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Mainframe Developer Jobs in Denver, CO (NOW HIRING)

Bank is seeking a z/OS Systems Programmer that has extensive experience in mainframe technologies with an emphasis on installation/upgrading, tuning, and troubleshooting of z/OS and third-party ...

Director (Mainframe and GGS)

Denver, CO · On-site

$260K/yr

Coaches and develops engineers to adapt to evolving tools, frameworks, and AI-driven workflows ... Manage development resources on the IBM Mainframe Settlement and Reporting AND GGS applications, by ...

Director (Mainframe and GGS)

Denver, CO · Hybrid

$260K/yr

Coaches and develops engineers to adapt to evolving tools, frameworks, and AI-driven workflows ... Manage development resources on the IBM Mainframe Settlement and Reporting AND GGS applications, by ...

Director (Mainframe and GGS)

Denver, CO · Hybrid

$260K/yr

Coaches and develops engineers to adapt to evolving tools, frameworks, and AI-driven workflows ... Manage development resources on the IBM Mainframe Settlement and Reporting AND GGS applications, by ...

Sr. SW Engineer

Denver, CO

$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 ...

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

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

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 ...

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 ...

Showing results 21-40

Mainframe Developer information

See Denver, CO salary details

$10

$54

$74

How much do mainframe developer jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for mainframe developer in Denver, CO is $54.92, according to ZipRecruiter salary data. Most workers in this role earn between $48.46 and $62.31 per hour, depending on experience, location, and employer.

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.

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.

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.

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 operations. The role offers stable employment, competitive salaries, and requires skills in languages like COBOL and tools such as JCL. Demand remains steady in industries like finance and government, making it a viable career choice for those with relevant expertise.

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.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, government, and insurance that rely on legacy systems. They typically work with COBOL, JCL, and mainframe environments, and demand remains steady due to the ongoing need for system maintenance and integration. However, the overall job market is gradually shifting toward modern technologies, so acquiring skills in related areas can enhance job prospects.

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 popular job titles related to Mainframe Developer jobs in Denver, CO? For Mainframe Developer jobs in Denver, CO, the most frequently searched job titles are:
What job categories do people searching Mainframe Developer jobs in Denver, CO look for? The top searched job categories for Mainframe Developer jobs in Denver, CO are:
Infographic showing various Mainframe Developer job openings in Denver, CO as of August 2026, with employment types broken down into 51% Full Time, and 49% Contract. Highlights an 89% In-person, and 11% Remote job distribution, with an average salary of $114,243 per year, or $54.9 per hour.

z/OS Systems Engineer

US Bank

Denver, CO • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 23 days ago


U.S. Bank rating

8.2

Company rating: 8.2 out of 10

Based on 360 frontline employees who took The Breakroom Quiz

51st of 170 rated banks


Job description

At U.S. Bank, we're on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions and enabling the communities we support to grow and succeed. We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive at every stage of your career. Try new things, learn new skills and discover what you excel at-all from Day One.

Job Description

U.S. Bank is seeking a z/OS Systems Programmer that has extensive experience in mainframe technologies with an emphasis on installation/upgrading, tuning, and troubleshooting of z/OS and third-party software. This individual should be self-motivated and driven to help contribute toward the success of our mainframe technology initiatives. This person will work in a team environment supporting multiple systems in a highly redundant and robust mainframe environment. Participate in project teams to implement new capabilities and technologies. Suggest new or alternative products and solutions to modernize and streamline our environment. Lead projects and efforts across multiple teams.

Responsibilities Include

  • Lead the installation, configuration, maintenance, and lifecycle management of IBM z/OS operating systems across multiple Sysplex environments and data centers.
  • Develop, standardize, and execute z/OS upgrade, migration, and maintenance methodologies using SMP/E for software installation and updates.
  • Troubleshoot and resolve complex z/OS system, performance, and infrastructure issues, providing root cause analysis and long-term solutions.
  • Administer and support critical mainframe subsystems including JES2, CICS, IMS, MQ, and Db2.
  • Collaborate with storage, security, networking, application development, and capacity planning teams to ensure optimal system performance and availability.
  • Configure and maintain IBM and third-party software products, including solutions from Broadcom (CA), BMC, and Compuware.
  • Participate in Disaster Recovery (DR) planning, testing, and recovery exercises to ensure business continuity and platform resiliency.
  • Manage and support mainframe hardware, coupling facilities, storage configurations, and GDPS environments.
  • Maintain comprehensive system documentation, configuration standards, operational procedures, and technical diagrams.
  • Provide 24x7 production support and on-call coverage as part of a rotating support model.

