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Senior Mainframe Developer Jobs in Baltimore, MD

Works with developers to define, build consensus around, and implement enterprise system and ... A minimum of ten (10) years of experience with architecting large scale Mainframe/Java enterprise ...

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Senior Mainframe Developer information

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$38

$57

$66

How much do senior mainframe developer jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for senior mainframe developer in Baltimore, MD is $57.29, according to ZipRecruiter salary data. Most workers in this role earn between $53.75 and $62.60 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a senior mainframe developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

What are some common challenges faced by senior mainframe developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What is a senior mainframe developer?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.
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Infographic showing various Senior Mainframe Developer job openings in Baltimore, MD as of June 2026, with employment types broken down into 90% Full Time, 9% Part Time, and 1% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $119,153 per year, or $57.3 per hour.

Tier 2 Desktop Support Technician with Security Clearance

AAC Inc.

Fort George G Meade, MD • On-site

$22.50 - $28.50/hr

Other

Re-posted 27 days ago


Job description

Provides Tier 2 desktop support to users for PC, server, mainframe applications, and hardware including but not limited to operating systems, email, standard desktop applications, printers, mobile devices and other standard end user managed tools, HW, and peripherals. Images new computers using a standard-image as well as securely wiping hard drives. Provisions and de-provisions equipment and accounts in support of during end user on- and off- boarding. Documents, tracks, resolves, and reports on incidents and requests using the designated ticketing system. Has senior technical skills and understanding of the technical environment. May interact with network services, software systems engineering, and/or applications development to restore service and/or identify and correct core problems. Simulates or recreates user problems to resolve operating difficulties. Recommends systems modifications to reduce user problems. Maintains currency and high level of technical skill in field of expertise. Escalates incident to the appropriate team when the incident cannot be resolved by Tier 2. Must be able to provide occasional surge and Battle Assembly Weekend support. Position is full-time on-site at a government facility in Fort Meade, MD. Required Skills · Requires a bachelor’s degree and a minimum of ten years of IT experience, of which at least six years must be specialized in Tier 2 support and relevant to the job description. · Additional education or 4 years of experience may be substituted for some education/experience requirements. · Required experience includes imaging of new systems, system deployment and refresh, and Tier 2 support of standard office computing equipment (PC’s, laptops, mobile devices, printers), PC operating systems, (e.g., Windows 10/11, iOS), Microsoft Office Suite, O365, Teams, Active Directory, standard business software applications, and other standard end user managed tools and peripherals. · ITSM ticketing system experience required (e.g., Remedy, ServiceNow). · Must have an active DOD Secret security clearance. · Must have an active Security+ certification. · Must have a positive and patient customer service attitude, and the ability to effectively communicate orally and in writing. · Must be able to work independently and within a team.