Java Solution Designer: Mesh API & Microservices

XPT Software Australia Pty Ltd; Sydney; On-site; AUD 140,000 - 200,000; Full time

Job summary

XPT Software Australia Pty Ltd is seeking an experienced Java/Mesh API architect to design end-to-end solutions for enterprise systems in Sydney. You will define API contracts, build scalable microservices, and guide teams across DevOps and infrastructure to ensure security and performance.

Responsibilities include modernizing architectures, producing design artifacts, and ensuring maintainability. The role requires hands-on leadership in API design and integration with Mesh API architectures.

Qualifications

• Strong hands-on experience with Java 8/11/17+.
• Excellent knowledge of Spring Boot, Spring Framework, Spring Security.
• Strong experience with RESTful APIs and Microservices.
• Good understanding of Java design patterns, SOLID principles, and clean architecture.
• Experience with asynchronous/event-driven architectures is desirable.
• Strong experience in API design and integration.
• Experience with Mesh API / API Mesh architectures and integration of multiple backend services.
• Understanding of API gateways, service discovery, routing, aggregation/orchestration, authentication, authorization, throttling, and API versioning.
• Experience with OpenAPI/Swagger and API lifecycle management.
• Knowledge of OAuth 2.0, JWT, mTLS, and enterprise API security.

Responsibilities

• Design end-to-end solutions using Java, Spring Boot, Microservices, REST APIs, Mesh.
• Define application, integration, and API architecture aligned with enterprise standards.
• Design and implement Mesh API solutions for integrating multiple services, systems, and data sources.
• Define API contracts, service interfaces, data models, authentication, authorization, and error-handling standards.
• Design scalable and resilient microservices architectures.
• Review existing applications and recommend modernization, decomposition, and integration strategies.
• Produce solution design documents, architecture diagrams, and API specifications.
• Ensure solutions meet security, performance, scalability, availability, observability, and maintainability.
• Conduct technical design reviews and provide guidance to Java development teams.
• Troubleshoot complex integration and production issues and perform root-cause analysis.
• Support CI/CD, cloud deployment, containerization, and DevOps practices where required.
• Evaluate new technologies and recommend appropriate solutions based on business and technical requirements.

Skills

Java

Spring Boot

Spring Framework

Spring Security

REST APIs

Microservices

Design patterns

SOLID

Clean architecture

Async/event-driven

API design

Mesh API

API gateways

OpenAPI/Swagger

OAuth 2.0

JWT

mTLS

Tools

OpenAPI/Swagger

OAuth 2.0

JWT

mTLS

Job description

XPT Software Australia Pty Ltd is seeking an experienced Java/Mesh API architect to design end-to-end solutions for enterprise systems in Sydney. You will define API contracts, build scalable microservices, and guide teams across DevOps and infrastructure to ensure security and performance.

Responsibilities include modernizing architectures, producing design artifacts, and ensuring maintainability. The role requires hands-on leadership in API design and integration with Mesh API architectures.