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Mainframe Developer Jobs in Colorado (NOW HIRING)

Accenture

Mainframe Specialist

Denver, CO

$70K - $196K/yr

About the Role Are you a seasoned Mainframe Specialist with deep, hands-on command of COBOL, JCL ... Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ...

Huntington

Mainframe Systems Engineer III

Denver, CO · On-site

$178K - $211K/yr

The Mainframe Systems Engineer III candidate must have experience in one or more of the following disciplines: z/OS installation and customization, storage management, hardware configuration ...

Visa Inc.

Sr. SW Engineer - Mainframe

Denver, CO · On-site

$126K - $166K/yr

... of mainframe software applications. The role is responsible for contributing to the overall ... Leverage and build knowledge of software developer tools to create, debug, and maintain code for ...

Visa

Sr. SW Engineer - Mainframe

Denver, CO · On-site

$126K - $166K/yr

... of mainframe software applications. The role is responsible for contributing to the overall ... Leverage and build knowledge of software developer tools to create, debug, and maintain code for ...

Visa

Sr. SW Engineer - Mainframe

Denver, CO · On-site

$126K - $166K/yr

... of mainframe software applications. The role is responsible for contributing to the overall ... Leverage and build knowledge of software developer tools to create, debug, and maintain code for ...

US Bank

Software Engineer- Mainframe

Englewood, CO · On-site

The candidate will be adept with the agile software development lifecycle and DevOps principles ... Experience with COBOL development, debugging, and maintenance across complex mainframe applications

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All JobsMainframe Developer JobsMainframe Developer Jobs in Colorado

Mainframe Developer information

See Colorado salary details

$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.

Mainframe Software Engineer

AllSTEM Connections

Boulder, CO • On-site

$108K/yr

Temporary

Medical, Dental, Vision, Retirement

Re-posted 7 days ago

Job description

We are seeking a meticulous and process-oriented Senior Software Engineer to join a highly skilled team dedicated to developing and supporting enterprise-level output management products on the mainframe platform.
This is a unique opportunity for an engineer who balances a "deep dive" technical mindset with the leadership capacity to guide complex software solutions. You will be responsible for the health, enhancement, and integration of mission-critical mainframe services, ensuring high efficiency and customer satisfaction through disciplined engineering practices.
Core Responsibilities
Systems Development & Optimization
• Full-Lifecycle Engineering: Scope, design, and develop complex components for software products within the z/OS ecosystem.
• Modernization: Ensure design and code development incorporates the latest technologies while maximizing mainframe resources.
• Problem Resolution: Act as a tier-three troubleshooter, digging beneath symptoms to uncover root causes and implementing guided fixes for intricate system issues.
Technical Leadership & Strategy
• Project Planning: Lead professional teams and multi-functional projects, ensuring deliverables are completed on or ahead of schedule without sacrificing quality.
• Advisory: Serve as a subject matter expert, advising other professionals on complex software issues and contributing to the development of broader organizational goals.
• Process Excellence: Define and implement software alternatives that improve team efficiency, creating or enhancing tools to streamline workflows.
Quality & Documentation
• Precision Reviews: Lead rigorous code and design reviews, applying a detail-driven approach to ensure polished, complete work.
• Knowledge Management: Maintain exhaustive documentation for systems, technical decisions, and alternative solutions to foster team-wide knowledge sharing.
Technical Requirements
• Education: BS Degree in Computer Science, Engineering, or a related technical discipline.
• Mainframe Expertise: Proven experience with IBM 360/370 architectures and MVS/SP.
• Language Proficiency: 1+ years of professional experience in Assembler, PL/1 (or PLX), C, and JCL.
• Engineering Background: 2+ years of formal Software Engineering experience with a focus on system/product design and integration.
The Ideal Profile
• Process-Oriented: You value accuracy over speed and are committed to maintaining clear, repeatable workflows.
• Continuous Learner: You are eager to further your expertise in low-level mainframe technologies through hands-on work and mentorship.
• Accountable: You understand that your decisions have a direct impact on project objectives and customer satisfaction, and you take ownership of those outcomes. Equal Opportunity Employer / Disabled / Protected Veterans
The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf
The pay transparency policy is available here:
https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf
For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.
We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.
AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf
We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.
Additional Skills
(none specified)
AllSTEM Representative Contact Info
Account Executive:
Perry
Branch Phone:
(909) 244-1777
Location:
Houston, TX

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