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Mainframes Developer Jobs in Maryland (NOW HIRING)

JS Consulting

Sr. Mainframe Developer

Woodlawn, MD · On-site

$51 - $65.50/hr

Job Title- Sr. Mainframe Developer Project Location - Woodlawn, MD (5 days per week onsite) Duration- 6+ months contract Skills: Strong experience with IBM z/OS (OS/390/MVS) environment developing ...

Anivas Tech LLC

Mainframe SRE

Upper Marlboro, MD · On-site

$48.50 - $62.50/hr

Collaborate with DevOps and development teams to extend CI/CD practices into mainframe pipelines * Document standard operating procedures, runbooks, and post-incident reviews * Participate in on-call ...

kgs

Mainframe Project Manager

Baltimore, MD · On-site

$48.75 - $62.50/hr

OCSS is responsible for application programming, data transmission, and security access for OCSS ... DB2/JCL/COBOL/VSAM/SFTP/GDG's and other mainframe skills preferred * TSO required * Sql Server, My ...

MissionStaff

COBOL Developer

Woodlawn, MD · On-site

$52.25 - $70.75/hr

COBOL Developer We are seeking experienced COBOL Developers to support a large federal technology ... This is a strong opportunity for senior mainframe professionals who want to support a long-term ...

kgs

Mainframe Project Manager

Baltimore, MD · On-site

$48.75 - $62.50/hr

OCSS is responsible for application programming, data transmission, and security access for OCSS ... DB2/JCL/COBOL/VSAM/SFTP/GDG's and other mainframe skills preferred * TSO required * Sql Server, My ...

Koniag, Inc.

Mainframe Project Manager

Baltimore, MD · On-site

$90K - $110K/yr

OCSS is responsible for application programming, data transmission, and security access for OCSS ... DB2/JCL/COBOL/VSAM/SFTP/GDG's and other mainframe skills preferred * TSO required * Sql Server, My ...

Kyndryl

Fullstack Agentic AI Engineer

Laurel, MD · On-site

$50.25 - $64.50/hr

As a COBOL Mainframe Application Developer, you will work directly with the Department of Labor client personnel as a consultant to support development on their existing Unemployment and Disability ...

MissionStaff

COBOL Developer

Woodlawn, MD · On-site

$52.25 - $70.75/hr

SSA is seeking a COBOL Developer to support and modernize mission-critical mainframe systems. This is a highly impactful, hands-on role focused on maintaining and enhancing core applications that ...

Serigor, Inc.

Senior .NET Developer (Onsite)

Columbia, MD · On-site

$53.75 - $70.75/hr

Experience supporting Mainframe modernization, automated code conversion, and enterprise ... NET engineering standards and architecture principles * Develop RESTful APIs, gRPC services ...

Huntington

Mainframe Systems Engineer III

Hagerstown, MD

$171K - $203K/yr

The Mainframe Systems Engineer III candidate must have experience in one or more of the following disciplines: z/OS installation and customization, storage management, hardware configuration ...

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 ...

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Mainframes Developer information

Are mainframe engineers in demand?

Mainframes developers are in steady demand due to the continued use of mainframe systems in industries like finance, government, and healthcare. They require specialized skills in COBOL, JCL, and mainframe environments, and demand often depends on the organization's reliance on legacy systems. While some companies are transitioning to newer technologies, mainframe expertise remains valuable for maintaining critical infrastructure.

What is mainframe developer salary?

The salary for a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Skilled developers with expertise in COBOL, JCL, and mainframe environments tend to earn higher salaries, especially in industries like finance and government. Salaries may also vary based on the complexity of projects and the employer's size.

Is mainframe developer a good career?

Mainframe developers work with large-scale computer systems used by many organizations for critical applications. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL. As demand persists in industries such as finance and government, it can be a solid career choice for those with relevant skills and certifications.

Can mainframe be replaced by AI?

Mainframes are large-scale computing systems used for critical enterprise applications, and while AI can automate certain tasks and improve efficiency, it does not replace the core functions of mainframes. Mainframe developers focus on maintaining and optimizing these systems, often integrating AI tools to enhance performance but not replacing the hardware or fundamental role of mainframes in data processing. Skills in legacy systems, programming languages like COBOL, and system security remain essential for mainframe professionals.

