Sr. COBOL / Java / Spring Batch Developer
BizFirst
- New York, New York, United States
- New York, New York, United States
Über
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
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
BizFirst LLC is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.
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Sprachkenntnisse
- English
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