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Mainframe Developer Jobs in Colorado (NOW HIRING)

Jobtailor

Senior Software Engineer - Mainframe

Denver, CO · On-site

$85 - $125/hr

Leverage and build knowledge of software developer tools to create, debug, and maintain code for components. * Prepare technical documents, develop code, review code, build environment, review test ...

PNC Bank

Software Engineering Manager

Denver, CO · On-site

Core Technologies Programming/Runtime: Java, SQL, Tomcat, Websphere Databases ... Oracle, SQL, Neo4J, Mongo (distributed) or DB2, VSAM (mainframe) Streaming/Event Platforms: Kafka ...

US Bank

Principal Network Engineer z/OS

Denver, CO · On-site

Monitor, analyze, and resolve complex mainframe networking issues involving multiple protocols, connectivity layers, and distributed platforms. * Participate in the design and management of IP ...

krg technology inc

Test Engineer

Denver, CO · On-site

Company Description Sevagan M sevagan at krgtech com ph-661-367-8000 Extn-513 Manual Testing of Web Service using REST / SOAP Telecom domain with TIBCO, SQL, Mainframe JavaScript / Java / Python - to ...

Stem Xpert

LAN Engineer

Golden, CO · On-site

SAN engineer Requirement: Golden, CO Duration: 12 months Face to Face Interview Required. Local ... mainframe, circuit vendors, desktop and firewall support. The candidate will develop LAN cabling ...

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Mainframe Developer information

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$10

$56

$76

How much do mainframe developer jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for mainframe developer in Colorado is $56.13, according to ZipRecruiter salary data. Most workers in this role earn between $49.52 and $63.70 per hour, depending on experience, location, and employer.

What is a mainframe developer?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

What are the key skills and qualifications needed to thrive as a mainframe developer?

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.

What are some common challenges mainframe developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

Is a mainframe developer a good career?

A mainframe developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL, but it may require ongoing learning of evolving mainframe tools and certifications. Overall, it can be a good career for those interested in enterprise computing and system stability.

Is a mainframe developer hard to learn?

Mainframe developers typically need to learn specialized programming languages like COBOL and understand mainframe environments, which can have a steep learning curve for beginners. However, with prior programming experience and training, acquiring the necessary skills is achievable, and many employers offer on-the-job training or certification programs.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, insurance, and government, where legacy systems remain critical. They typically work with COBOL, JCL, and mainframe environments, and demand depends on the organization's reliance on mainframe technology and ongoing maintenance needs.

What are popular job titles related to Mainframe Developer jobs in Colorado?

For Mainframe Developer jobs in Colorado, the most frequently searched job titles are:

What job categories do people searching Mainframe Developer jobs in Colorado look for?

The top searched job categories for Mainframe Developer jobs in Colorado are:

What cities in Colorado are hiring for Mainframe Developer jobs?

Cities in Colorado with the most Mainframe Developer job openings:

What are popular job titles related to Mainframe Developer jobs in CO?

For Mainframe Developer jobs in CO, the most frequently searched job titles are:

Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Colorado as of August 2026, with employment types broken down into 91% Full Time, 2% Temporary, and 7% Contract. Highlights an 78% In-person, 5% Hybrid, and 17% Remote job distribution, with an average salary of $116,746 per year, or $56.1 per hour.

Senior Software Engineer - Mainframe

Jobtailor

Denver, CO • On-site

$85 - $125/hr

Other

Posted 5 days ago

Job description

  • Collaborate with stakeholders to interpret requirements for project components and incorporate feedback into future designs or solution fixes.
  • Translate business requirements by verifying assumptions and escalating potential design issues to appropriate stakeholders.
  • Contribute to project estimation and upscale issues that may cause delays.
  • Develop, implement, and maintain code for products, services, or components, applying coding patterns, guidelines, and best practices.
  • Apply debugging tools to verify assumptions and proactively flag issues before they occur.
  • Participate in code reviews to ensure coding standards are followed and address routine pull requests.
  • Manage end-to-end lifecycle of application enhancements by working with architects, systems analysts, project managers, QA and other developers to successfully implement projects.
  • Leverage and build knowledge of software developer tools to create, debug, and maintain code for components.
  • Prepare technical documents, develop code, review code, build environment, review test results, and prepare plan for implementation.
  • Identify opportunities for future enhancements and refinements to standards, best practices and development methodologies.
Requirements
  • Master's degree in Math, Science, Engineering, or Computer Science, Information Systems or related field
  • OR Bachelor's degree in Math, Science, Engineering, or Computer Science, Information Systems or related field AND minimum two (2) years of experience in a directly related field
  • OR Minimum five (5) years of directly related experience.
  • Development experience in COBOL, JCL, ISPF required
  • Development experience on MVS/OS 390 batch application required
  • Development experience using ESP, CA7 or another scheduling software
  • Development experience using FILE-AID
  • Development experience with Connex/Advantage settlement application or equivalent
  • Development experience with a Settlement/Reporting application in the Financial sector
  • Ability to solve complex software development/design issues
  • Ability to write clean, coherent code following established coding guidelines
  • Strong analytical and problem-solving skills
  • Good knowledge of EFT settlement and transaction processing
  • Hands-on knowledge of Artificial Intelligence (AI) and Large Language Models (LLM) is highly desirable.
Core Competencies

Demonstrates expertise in COBOL, JCL, and MVS/OS 390 batch application development, with a strong focus on coding best practices and debugging. Proficient in managing application enhancements and collaborating with cross-functional teams in the financial sector.

Highest-signal resume keywords
  • COBOL Development
  • MVS/OS 390 Batch Application Development
  • EFT Settlement Knowledge
  • Analytical Problem-Solving
  • Artificial Intelligence (AI) Knowledge
Hard Skills
  • COBOL
  • JCL
  • ISPF
  • ESP
  • CA7
  • FILE-AID
  • Connex/Advantage
  • Settlement Application Development
  • Transaction Processing
  • Coding Guidelines
Soft Skills
  • Analytical Skills
  • Problem-Solving Skills
Industry Keywords
  • Financial Sector
  • EFT Settlement
  • Transaction Processing
  • Software Development
  • Development Methodologies
Tools & Technologies
  • Scheduling Software
  • Debugging Tools
  • Software Developer Tools
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