Senior Java Engineer / Solution Architect

SNI is serving as a trusted IT Outsourcing partner carrying out successful projects worldwide for prestigious firms.

• Strong commercial experience with Java and the Spring Framework.
• Experience working with large, complex legacy systems, ideally monolithic applications.
• Good understanding of distributed systems architecture.
• Practical experience with REST APIs, SOAP web services, and system integrations.
• Strong database experience, preferably with Oracle.
• Understanding of service decomposition, bounded contexts, domain-driven design, or similar architectural approaches.
• Experience designing systems with asynchronous communication using queues, Kafka, or other message brokers.
• Knowledge of transaction handling, eventual consistency, retry mechanisms, dead-letter queues, and failure recovery.
• Experience with observability concepts such as logging, monitoring, tracing, correlation IDs, and operational dashboards.
• Understanding of scalability patterns including idempotent processing and duplicate message prevention.
• Ability to evaluate trade-offs between synchronous REST communication and asynchronous messaging.
• Strong analytical and problem-solving skills.
• Ability to communicate architectural decisions clearly to both technical and non-technical stakeholders.

• Analyze the existing monolithic trading platform and define a service decomposition strategy.
• Identify service boundaries based on core business capabilities.
• Support the migration from a monolith to service-oriented/microservices architecture.
• Design service and external system communication using REST APIs, messaging, queues, and Kafka.
• Define data ownership, database strategy, synchronization, and eventual consistency.
• Design resilient failure handling, monitoring, observability, and audit mechanisms.
• Address scalability challenges including idempotency, concurrency, duplicate message handling, and horizontal scaling.
• Collaborate with business analysts, developers, architects, QA, and production support teams.
• Ensure the architecture delivers performance, reliability, regulatory compliance, and operational stability.

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