Top 426 Mainframe Application Developer Jobs

Senior COBOL/CICS/DB2 Developer
The C.A.S.E. Engineering Group —New Carrollton, MD
- $120,000 - $135,000 a year
- Weekends as needed
- Hybrid work
- Computer Science
- 5 years
- 8 years
- Health insurance
- Dental insurance
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2d
Revenue Accounting System Business Analyst
CGC Group Inc. —Miami, FL
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Senior ALC Developer
The C.A.S.E. Engineering Group —New Carrollton, MD
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- Computer science
- Computer Science
- Research
- Health insurance
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Mainframe IMS
Pyramid Consulting, Inc —Chandler, AZ
- $65 - $73 an hour
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.NET Mainframe Developer
System One —Vienna, VA
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- 5 years
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11+ Years Senior JAVA Developer - Washington DC (In-person interview)
AHU Technologies Inc —Washington, DC
- $75 - $80 an hour
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Senior Specialist - Software Engineering (Mainframe Developer with Batch Processing Exp)
LTM —Berkeley Heights, NJ
- $81,215 - $129,800 a year
- In-person
- Senior level
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CA Endevor to IBM DBB / IDz / UCD Migration Developer
Source Code Technology —Remote
- $60 - $68 an hour
- Contract
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- Software troubleshooting
- Mid-level
- Communication skills
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6d
Microsoft Developer
Barrow Wise Consulting —Springfield, IL
- $70,000 - $150,000 a year
- Part-time
- Remote
- Azure
- 5 years
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IBM Mainframe Test Scheduler/Execution with IRS MBI and IRS Experience
MATRIX SYSTEMS & TECHNOLOGIES INC —Bowie, MD
- $60,000 - $80,000 a year
- Full-time
- Microsoft Excel
- Java
- Master's degree
- Health insurance
- Tuition reimbursement
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Cobol Mainframe Developer - Onsite work at Atlanta, GA
INFO ORIGIN INC —Atlanta, GA
- $50 an hour
- Contract
- Data analysis skills
- Mid-level
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Principal Test Engineer (SDET)
Navy Federal Credit Union —Vienna, VA
- $110,500 - $141,600 a year
- Online Application
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Infrastructure Engineer (ETL Administrator )
PNC Financial Services Group —Dallas, TX
- $55,000 - $152,375 a year
- Full-time
- Mid-level
- 3 years
- Bachelor's degree
- Wellness program
- Health savings account
Mainframe COBOL Developer - Onsite in Pittsburgh, PA
CGI Group, Inc. —Pittsburgh, PA
- $58,000 - $123,800 a year
- 6 years
- Office
- In-person
- Paid parental leave
- Paid holidays
9d
Lead Database Engineer
CGI Group, Inc. —Dallas, TX
- $57,100 - $154,300 a year
- 7 years
- SQL
- Senior level
- Paid parental leave
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7d
Lead Java Platform Engineer (Payments Publish) - Senior Vice President
Citi —Irving, TX
- $156,160 - $234,240 a year
- Full-time
- System design
- Office
- SQL
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12h
Mainframe Developer
Quantum Technologies —Jersey City, NJ
- $68 - $72 an hour
- Contract
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Infrastructure Engineer (ETL Administrator )
PNC Financial Services Group —Birmingham, AL
- $55,000 - $152,375 a year
- Full-time
- Mid-level
- 3 years
- Bachelor's degree
- Wellness program
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Senior Java Developer - Vice President
Citi —Irving, TX
- $125,760 - $188,640 a year
- Full-time
- 6 years
- Office
- Master's degree
- Paid holidays
- Disability insurance
7d
Field Service Technician - Fort Wayne IN Metro area
CVS Health —Indianapolis, IN
- $18.50 - $31.72 an hour
- Weekends as needed
- High school diploma or GED
- Driver's License
- Fair chance
- Health insurance
- Dental insurance
8d

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Senior COBOL/CICS/DB2 Developer

The C.A.S.E. Engineering Group
New Carrollton, MD

Quick Apply

Job Details

Full-time
$120,000 - $135,000 a year
2 days ago

Benefits

Health insurance
Dental insurance
401(k)
Opportunities for advancement

Qualifications

Performance tuning
Software engineering
Computer Science
Software Engineering
DB2
System performance optimization
SQL
CICS
Bachelor's degree
Improving database performance
Mainframe
COBOL
Mainframe development
System tuning
Data performance optimization
Associate's degree
PL/SQL
High availability
Information Technology

Full Job Description

Mainframe Software Developer (COBOL, JCL, CICS, SQL)

Location: Hybrid-New Carrollton, MD (Lanham) with remote flexibility
Position Type: Full-Time
Reports To: Technical Program Manager

About The C.A.S.E. Engineering Group

The C.A.S.E. Engineering Group is an Information Technology (IT) engineering firm that specializes in providing cybersecurity advisory services, modernizing IT architectures, developing and implementing IT strategic plans, and designing and engineering innovative systems, software, and applications. C.A.S.E. stands for Cybersecurity, Architecture, Strategy, and Engineering, which reflects both our core expertise and our belief that developing innovative solutions in unique environments requires a balanced approach. While C.A.S.E. tailors its solutions on a case-by-case basis to address the specific challenges organizations face, it also leverages industry best practices to ensure efficiency, security, and long-term success.

