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Mainframes Developer Jobs in Maryland (NOW HIRING)

GBTI Solutions Inc

Java Developer

Lanham, MD · On-site +1

$51 - $65.75/hr

Perform integration with mainframe systems (COBOL/DB2) via web services and APIs * Conduct unit ... Bachelors degree in Computer Science, Software Engineering, or related field * At least 8 years of ...

Polar IT Services

$88.80K - $114.80K/yr

Conduct process reverse engineering to uncover undocumented logic embedded in legacy systems ... Mainframe Exit Support (NICE TO HAVE) Translate legacy mainframe functionality into clear business ...

TekWissen

DB2 Consultant

Bethesda, MD

... engineering, and systems integration. www.tekwissen.com Should be able to Designs, develops and supports application solutions with focus on mainframe DB2 applications including ability to query DB2 ...

TecTammina

Sr. WebFOCUS developer

Baltimore, MD

My Client is in need of a WebFOCUS developer with Version 8.x and Version 7.x experience The ... Knowledge of both client/server and mainframe-based systems. Strong background in coding and ...

GBTI Solutions Inc

COBOL Developer

Lanham, MD · On-site +1

$50.25 - $67.75/hr

Job Summary Serves as a technical leader providing full lifecycle support for legacy IRS mainframe systems within the MFRA Branch. This role is responsible for analysis, design, coding, testing, and ...

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Mainframes Developer information

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What are popular job titles related to Mainframes Developer jobs in Maryland? For Mainframes Developer jobs in Maryland, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Maryland look for? The top searched job categories for Mainframes Developer jobs in Maryland are:
Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Maryland as of May 2026, with employment types broken down into 21% Full Time, and 79% Contract. Highlights an 92% In-person, and 8% Hybrid job distribution.
Java Developer

Java Developer

GBTI Solutions Inc

Lanham, MD • On-site, Remote

$51 - $65.75/hr

Full-time

Posted 4 days ago

Job description

Job Summary
Leads the design, development, integration, and modernization of Java-based applications supporting MFRA Branch systems while ensuring seamless interoperability with legacy mainframe environments.
Key Responsibilities
  • Design, develop, test, and deploy Java EE applications using Spring, Hibernate, JAX-RS, and modern frameworks
  • Support Filing Season, Mid-Year, and legislative changes (e.g., OB3, Trump Accounts)
  • Perform integration with mainframe systems (COBOL/DB2) via web services and APIs
  • Conduct unit, regression, performance, and security testing (JUnit, AppScan)
  • Support CI/CD pipelines using Jenkins, Maven, GitHub, and Red Hat JBoss EAP
  • Troubleshoot production issues and provide Level 3 support
  • Develop and maintain OneSDLC documentation and knowledge transfer materials
Minimum Qualifications
  • Bachelors degree in Computer Science, Software Engineering, or related field
  • At least 8 years of Java development experience (Java EE 6+)
  • Strong expertise in object-oriented design, Spring Framework, Hibernate, RESTful services, and front-end technologies (JSF/PrimeFaces or React)
  • Experience with Linux RHEL, Jenkins, Maven, ANT, GitHub, and AppScan
  • Java certification preferred
  • Experience supporting IRS tax processing systems is a significant plus

Flexible work from home options available.