Basic Qualifications
- Bachelor's degree, or equivalent work experience
- At least 5 years of experience within a total information technology (IT) environment
- At least 10 years of experience with the design, development and support of technology infrastructure

Preferred Skills/Experience:

  • Extensive experience administering and supporting IBM z/OS in large-scale Parallel Sysplex environments.
  • Strong expertise in z/OS installation, configuration, maintenance, upgrades, and SMP/E software deployment.
  • Hands-on experience supporting critical mainframe subsystems including CICS, IMS, JES2, IBM MQ, and Db2 for z/OS.
  • Advanced knowledge of RACF security administration, access controls, and compliance best practices.
  • Proven ability to troubleshoot and resolve complex z/OS system, performance, and availability issues.
  • Experience with mainframe performance monitoring and capacity management tools, including RMF and MainView.
  • Strong understanding of Coupling Facilities, Mainframe Storage Management, and IBM Z hardware infrastructure.
  • Experience supporting and configuring enterprise mainframe software from Broadcom (CA), BMC, and Compuware.
  • Hands-on experience with Disaster Recovery (DR) planning, testing, and recovery operations in mission-critical environments.
  • Proficiency in REXX scripting for automation, system administration, and operational efficiency.

Location expectations
This role requires working from a U.S. Bank location three (3) or more days per week.

If there's anything we can do to accommodate a disability during any portion of the application or hiring process, please refer to ourdisability accommodations for applicants.

Benefits:

Our approach to benefits and total rewards considers our team members' whole selves and what may be needed to thrive in and outside work. That's why our benefits are designed to help you and your family boost your health, protect your financial security and give you peace of mind. Our benefits include the following:

  • Healthcare (medical, dental, vision)

  • Basic term and optional term life insurance

  • Short-term and long-term disability

  • Pregnancy disability and parental leave

  • 401(k) and employer-funded retirement plan

  • Paid vacation (from two to five weeks depending on salary grade and tenure)

  • Up to 11 paid holiday opportunities

  • Adoption assistance

  • Sick and Safe Leave accruals of one hour for every 30 worked, up to 80 hours per calendar year unless otherwise provided by law

Review our full benefits available by employment status here.

U.S. Bank is an equal opportunity employer. We consider all qualified applicants without regard to race, religion, color, sex, national origin, age, sexual orientation, gender identity, disability or veteran status, and other factors protected under applicable law.

E-Verify

U.S. Bank participates in the U.S. Department of Homeland Security E-Verify program in all facilities located in the United States and certain U.S. territories. The E-Verify program is an Internet-based employment eligibility verification system operated by the U.S. Citizenship and Immigration Services. Learn more about theE-Verify program.

The salary range reflects figures based on the primary location, which is listed first. The actual range for the role may differ based on the location of the role. In addition to salary, U.S. Bank offers a comprehensive benefits package, including incentive and recognition programs, equity stock purchase 401(k) contribution and pension (all benefits are subject to eligibility requirements). Pay Range: $105,400.00 - $124,000.00

U.S. Bank will consider qualified applicants with arrest or conviction records for employment. U.S. Bank conducts background checks consistent with applicable local laws, including the Los Angeles County Fair Chance Ordinance and the California Fair Chance Act as well as the San Francisco Fair Chance Ordinance. U.S. Bank is subject to, and conducts background checks consistent with the requirements of Section 19 of the Federal Deposit Insurance Act (FDIA). In addition, certain positions may also be subject to the requirements of FINRA, NMLS registration, Reg Z, Reg G, OFAC, the NFA, the FCPA, the Bank Secrecy Act, the SAFE Act, and/or federal guidelines applicable to an agreement, such as those related to ethics, safety, or operational procedures.

Applicants must be able to comply with U.S. Bank policies and procedures including the Code of Ethics and Business Conduct and related workplace conduct and safety policies.

Posting may be closed earlier due to high volume of applicants.


What U.S. Bank employees say

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About U.S. Bank

Sourced by ZipRecruiter

U.S. Bank is a reputable and established financial institution that plays a significant role in the banking sector. With a history spanning over 150 years, U.S. Bank has built a strong foundation of trust and reliability. As a comprehensive bank, they offer a wide array of financial products and services to cater to the diverse needs of their customers, including individuals, businesses, and communities. Customer satisfaction is of utmost importance to U.S. Bank. They prioritize delivering exceptional service and fostering long-term relationships with their clients. Through their extensive network of branches and advanced digital banking platforms, U.S. Bank ensures convenient access to their services, empowering customers to manage their finances efficiently and securely.

Industry

Banking and credit intermediation

Company size

10,000+ Employees

Headquarters location

Minneapolis, MN, US

Year founded

1863

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