At C.A.S.E., we are always on the lookout for exceptional talent that can support our vision of delivering cutting-edge solutions, driving innovation, and solving complex challenges in mission-critical environments. We seek professionals who are not only technically proficient but also adaptable, analytical, and dedicated to excellence—ensuring that we continue to provide our clients with the best expertise available.

Position Overview

The Senior COBOL/CICS/DB2 Developer will be responsible for developing, maintaining, and enhancing applications on an IBM Mainframe platform in support of a federal tax processing and master file research environment. This role requires extensive experience in COBOL, CICS, and DB2 development, a strong command of legacy mainframe systems, and the ability to troubleshoot, optimize, and tune high-availability applications. The developer will collaborate with cross-functional teams to resolve production issues, implement system enhancements, and ensure that all changes meet federal standards before deployment.

This is a full-time, hybrid role requiring availability during normal business hours, with occasional night and weekend work as needed based on project demands. Personnel must have reasonable access to the government site in Lanham, MD and be able to travel there within two hours’ notice. The Senior COBOL/CICS/DB2 Developer reports to the Technical Program Manager and works closely with development, testing, and operations teams to ensure high-quality software development and system integration.

Key Responsibilities

Develop, test, debug, and maintain COBOL, CICS, and DB2 applications on an IBM Mainframe platform
Work extensively with Job Control Language (JCL), AEV JCL, VSAM, Panels, Copybooks, and Skeleton PROCS
Troubleshoot and resolve production problems in a timely manner to sustain system availability
Perform performance tuning, optimization, and root-cause analysis on mainframe-based applications
Follow Production Environment Control Process (PECP) guidelines and the ServiceNow ticket and Endevor transmittal processes
Use CFOL Command Codes for research and support analysis of IRS Individual and Business Master Files
Design, modify, and document coding changes for application enhancements and legislative mandates
Develop and optimize PL/SQL and support relational database products
Perform peer reviews and ensure adherence to coding best practices
Ensure software changes are defect-free before deployment to production
Produce Enterprise Life Cycle (ELC) documentation such as DSR, iBSR, ICD, and TRR
Utilize the IBM Engineering Lifecycle Management (ELM) Tool Suites, including DOORS Next, Jira, and IBM Engineering Test Management (ETM)
Support Agile development practices and collaborate with stakeholders to define and implement technical solutions

Qualifications

Education:

Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related field (or equivalent experience).

Experience:

At least 8 years of experience in COBOL, CICS, and DB2 development
Proven experience with legacy systems and applications in a mainframe environment
Experience in performance tuning, troubleshooting, and optimizing mainframe-based applications

Technical Expertise:

IBM Mainframe COBOL development within a high-availability environment
Customer Information Control System (CICS) and DB2
IBM Suite, File Manager, Job Control Language (JCL), AEV JCL, and IBM Debugger
VSAM, Panels, Copybooks, and Skeleton PROCS
PL/SQL development and optimization
Endevor and the Service Now ticket / Endevor transmittal processes
IBM Engineering Lifecycle Management (ELM) Tool Suites, e.g., IBM Requirements Management
DOORS Next, Jira, and IBM Engineering Test Management (ETM)
CFOL Command Codes for research

Additional Skills:

Strong problem-solving and debugging skills with attention to detail
Knowledge of the IRS Individual and Business Master File systems is highly desirable
Familiarity with Enterprise Life Cycle (ELC) process and documentation, and Agile methodologies
Knowledge of RHEL 8 containerization and Cloud Migration is a plus
Ability to collaborate in a team-oriented environment and communicate effectively with technical and non-technical stakeholders
Adaptability in a fast-paced, evolving work environment with shifting priorities

Clearance:

Must be able to obtain and maintain an IRS Minimum Background Investigation (MBI); U.S. work authorization required

Why Join Us?

Work with mission-critical systems that directly support federal tax processing operations
Apply deep mainframe expertise on high-impact, high-visibility systems
Be part of a growing company that values innovation, technical excellence, and problem-solving
Hybrid role offering flexibility and work-life balance
Opportunities for professional growth and advancement

Job Type: Full-time

Pay: $120,000.00 - $135,000.00 per year

Benefits:

401(k)
Dental insurance
Health insurance

Location:

New Carrollton, MD 20784 (Required)

Work Location: Hybrid remote in New Carrollton, MD 20784

Quick Apply

Refine Your Search

Mainframe Application Developer jobs

Senior COBOL/CICS/DB2 Developer

Revenue Accounting System Business Analyst

Senior ALC Developer

Mainframe IMS

.NET Mainframe Developer

11+ Years Senior JAVA Developer - Washington DC (In-person interview)

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CA Endevor to IBM DBB / IDz / UCD Migration Developer

Microsoft Developer

IBM Mainframe Test Scheduler/Execution with IRS MBI and IRS Experience

Cobol Mainframe Developer - Onsite work at Atlanta, GA

Principal Test Engineer (SDET)

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Mainframe COBOL Developer - Onsite in Pittsburgh, PA

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Lead Java Platform Engineer (Payments Publish) - Senior Vice President

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Senior Java Developer - Vice President

Field Service Technician - Fort Wayne IN Metro area

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