Specialized Software Developer

Our client, a leading telecommunications provider, is seeking a Senior Java/AWS Engineer – Transactional Systems. This individual will play a key role in developing and modernizing large-scale transactional systems that track customer experiences during service interruptions. The ideal candidate will have strong Java and AWS expertise, along with a deep understanding of transactional systems, microservices architecture, and reliable transaction processing. This role will support ongoing modernization efforts, including migrating legacy applications from TIBCO to Java and AWS.

Contract Type and Duration:
Contract Work

Location:

St. Louis, MO

Work Arrangement:
Hybrid

• Design, develop, and maintain Java code for large-scale transactional systems and microservices
• Contribute to ongoing modernization initiatives, including migrating legacy applications from TIBCO to Java and AWS
• Support the migration of five applications, with two planned for this year and three planned for next year
• Design and implement reliable transactional workflows, ensuring data consistency, transaction integrity, and predictable system behavior across interconnected components
• Develop and maintain event-driven architectures and messaging integrations using Kafka, Amazon SQS, and Amazon Event Bridge
• Collaborate across complex, interconnected systems involving numerous components, dependencies, and data points to deliver accurate and reliable customer outage information
• Troubleshoot complex system behaviors, identify potential failure points, and contribute ideas to improve system reliability, scalability, and maintainability

• Strong hands-on Java development experience, including building and maintaining enterprise-scale applications
• Strong AWS experience, with the ability to develop and support cloud-based applications
• Demonstrated experience designing, developing, and supporting transactional systems, including a strong understanding of transaction life cycles, data consistency, and reliable transaction processing
• Strong understanding of microservices architecture and how distributed components interact within complex systems
• Experience building reliable applications that handle complex business workflows, data dependencies, and interconnected services
• Experience developing, modernizing, or migrating legacy enterprise applications
• Strong analytical and problem-solving skills, with the ability to navigate complex systems and troubleshoot issues across multiple components

• Hands-on experience with Apache Kafka for event streaming and asynchronous communication
• Experience with Amazon SQS for message queuing and decoupled system integrations
• Experience with Amazon Event Bridge for event-driven architectures and event routing
• Direct experience migrating applications from TIBCO to Java and AWS
• Experience modernizing legacy transactional platforms into cloud-native microservices
• Experience supporting large-scale telecommunications, network operations, outage management, or other complex enterprise systems
• Experience with event-driven systems that aggregate multiple data points into a consistent, reliable view of business events and customer impact

• Willingness to speak up, ask questions, share ideas, and seek clarification rather than make assumptions
• Ability to work effectively with experienced engineers and contribute to technical discussions and design decisions
• Comfortable working in a fast-moving environment where priorities may shift due to outages or changing business needs
• Able to understand complex interactions between services, dependencies, data flows, and transactional processes…