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Mainframes Developer Jobs in Maryland (NOW HIRING)

My3Tech Inc

Mainframe Engineer

Riverdale, MD · On-site

$49.25 - $63.25/hr

We are looking for an experienced Mainframe Developer with at least 5 years of expertise in COBOL, CICS, TSO, and JCL. The need is for 40hrs per week in a hybrid environment requiring a minimum for 2 ...

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 ...

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Samprasoft

Mainframe

Owings Mills, MD · On-site

$46.75 - $60/hr

Mainframe Developer Contract to hire role (Not open for sponsorship) The project will involve broad mainframe technologies. Responsibilities: * Work with the existing FEP Bridge teams to support ...

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 ...

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Keylent Inc

Z/OS Mainframe Systems Programmer

Gwynn Oak, MD · On-site

$57.25 - $73/hr

Z/OS Mainframe Systems Programmer Location: Woodlawn, MD Duration: Long Term Education / Experience: Doctorate and 03 years' experience, Masters and 05 years' experience, Bachelors and 07 years ...

Kaav Inc.

Mainframe z/OS System Programmer

Bethesda, MD · On-site

$59 - $75/hr

IBM z15 and z16 Mainframe and z/OS 2.5 or Higher Operating System Support Supporting IBM z15 and ... Primary tasks include MVS systems programming activities such as system security compliance to ...

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 ...

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

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 ...

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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
Senior Mainframe Developer (Onsite)

Senior Mainframe Developer (Onsite)

Serigor, Inc.

Columbia, MD • On-site

$48.25 - $62/hr

Full-time

Posted 11 days ago

Job description

Job Title: Senior Mainframe Developer (Onsite)
Location: Columbia, MD
Job Type: Full-Time
Job Description:
  • We are seeking a highly experienced Senior Mainframe Developer to support large-scale enterprise modernization initiatives focused on transforming legacy Mainframe applications into modern, cloud-ready .NET platforms.
  • This role requires deep expertise in Mainframe technologies, enterprise modernization, and technical leadership. The ideal candidate will lead Mainframe analysis and modernization activities, collaborate with cross-functional engineering teams, and serve as the primary Mainframe technical lead throughout the modernization lifecycle.
  • Candidates should have strong experience analyzing complex legacy applications, documenting business rules and system dependencies, supporting AI-assisted modernization efforts, and working closely with client stakeholders and modernization teams.
  • Experience with automated code conversion tools, modernization factories, and enterprise transformation platforms is highly preferred.

Key Responsibilities:
  • Analyze, maintain, support, and modernize large-scale Mainframe applications and legacy systems
  • Work extensively with:
    • COBOL
    • JCL and PROCs
    • CICS
    • VSAM
    • DB2
    • IMS
    • BMS Maps
    • Batch processing environments
  • Lead Mainframe modernization discussions, workshops, and technical assessments with client stakeholders
  • Serve as the primary Mainframe technical lead for modernization activities, dependencies, and integration efforts
  • Analyze legacy business workflows, system integrations, data structures, and application dependencies
  • Recommend modernization, migration, remediation, and transformation strategies
  • Support AI-assisted code conversion, remediation, and modernization workflows
  • Document business rules, technical processes, data mappings, reconciliation logic, and functional behavior
  • Collaborate closely with .NET developers, architects, QA teams, DevOps engineers, and business analysts
  • Lead source code inventory analysis, dependency mapping, and system assessment activities
  • Support functional equivalence validation, reconciliation, testing, and stabilization efforts
  • Assist with enterprise data migration and synchronization between legacy and modernized systems
  • Troubleshoot production issues, optimize batch workloads, and support application enhancements
  • Participate in modernization factory workflows including automated analysis, remediation, and transformation activities
  • Prepare technical documentation, modernization artifacts, operational runbooks, and system analysis reports
  • Provide mentorship and technical leadership to modernization teams

Required Qualifications:
  • 15+ years of hands-on experience with enterprise Mainframe applications
  • Strong expertise with:
    • COBOL
    • JCL and PROCs
    • CICS
    • VSAM
    • DB2
    • IMS
    • BMS Maps
    • Batch processing systems
  • Strong understanding of:
    • Enterprise Mainframe architectures
    • Transaction processing systems
    • Batch processing frameworks
    • Legacy application workflows
    • Enterprise integration patterns
  • Extensive experience supporting large-scale legacy modernization initiatives
  • Experience working with automated code analysis tools, transformation pipelines, and modernization accelerators
  • Strong client-facing communication and stakeholder management skills
  • Experience serving as a technical lead on modernization programs
  • Strong understanding of enterprise business processes, data flows, and system dependencies
  • Exposure to:
    • Distributed systems
    • APIs and middleware
    • Hybrid integration architectures
    • Cloud modernization initiatives
  • Familiarity with AWS and/or Azure environments
  • Strong troubleshooting, analytical, and problem-solving skills
  • Ability to lead technical modernization activities independently in fast-paced enterprise environments
  • Excellent written and verbal communication skills

Preferred Qualifications
  • Exposure to:
    • C#
    • .NET / .NET Core
    • Java
    • Modern distributed application environments
  • Hands-on experience with:
    • Mainframe-to-.NET transformation
    • AI-assisted code conversion
    • Automated remediation workflows
    • Functional equivalence validation
    • Modernization factory delivery models
  • Experience working in Agile/Scrum delivery environments
  • Experience supporting government, financial, healthcare, tax, or other large enterprise modernization programs
  • Experience working with modernization factories, automated conversion tools, and migration accelerators
  • Familiarity with cloud-native modernization and hybrid cloud integration strategies

Technical Environment:
Mainframe Technologies:
  • Mainframe
  • COBOL
  • JCL and PROCs
  • CICS
  • VSAM
  • IMS
  • DB2
  • BMS Maps
  • Batch Processing Systems

Databases:
  • DB2
  • Microsoft SQL Server

Modernization & Integration:
  • Mainframe-to-.NET Migration
  • AI-Assisted Code Conversion
  • Automated Code Remediation
  • Functional Equivalence Testing
  • Enterprise Transformation Platforms
  • APIs and Middleware
  • System Integration

Cloud & Infrastructure:
  • AWS
  • Azure
  • Hybrid Cloud Architectures

Delivery & Operations:
  • Production Support
  • Technical Analysis
  • Migration Strategy
  • Source Code Analysis
  • Dependency Mapping
  • System Reconciliation
  • Technical Leadership

Apply