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Senior Mainframe Developer Jobs in Indiana (NOW HIRING)

Sensiple Inc.

Senior Mainframe Engineer

Columbus, IN · On-site

Position: Senior Mainframe Engineer Work Location: Columbus, IN (Onsite) Duration: Long Term Contract Requirements: * 10+ years of experience in Mainframe technologies. * Understanding the ...

SOSi

Sr. Systems Engineer

Indianapolis, IN · On-site +1

$99K - $136K/yr

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission ... Strong IBM mainframe experience. * IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production ...

SOSi

Sr. Systems Engineer

Indianapolis, IN · On-site

$99K - $136K/yr

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission ... Strong IBM mainframe experience. * IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production ...

SOSi

Sr. Systems Engineer

Indianapolis, IN · On-site +1

$99K - $136K/yr

SOSi is seeking a Senior Systems Engineer to support operations and sustainment of a mission ... Strong IBM mainframe experience. * IBM z/OS, IDMS, Oracle, Cognos, Broadcom Endevor, Production ...

campus4tech

Senior Test Analyst

Indianapolis, IN · On-site +1

Work with developers to resolve problems and ensure quality standards are met. Data validation ... Validate data flow between mainframe systems and other interfaces. Collaboration: Work with Test ...

Regal Rexnord

Design Engineer III

Fort Wayne, IN · Hybrid

$75K - $101K/yr

Design Engineer III (Mechanical) reports to the Power Efficiency Solutions Senior Manager of ... end frames, mainframes, etc.) meeting market requirements and cost targets for New Product ...

Regal Rexnord

Design Engineer II

Fort Wayne, IN · Hybrid

$75K - $101K/yr

Design Engineer II (Mechanical) reports to the Power Efficiency Solutions Senior Manager of ... end frames, mainframes, etc.) meeting market requirements and cost targets for New Product ...

Regal Rexnord

Design Engineer III

Fort Wayne, IN · Hybrid

$75K - $101K/yr

Design Engineer III (Mechanical) reports to the Power Efficiency Solutions Senior Manager of ... end frames, mainframes, etc.) meeting market requirements and cost targets for New Product ...

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Senior Mainframe Developer information

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How much do senior mainframe developer jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for senior mainframe developer in Indiana is $54.86, according to ZipRecruiter salary data. Most workers in this role earn between $51.44 and $59.95 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a senior mainframe developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

What are some common challenges faced by senior mainframe developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What is a senior mainframe developer?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.
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Senior Mainframe Developer jobs near you
Infographic showing various Senior Mainframe Developer job openings in Indiana as of August 2026, with employment types broken down into 80% Full Time, 6% Part Time, and 14% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $114,108 per year, or $54.9 per hour.

Need Senior Mainframe Developer / Mainframe Modernization Consultant - Indianapolis, IN - 20+ Years

Radiantze

Indianapolis, IN • On-site

$46.75 - $60.25/hr

Other

This job post has expired today. Applications are no longer accepted.

Job description

Role: Senior Mainframe Developer / Mainframe Modernization Consultant
Location: Indianapolis, IN
Duration: Long Term
Visa: / USC
Experience: 20+ Years
Position Summary
We are seeking a highly experienced Senior Mainframe Developer to support, enhance, modernize, and document enterprise-critical mainframe applications. This individual will serve as a technical subject matter expert (SME) for legacy COBOL environments while partnering with business and technical teams to drive system modernization, data migration, process improvements, and knowledge transfer initiatives.
The ideal candidate will possess extensive experience with COBOL development, DB2, VSAM, JCL, Oracle databases, and large-scale conversion efforts within insurance, financial services, pension, or government environments. Experience documenting legacy applications for modernization efforts and mentoring development teams is highly desired.
Responsibilities
Mainframe Development & Support
  • Design, develop, test, and maintain enterprise COBOL applications.
  • Analyze and troubleshoot production issues within mission-critical mainframe environments.
  • Create and maintain JCL, batch processing jobs, interfaces, and reporting solutions.
  • Develop and support applications utilizing DB2, VSAM, Oracle PL/SQL, and Stored Procedures.
  • Perform impact analysis and implement system enhancements while minimizing operational risk.
Mainframe Modernization
  • Analyze and document legacy COBOL applications to support modernization initiatives.
  • Produce business rules, use cases, process flows, and data dictionaries.
  • Assist organizations in migrating legacy code and functionality to modern platforms.
  • Identify opportunities for automation, process efficiency, and technical debt reduction.
Data Conversion & Integration
  • Lead large-scale data conversion and migration projects.
  • Develop and validate data mapping specifications.
  • Support data extraction, transformation, and loading activities.
  • Ensure data quality, reconciliation, and post-conversion validation.
Technical Leadership
  • Serve as a COBOL and Mainframe Subject Matter Expert.
  • Mentor and train junior developers and technical teams.
  • Guide modernization efforts and best practices.
  • Collaborate with business stakeholders, architects, and project managers to align solutions with business objectives.
Project & Process Improvement
  • Participate in project planning, estimation, and delivery.
  • Drive continuous improvement initiatives that improve operational efficiency.
  • Document processes and knowledge artifacts for long-term maintainability.
  • Support testing, implementation, and post-production stabilization activities.
Required Qualifications
  • 10+ years of experience in Mainframe Development (preferred 20+ years).
  • Extensive experience with:
    • COBOL / Micro Focus COBOL
    • IBM Mainframe Environments
    • JCL
    • DB2
    • VSAM
    • Oracle PL/SQL
    • Oracle Stored Procedures
  • Strong experience supporting financial services, insurance, government, or pension systems.
  • Experience performing legacy system analysis and documentation.
  • Experience leading data conversion and modernization projects.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Excellent communication and stakeholder management abilities.
Preferred Qualifications
  • Experience leading technical teams and mentoring developers.
  • Experience with Agile/Scrum methodologies.
  • Certified Scrum Master (CSM).
  • Experience integrating legacy systems with modern technologies.
  • Experience supporting enterprise reporting and data analytics solutions.
  • Knowledge of Java migration projects and modernization frameworks.
Technical Environment
Languages
  • COBOL
  • Micro Focus COBOL
  • Oracle PL/SQL
  • SQL
Databases
  • DB2
  • Oracle
  • VSAM
Platforms
  • IBM Mainframe
  • MVS/VM
  • Windows
Tools
  • JCL
  • Microsoft Project
  • Visio
  • Excel
  • PowerPoint
  • Access
Ideal Candidate Profile
The successful candidate will be a senior-level mainframe professional with deep COBOL expertise, experience modernizing legacy applications, leading conversion initiatives, documenting complex systems, and mentoring technical teams. They will thrive in environments where business-critical systems require both operational support and strategic modernization.

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