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Mainframes Developer Jobs in Missouri (NOW HIRING)

Deloitte

Automation Engineer

Saint Louis, MO · Hybrid

Collaborate closely with Java developers, Mainframe engineers, product managers, and project leaders to align automation strategy with business and delivery priorities. * Document automation ...

Deloitte

Automation Engineer

Kansas City, MO · Hybrid

Collaborate closely with Java developers, Mainframe engineers, product managers, and project leaders to align automation strategy with business and delivery priorities. * Document automation ...

Deloitte

Senior Automation Engineer

Kansas City, MO · Hybrid

$101K - $133K/yr

Collaborate closely with Java developers, Mainframe engineers, product managers, and project leaders to align automation strategy with business and delivery priorities. * Document automation ...

Deloitte

Senior Automation Engineer

Saint Louis, MO · Hybrid

$101K - $132K/yr

Collaborate closely with Java developers, Mainframe engineers, product managers, and project leaders to align automation strategy with business and delivery priorities. * Document automation ...

Futran Tech Solutions Pvt. Ltd.

SRE

Saint Louis, MO · On-site

$55.50 - $73.50/hr

Role : SRE (Mainframe + Java + Oracle + Account Management Services) Location : St Louis, MO ( 3 days onsite/Week ) Duration: 12 Months Key Responsibilities: Site Reliability Engineering * Ensure ...

Diverse Lynx

Mainframe Prod Support

Saint Louis, MO · On-site

$47.75 - $61.25/hr

They are seeking a Mainframe Prod Support professional with extensive experience in IT application support and a strong background in leadership roles. Responsibilities : • 10+ years of progressive ...

E-Solutions

Sr. Hogan Developer

Kansas City, MO · On-site

$53 - $70.25/hr

DIRECT/PERM HIRE Hogan Developer Work closely with business partners and analysts to evaluate ... Years of experience in IBM mainframe development and testing tools (i.e. TSO/SPF, Compuware/Macro4 ...

Dynamic Yield

Lead, Software Engineer (QE)

O Fallon, MO · On-site

$140K - $231K/yr

... with software developer to work closely with developers to build test automation, test ... using the mainframe as its data repository, and creating Cobol Stored Procedures preferred ...

MasterCard

Lead, Software Engineer (QE)

O Fallon, MO · On-site

... with software developer to work closely with developers to build test automation, test ... using the mainframe as its data repository, and creating Cobol Stored Procedures preferred ...

Slalom

Modernization Architect

Kansas City, MO · On-site

... engineers to ensure secure and efficient modernization patterns. Qualifications : Required : • Hands-on experience developing or operating on IBM mainframes (z/OS). • Proficiency in one or more ...

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Mainframes Developer information

What does a mainframe developer do?

A mainframe developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work in environments that require high reliability and security, and may also handle system updates, performance tuning, and integration with other systems.

What is mainframe developer salary?

The salary for a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Senior roles or those with specialized skills in COBOL, JCL, or mainframe environments may earn higher compensation. Many positions also offer benefits such as health insurance and retirement plans.

Can mainframe be replaced by AI?

Mainframes are large-scale computing systems used for critical enterprise applications, and while AI can automate certain tasks and improve efficiency, it does not replace the core functions of mainframes. Mainframe developers often work with legacy systems, COBOL programming, and security protocols, which require specialized skills that are not fully replaced by AI technologies.

Is mainframe still in demand?

Mainframes remain in demand for large enterprises such as banks, insurance companies, and government agencies that rely on their reliability, security, and processing power. Mainframe developers with skills in COBOL, JCL, and mainframe environments are sought after to maintain and upgrade legacy systems, though the overall demand has decreased as organizations adopt cloud and distributed computing. Certification and experience with mainframe tools can enhance job prospects in this specialized field.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What are popular job titles related to Mainframes Developer jobs in Missouri? For Mainframes Developer jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Missouri look for? The top searched job categories for Mainframes Developer jobs in Missouri are:
Mainframes Developer jobs near you

Sr. Java with Cobal/Mainframe experience(St. Louis City in Missouri) Hybrid and Day 1 Onsite

TestingXperts Inc. DBA Damcosoft

Saint Louis, MO • On-site

$47.75 - $61.25/hr

Contractor

Posted 26 days ago

Job description

Position Title

Sr. Java Engineer with Cobol/Mainframe

Domain EXP

(Banking Domain)

Location

St. Louis, MO (3 days hybrid at Client office)

Duration

6 Months

Must Have   

Java with COBOL and Mainframe requirement.

Job Description

The File Transfer Services team is looking for a Lead Software Engineer to drive our customer connectivity strategy forward by consistently innovating and problem-solving. The ideal candidate is passionate about the customer experience, highly motivated, intellectually curious, analytical, and possesses an entrepreneurial mindset.

In this key position, you will:

  • Design and develop high-performing Java and running on Linux. Ability to work on COBOL and mainframe (z/OS)  technologies is a plus.
  • Ensure scalability, security, and reliability of applications on Linux-based and mainframe-based infrastructures.
  • Translate complex technical solutions into business impacts for non-technical audiences.
  • Lead mainframe modernization efforts, bridging legacy COBOL, JCL, DB2 systems with Linux and Java applications.
  • Guide development teams in Agile best practices, ensuring consistent delivery and continuous improvement.
  • Provide technical leadership in software development, system architecture, and best coding practices.
  • Conduct design reviews, code reviews, and uphold coding standards.
  • Mentor and coach engineering teams, fostering a culture of technical excellence.
  • Collaborate with stakeholders to understand business requirements and translate them into technical solutions.
  • Present technical strategies, incident reports, and status updates to executive leadership and senior stakeholders.
  • Work closely with DevOps to automate deployments, and with BizOps to troubleshoot and resolve application, performance, and reliability issues.
  • Function as Scrum Master, facilitating daily stand-ups, sprint planning, retrospectives, and backlog grooming.
  • Stay up to date with emerging technologies.

The ideal candidate for this position should possess:

  • 8+ years of software development experience in Java/Linux with strong shell scripting and Linux command line skills. Experience working on Mainframe technologies is  a plus.
  • 3+ years of experience with file transfer applications like Connect Direct, and file transfer protocols like SFTP, FTPS, etc..
  • 3+ years of experience writing, optimizing, and automating tasks using Linux shell scripting.
  • Hands-on experience with IBM mainframe technologies, including COBOL, JCL, DB2, VSAM, CICS, and z/OS.
  • Expert in SQL queries and relational databases (DB2, Oracle, PostgreSQL)
  • Familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT) and vulnerability management.
  • Awareness of security standards and RFC’s such as X.509 Certificates, SSH Keys, PGP encryption.
  • Has skills to orchestrate release workflows and pipelines and apply standardized pipelines via APIs to achieve CI and CD objectives using industry standard tools (e.g., Jenkins, XL Release, others).
  • Understands how to build robust tests to minimize defect leakage by performing regression, performance, deployment verification, and release testing.
  • Experience working as technical lead and/or Scrum Master.
  • Good knowledge of Scaled Agile Framework (SAFe).