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 July 2026, with employment types broken down into 45% Full Time, and 55% Contract. Highlights an 86% In-person, 2% Hybrid, and 12% Remote job distribution.
Sr. Mainframe Developer

Sr. Mainframe Developer

JS Consulting

Woodlawn, MD • On-site

$51 - $65.50/hr

Contractor

Posted 13 days ago

Job description

Job Title- Sr. Mainframe Developer

Project Location – Woodlawn, MD (5 days per week onsite)

Duration- 6+ months contract

Skills: Strong experience with IBM z/OS (OS/390/MVS) environment developing and maintaining JCL and COBOL, Dialog Manager, Endevor, z/OS, CLIS, JCL, and DB2 for application software systems.

Position Description:

  • Responsible for conforming to customer standards and requirements and will be involved in creating and maintaining code and database structures such as COBOL, Restructured Extended Executor (REXX), Job Control Language (JCL), CLIST, DB2, as well as numerous mainframe utility tools such as SYNCSORT, File-AID/Related Data XPERT (RDX), etc. Responsible for unit testing and validation against desired outcomes. The resource is expected to function as part of a team, maintain a high level of collaboration with SSA of customers, and must demonstrate excellent communication skills to ensure success.
  • Develop JCL and software code using customer defined standards and software engineering best practices
  • Evaluate impacts of database schema changes on existing software components
  • Investigate and repair application defects related to business logic, middleware, or database (DB2).
  • Design, develop, test, debug, and implement next-generation COBOL programs using software engineering, best practices and latest technologies
  • Create and update JCL for efficient batch processing
  • Evaluate the impact of new operating systems, or versions of COBOL and Endevor on programs.
  • Collaborate with internal teams and external vendors, offering technical advice and influencing key stakeholders to achieve strategic objectives and enhance Leidos business outcomes.
  • Investigate and repair application defects regardless of component: COBOL, business logic, CICS configurations, middleware, or database (PL/SQL and Data Modeling).
  • Brief management, customer, team, or vendors using written or oral skills at appropriate technical level for audience
  • All other duties as assigned or directed.?

Requirements  

  • Bachelor's Degree in Computer Science, Mathematics, Engineering or a related field.
  • Masters or Doctorate degree may substitute for required experience
  • 10+ years of experience with Mainframe.
  • Must be able to obtain and maintain a Public Trust. Contract requirement.

FACTORS TO HELP YOU SHINE (Required Skills)

These skills will help you succeed in this position:

  • Experience developing and maintaining COBOL applications including working with structures, copybooks, and CICS maps
  • Experience developing applications for use on IBM z/OS.
  • Experience debugging COBOL Programs, CLIST, PROC, COBOL error tracing, and using Visual Studio COBOL viewer.
  • Basic experience with CICS programs, including how COBOL programs interact with BMS maps that define to user interface.
  • Experience using Endevor with TADZ for reporting and analysis such as browsing, scanning elements, measuring usage statistics.
  • Working knowledge / experience with ISPF, TSO, JES, and Job Control Language (JCL).
  • Experience developing and modifying JCL for job execution and batch operations
  • Hands-on experience with batch and online processing.
  • Excellent communication and written skills
  • Experience with mainframe-based software configuration management systems such as Endevor.
  • Experience with Control-M or other mainframe-based job scheduling tools.
  • Detail oriented and committed to consistently completing repetitive production-like tasks on-time and error-free.
  • Ability to independently research problems and provide solutions.

HOW TO STAND OUT FROM THE CROWD (Desired Skills)

Showcase your knowledge of modern development through the following experience or skills:

  • Working knowledge of SAS and REXX.
  • Experience with Mainframe Assembler development.
  • Certification such as IBM Mainframe Developer Professional, Interskill - Mainframe Application Programmer - COBOL and IBM Enterprise COBOL for z/OS Programming
  • Solid knowledge of relational databases (PostgreSQL, DB2), and SQL
  • Experience with modern development software, tools, and methodologies.
  • Experience working on Agile projects and understanding Agile terminology.
  • Experience with DevOps and toolset (Git/Bitbucket, Docker, Jenkins, SonarQube)?

Education           

  • Bachelor's Degree with 7+ years of experience.
  • Must be able to obtain and maintain a Public Trust. Contract requirement.

Respectfully,