ZipRecruiter

Log In

1

Mainframe Testing Jobs in Maryland (NOW HIRING)

Serigor

Senior Mainframe Developer

Columbia, MD · Hybrid

Senior Mainframe Developer Location: Columbia, MD Job Type: Full-Time Position Overview We are ... Support reconciliation, validation, testing, and stabilization activities * Assist with enterprise ...

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 ... Responsible for unit testing and validation against desired outcomes. The resource is expected to ...

Deloitte

Mainframe Techno/Functional Manager

Baltimore, MD · Hybrid

$48.75 - $62.50/hr

As an experienced Mainframe Techno/Functional Manager ,you will have the ability to share new ideas ... Oversee solution design, configuration, integration, testing, and deployment across complex ...

BDR Solutions LLC

Sr. COBOL /CICS/DB2 Developer

Lanham, MD · On-site

$49 - $62.75/hr

The role requires deep, hands-on IBM mainframe expertise and the ability to work within IRS ... Perform iSAT testing and FIT readiness activities; support FIT defect resolution and post ...

TriTech Enterprise Systems, Inc.

Testers

Lanham, MD · On-site

... Mainframe for multiple IRS applications using Oracle, ETL (Informatica), JBoss, Java, and in ... Demonstrated experience in testing data loading jobs implemented in ETL Informatica/Control-M tool ...

Serigor, Inc.

Senior .NET Developer (Onsite)

Columbia, MD · On-site

$53.75 - $70.75/hr

Collaborate with Mainframe SMEs, architects, QA teams, DevOps engineers, and business analysts * Support remediation, integration testing, regression testing, and functional equivalence validation

next page

Showing results 1-20

All JobsMainframe Testing JobsMainframe Testing Jobs in Maryland

Mainframe Testing information

See Maryland salary details

$9

$51

$70

How much do mainframe testing jobs pay per hour?

As of Jun 16, 2026, the average hourly pay for mainframe testing in Maryland is $51.81, according to ZipRecruiter salary data. Most workers in this role earn between $45.72 and $58.80 per hour, depending on experience, location, and employer.

What are some common challenges faced by professionals working in Mainframe Testing?

Professionals in Mainframe Testing often encounter challenges such as understanding legacy code, dealing with limited documentation, and adapting to the evolving integration of mainframe and modern systems. Testers must also effectively validate large volumes of data, ensure compatibility across interconnected applications, and manage tight release deadlines. Collaborating closely with developers, business analysts, and operations teams is essential for clarifying requirements and troubleshooting issues. Successfully overcoming these challenges requires persistence, a willingness to learn, and strong teamwork skills.

What are the key skills and qualifications needed to thrive in the Mainframe Testing position, and why are they important?

To thrive in Mainframe Testing, you need strong analytical abilities, a solid understanding of mainframe environments and programming languages like COBOL, JCL, and experience with testing methodologies. Familiarity with tools such as IBM Mainframe, CA7/Endevor, and mainframe testing frameworks, as well as ISTQB certification, is highly valuable. Attention to detail, strong problem-solving skills, and effective communication are essential soft skills in this role. These competencies help ensure that complex mainframe systems are thoroughly tested, reliable, and meet business requirements.

What is a Mainframe Testing job?

A Mainframe Testing job involves validating and verifying applications running on mainframe systems to ensure they function correctly, efficiently, and securely. Testers perform various types of testing, including functional, integration, regression, and performance testing, using tools like JCL, COBOL, DB2, and CICS. They analyze test results, identify defects, and collaborate with developers to resolve issues. Mainframe testers need knowledge of batch processing, databases, and system interactions to ensure seamless operations. The role is critical in industries like banking, insurance, and healthcare, where mainframes handle high-volume transactions.

What are popular job titles related to Mainframe Testing jobs in Maryland? For Mainframe Testing jobs in Maryland, the most frequently searched job titles are:
What job categories do people searching Mainframe Testing jobs in Maryland look for? The top searched job categories for Mainframe Testing jobs in Maryland are:
What cities in Maryland are hiring for Mainframe Testing jobs? Cities in Maryland with the most Mainframe Testing job openings:
Mainframe Testing jobs near you
Infographic showing various Mainframe Testing job openings in Maryland as of June 2026, with employment types broken down into 83% Full Time, and 17% Contract. Highlights an 83% In-person, and 17% Remote job distribution, with an average salary of $107,755 per year, or $51.8 per hour.
Senior Mainframe Developer (Onsite)

Senior Mainframe Developer (Onsite)

Serigor, Inc.

Columbia, MD • On-site

$48.25 - $62/hr

Full-time

Posted 21 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