services using Java 21 and Quarkus, including MCP servers, REST APIs and platform services.
• Build and maintain integration components that connect AI agents to enterprise ERP systems (SAP, Oracle EBS, JD Edwards).
• Develop data access layers using PostgreSQL, including working with pgvector for vector storage and similarity search.
• Implement resilience patterns (circuit breakers, retries, bulkheads) using Resilience4j.
• Write clean, testable, well-documented code following established engineering standards and architectural patterns.
• Develop AI agent components using Python and frameworks such as Pydantic AI or LangChain4j.
• Integrate with LLM services through the LiteLLM gateway, implementing prompt templates, tool calling and response handling.
• Build and maintain RAG (Retrieval-Augmented Generation) pipelines for contextual knowledge retrieval.
• Implement orchestration workflows using Restate for multi-step agent processes with human-in-the-loop checkpoints.
• Build user interfaces using Angular and TypeScript, contributing to the platform's component library and design system.
• Develop human-in-the-loop interfaces that allow users to supervise, approve and intervene in agent actions.
• Implement responsive, modern layouts using CSS3, Tailwind CSS and Angular Material or similar component frameworks.
• Create dashboards, admin panels and monitoring views for agent performance and system health.
• Build reusable UI components with clean HTML5 semantics, SCSS/CSS architecture and consistent styling patterns.
• Ensure accessible (WCAG compliant), performant frontend experiences across browsers and devices.
• Work with design specifications and wireframes to translate UX designs into pixel-accurate implementations.
• Participate in code reviews, design discussions and technical design reviews.
• Write unit tests and integration tests, and contribute to automated testing frameworks.
• Contribute to CI/CD pipeline development and deployment automation.
• Instrument code with OpenTelemetry for distributed tracing, metrics and logging.
• Collaborate with team members across time zones in a virtual team environment.
• Contribute to technical documentation, architecture decision records and knowledge sharing.

What you'll need

• 3.5+ years of professional software engineering experience in full stack development.
• Strong backend development experience with Java (Java 11+); experience with Quarkus or Spring Boot.
• Working proficiency in Python; experience building services or scripts in Python.
• Frontend development experience with Angular (v14+), TypeScript and modern CSS (Tailwind, SCSS or CSS-in-JS).
• Experience building component libraries or contributing to design systems.
• Experience with relational databases, particularly PostgreSQL.
• Familiarity with RESTful API design and microservices architecture.
• Experience with Git, CI/CD pipelines and modern development workflows.
• Experience working in agile teams with iterative delivery practices.
• Java 11+ (Java 17/21 preferred) with strong understanding of modern Java features.
• Experience with Quarkus or Spring Boot for building microservices and REST APIs.
• Python proficiency for AI/ML integration work and scripting.
• Angular (v14+) and TypeScript for frontend development; strong component architecture skills.
• Solid CSS3/SCSS skills including responsive design, flexbox and grid layouts.
• Experience with Tailwind CSS or similar utility-first CSS frameworks.
• Proficiency with HTML5 semantics and modern web standards.
• PostgreSQL and SQL; experience with data modeling and query optimization.
• RESTful API design and implementation; familiarity with OpenAPI/Swagger.
• Git version control and collaborative development practices.
• Understanding of containerization (Docker) and basic Kubernetes concepts.
• Strong problem-solving skills with the ability to debug complex issues across multiple layers of the stack.
• Ownership mentality, taking responsibility for features from design through production deployment.
• Ability to learn quickly and adapt to new technologies, frameworks and domains.
• Good communication skills; able to discuss technical approaches clearly with team members.
• Attention to detail and commitment to code quality, testing and documentation.
• Collaborative mindset; comfortable working in a distributed team across time zones.
• Self-motivated and able to work independently in a remote environment.
• Fluent in English (written and verbal).

Nice to have

• Experience with AI/ML frameworks: Pydantic AI, LangChain or LangChain4j.
• Familiarity with LLM integration patterns, prompt engineering and tool calling.
• Experience with vector databases (pgvector, Qdrant) and embedding models.
• Experience with Angular Material, PrimeNG or similar Angular component libraries.
• Knowledge of web accessibility standards (WCAG 2.1) and cross-browser compatibility.
• Experience with frontend testing frameworks (Jasmine, Karma, Cypress or Playwright).
• Knowledge of MCP (Model Context Protocol) or similar agent-tool integration patterns.
• Experience with Restate, Temporal or similar workflow orchestration frameworks.
• Familiarity with OpenTelemetry, Jaeger or Prometheus for observability.
• Experience with enterprise integration patterns: messaging, event-driven architecture, RFC/BAPI.
• Knowledge of SAP or Oracle EBS integration technologies.
• Experience with Resilience4j or similar resilience libraries.
• Familiarity with LiteLLM or similar LLM gateway tools.
• Bachelor's degree in Computer Science, Engineering or related field, or equivalent practical experience.
• Experience in enterprise software or platform product development.
• Exposure to ERP systems (SAP, Oracle, JD Edwards) in any capacity.
• AWS or Kubernetes certifications.
• Contributions to open source projects.

Details

• Location: Hyderabad, India.
• Travel: minimal; occasional travel for team meetings or training.
• Language: fluent English required (written and verbal).