Senior Java Engineer-- (Fully Remote | Long-term Contract)

Beacon Hill is a premier National Information Technology Staffing Group, and they are seeking a senior-level Java engineer to support a large-scale modernization effort focused on converting legacy ETL and mainframe-driven backend logic into modern Java services. The role involves mentoring others, reviewing and refactoring existing Java code, and collaborating with Principal Engineers to navigate complex legacy data flows.

Responsibilities:

• Support backend processing related to a large-scale data modernization initiative
• Review and refactor existing Java code
• Extract and translate legacy ETL and mainframe logic into Java-based services
• Collaborate closely with Principal Engineers and legacy system subject matter experts
• Learn and navigate complex legacy data flows and integration points
• Lead and contribute to ETL-to-Java modernization efforts
• Help define Java development patterns and backend architecture standards
• Mentor engineers transitioning from legacy or ETL-based development into Java
• Improve consistency, maintainability, and scalability of backend services
• Support future modernization initiatives as additional projects come online

Requirements:

• Senior-level Java engineering experience (Java 11+)
• Strong backend development background
• Experience modernizing legacy systems or rewriting ETL / batch logic
• Demonstrated experience using AI tools for development and analysis
• Experience with APIs, messaging systems, and backend processing pipelines
• Comfortable working in ambiguous environments with limited documentation
• Strong collaboration and communication skills
• Proven ability to mentor engineers and support team capability growth
• Cloud experience (AWS, Lambda, S3)
• Container platforms (OpenShift, Argo CD)
• Messaging systems (Kafka, RabbitMQ)
• Mainframe-adjacent experience or tools such as Zowe