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Mainframe Developer Jobs in Colorado (NOW HIRING)

US Bank

Principal Network Engineer z/OS

Denver, CO

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

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

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How much do mainframe developer jobs pay per hour?

As of Sep 11, 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 September 2026, with employment types broken down into 43% Full Time, and 57% Contract. Highlights an 100% In-person job distribution, with an average salary of $116,746 per year, or $56.1 per hour.

Lead Software Engineer - IBM z/OS - Connex Advantage Clearing and Settlement

Denver, CO • On-site

Visa
Finance and Insurance • 10K+ employees
Learn more about Visaexternal

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 25 days ago

Visa rating

8.3

Company rating: 8.3 out of 10

Based on 21 frontline employees who took The Breakroom Quiz

Job description

About Us
Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid.
At Visa, you'll have the opportunity to create impact at scale - tackling meaningful challenges, growing your skills and seeing your contributions impact lives around the world.
Join Visa and do work that matters - to you, to your community, and to the world. Progress starts with you.
Visa will accept applications for this role until at least 12-31-2026
Job Description
As a Lead Software Engineer within the Visa - Value Added Services - Issuing Solutions team, you will oversee the DPS Core Clearing and Settlement systems, ensuring the integrity and high availability of all batch applications operating on the IBM z/OS390 platform. You will play a critical role in managing and optimizing the settlement of approximately $5 billion daily by processing about 240 million transactions each day.
This is an advanced professional individual contributor role responsible for solving problems that have a medium to large impact on the business.
Your responsibilities include:
  • Oversee 2nd and 3rd level incident and problem resolution, ensuring timely determination and resolution of issues in both Production and Development environments.
  • Collaborate closely with application software development teams to manage and support software maintenance releases.
  • Direct and support new client implementations on the IBM z/OS390 platform, ensuring seamless integration and deployment.
  • Initiate and manage proactive measures to ensure a stable and reliable production environment.
  • Provide expert technical guidance to Client Services, Network Operations, and Implementation teams.
  • Lead the testing and certification processes for new DPS software and client integrations.
  • Partner with network operations and technical support teams to identify, design, and implement application fixes and enhancements that improve efficiency and usability.
  • Acting as the primary escalation point for complex problem resolution.
  • Participate in and coordinate on-call rotations to support 24x7 mainframe operations.
  • Guide technical decision-making, mentor team members, and drive strategic initiatives to maintain and enhance the reliability and performance of Visa DPS batch processing infrastructure.
  • Design and implement automation solutions to streamline routine mainframe operations and reduce manual intervention.
  • Ensure compliance with industry security standards and internal controls for mainframe systems and data.
  • Monitor system performance metrics, analyze trends, and recommend infrastructure enhancements to optimize mainframe efficiency.
  • Coordinate disaster recovery planning and execution to guarantee business continuity for critical mainframe applications.
  • Document system architectures, processes, and procedures to support knowledge transfer and audit requirements.
  • Passion for staying current with emerging technologies in AI, cloud computing, and mainframe modernization. Ability to evaluate new tools and frameworks and recommend adoption as appropriate.

This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager.
Visa will accept applications for this role until at least June 22, 2026. If this is posting, then we are still accepting applications.
Qualifications
Basic Qualifications:
  • 10+ years of relevant work experience with a Bachelor's Degree or at least 7 years of work experience with an Advanced degree (e.g. Masters, MBA, JD, MD) or 4 years of work experience with a PhD, OR 13+ years of relevant work experience.

Preferred Qualifications:
  • 12 or more years of work experience with a Bachelor's Degree or 8-10 years of experience with an Advanced Degree (e.g. Masters, MBA, JD, MD) or 6+ years of work experience with a PhD.
  • Degree in computer science or equivalent practical experience in data processing.
  • 12-15 years of experience in support or development roles on IBM z/OS390, specifically with Connex Advantage clearing and settlement batch applications (required)
  • 12-15 years of support or development experience in COBOL/JCL (required)
  • 12-15 years of general knowledge in EFT settlement and transaction processing (required)
  • 12-15 years of support or development experience using FILE-AID (required)
  • 12-15 years of support or development experience with scheduling software such as ESP, Control-M, CA7 as well as Transmission Methods using FTP/SSL, FTP/SSH, NDM over SSL/TLS
  • Experience with configuration automation is preferred
  • Hands-on knowledge of Artificial Intelligence (AI) and Large Language Models (LLM), particularly in integrating AI-driven solutions with legacy mainframe environments. Familiarity with machine learning frameworks and their application to business process automation or data analytics is highly desirable.
  • REXX experience is a plus
  • ISPF Dialog Manager experience is a plus
  • Collaborative and team-oriented work style
  • Ability to work independently with minimal management oversight
  • Strong analytical skills; able to analyze and resolve complex and sometimes undefined problems
  • Demonstrated leadership abilities and robust mentoring skills
  • Capable of multitasking and managing time effectively while working independently
  • Excellent analytical and problem-solving capabilities
  • Strong verbal and written communication skills, including the ability to translate technical concepts for non-technical audiences

Information for US Applicants
For roles located in the US, the estimated salary range for this position is $163,500.00 to $ 261,500.00 USD per year, which may include potential sales incentive payments (if applicable). Salary may vary depending on job-related factors which may include knowledge, skills, experience, and location. In addition, this position may be eligible for bonus and equity.Visa has a comprehensive benefits package for which this position may be eligible that includes Medical, Dental, Vision, 401(k), FSA/HSA, Life Insurance, Paid Time Off, and Wellness Program.
Work Hours
Varies upon the needs of the department.
Travel Requirements
This position requires travel 5-10% of the time.
Mental/Physical Requirements
This position will be performed in an office setting. The position will require the incumbent to sit and stand at a desk, communicate in person and by telephone, frequently operate standard office equipment, such as telephones and computers.
Visa is an EEO Employer
Qualified applicants will receive consideration for employment without regard to race, color religion, sex, national origin, sexual orientation, gender identity, disability or protect veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with the EEOC guidelines and applicable local law.

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About Visa

Sourced by ZipRecruiter

Visa is a global leader in digital payments, facilitating over 215 billion transactions annually across more than 200 countries and territories. Our mission is to connect the world through an innovative, reliable, and secure payments network, empowering individuals, businesses, and economies to thrive. When you become a part of Visa, you join a purpose-driven culture that values growth, embraces diversity, and recognizes the significance of your contributions. We believe in creating inclusive economies that uplift everyone, everywhere. Your work at Visa will directly impact billions of people worldwide, enabling access to financial services and shaping the future of money movement.

Industry

Finance and insurance

Company size

10,000+ Employees

Headquarters location

San Francisco, CA, US

Year founded

1958

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