As a Senior Developer, you will modernize COBOL systems to Java, enhancing functionality and performance while collaborating with stakeholders and ensuring coding standards are met.
This is a remote position.
Location: Remote
Summary:
BizFirst is assisting our client with hiring a Senior COBOL / Java / Spring Batch Developer to support a large-scale federal modernization initiative. Our client is a specialized government contractor supporting defense financial systems modernization, focused on transforming legacy mainframe applications into modern, scalable, and maintainable Java-based architectures.
What You Will Do
As a Senior COBOL / Java / Spring Batch Developer, you will support the analysis, conversion, and modernization of complex legacy mainframe systems into a modern Java environment. You will work closely with technical and functional stakeholders to translate business logic from COBOL into Java/Spring Batch, ensuring functional equivalence, improved performance, and alignment with modern development standards. Your work will directly contribute to a multi-phase effort to modernize critical financial systems and reduce technical debt.
Responsibilities
- Analyze and interpret complex COBOL codebases and translate business logic into Java applications
- Design, develop, and implement batch-processing solutions using Java and Spring Batch
- Support automated code conversion efforts and validate functional equivalence of converted systems
- Refactor legacy logic into modular, maintainable, and scalable Java-based solutions
- Troubleshoot production issues and perform root cause analysis across legacy and modern systems
- Collaborate with system analysts, data architects, testers, and subject-matter experts
- Ensure adherence to coding standards, security requirements, and documentation practices
- Support integration of modernized code into enterprise systems and future microservices architecture
Required Qualifications
- Bachelor’s or Master’s Degree in Computer Science, Information Technology, or related field
- Minimum of 10 years of experience in software development with strong expertise in COBOL and Java
- Hands-on experience with Spring Batch for enterprise batch processing
- Experience working with z/OS and JCL in mainframe environments
- Proven ability to analyze, maintain, and modernize legacy mainframe applications
- Strong troubleshooting and debugging experience across complex systems
- Strong written and verbal communication skills
- U.S. Citizenship required, Active DoD Secret clearance required
Preferred Qualifications
- Experience supporting large-scale legacy system modernization efforts
- Familiarity with mainframe technologies such as DB2, VSAM, IDMS, or similar systems
- Experience with microservices architecture and modern application design patterns
- Experience working within federal or DoD environments
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