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
Similar Jobs
Aerospace • Artificial Intelligence • Logistics • Machine Learning • Software • Transportation • Defense
You will manage data flows for ASI's defense products, leveraging modern data engineering skills to ensure reliable data for decision-making.
Top Skills:
AirflowCmf-BDagsterFlinkGraphQLGrpcJreap-CJSONKafkaKubernetesProtobufRestSparkTemporalXML
Artificial Intelligence • Fintech • Payments • Business Intelligence • Financial Services • Generative AI
The Senior Manager, Risk Operations Strategy will enhance risk management by leveraging data analytics, leading risk assessments, managing cross-functional projects, and optimizing operational strategies.
Top Skills:
Bi ToolsDatabricksPythonSQL
Artificial Intelligence • Fintech • Payments • Business Intelligence • Financial Services • Generative AI
The Product Marketing Manager will bridge gaps between customers and product teams, drive product launches, and develop marketing strategies to enhance product adoption and sales success.
Top Skills:
AIData-Driven Insights
What you need to know about the Boston Tech Scene
Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.
Key Facts About Boston Tech
- Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
- Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
- Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
- Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories
