> Markdown version of [/jobs/ext/2060530-mainframe-cobol-engineer-banking](https://www.wearedevelopers.com/jobs/ext/2060530-mainframe-cobol-engineer-banking). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Mainframe COBOL Engineer (Banking)

- **Company:** Randstad
- **Location:** Chicago, IL, United States (Remote available)
- **Experience:** Expert
- **Salary:** $93,600.0 - $104,000.0
- **Contract:** Contract
- **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Architectural Patterns, Unit Testing, Bioinformatics, Customer Information Control System (CICS), COBOL (Programming Language), Code Review, Information Technology Consulting, Databases, Custom Software, IBM DB2, Software Debugging, Fault Tolerance, Job Control Language (JCL), IBM Mainframe, Integrated Development Environments, Mainframes, Online Transaction Processing, Performance Tuning, Scrum Methodology, Software Construction, Software Engineering, Software Systems, Systems Architecture, Virtual Storage Access Methods, Z/OS, Transaction Processing (Computing), Reliability of Systems, Information Technology, Data Management
- **Published:** August 14, 2026
- **Apply:** https://www.randstadusa.com/jobs/4/1343505/mainframe-cobol-engineer-banking_chicago/

## About the Role

Agile practices,Agile Delivery Methodologies,architectural patterns,Architecture Patterns,Cobol,code reviews,Custom Software,CICS,data management,fault-tolerant,DB2,IBM Mainframe,JCL,Mainframe,Mainframe Systems,system reliability,Scrum,debugging,transaction processing,VSAM,z/OS,decision-making,strong problem-solving skills,Collaboration,architecture,backlog refinement,banking,business objectives,continuous improvements,collaborative mindset,core banking,Client Communication,distributed engineering,execution management,Kanban,Financial Services,technical mentorship,resource consumption,Stakeholder Engagement,technical implementations,technical subject matter expert,workflows,operational workflows

## Description

job summary:
Join our technology consulting practice as a Senior Mainframe COBOL Engineer supporting high-impact software solutions within the Financial Services sector. In this role, you will design, enhance, and optimize scalable COBOL applications and core banking transaction components in a modern software engineering environment.

location: Telecommute
job type: Contract
salary: $45 - 50 per hour
work hours: 8am to 5pm
education: Bachelors

responsibilities:

 * Design, write, and optimize high-performing COBOL code across mainframe system components.
 * Implement robust mainframe architecture patterns to ensure reliable batch and online transaction processing.
 * Partner with technical leads, business analysts, and cross-functional teams to translate requirements into technical designs.
 * Troubleshoot complex system issues, perform root-cause analysis, and optimize core database/VSAM interactions.
 * Enforce rigorous software engineering standards through unit testing, code reviews, and technical documentation.

qualifications:
Bachelor's Degree in Computer Science.

5+ years of hands-on experience in COBOL programming and Mainframe system architecture (z/OS, JCL, CICS, DB2).

3+ years of direct experience within the Banking or Financial Services domain.

Strong background in software engineering best practices, data modeling, and performance tuning.

PREFERRED QUALIFICATIONS

Experience operating within Agile/Scrum development teams.

Strong verbal and written communication skills with experience presenting technical concepts to key stakeholders.

Familiarity with hybrid mainframe integration technologies and modern API connectors.

skills:
Agile practices,Agile Delivery Methodologies,architectural patterns,Architecture Patterns,Cobol,code reviews,Custom Software,CICS,data management,fault-tolerant,DB2,IBM Mainframe,JCL,Mainframe,Mainframe Systems,system reliability,Scrum,debugging,transaction processing,VSAM,z/OS,decision-making,strong problem-solving skills,Collaboration,architecture,backlog refinement,banking,business objectives,continuous improvements,collaborative mindset,core banking,Client Communication,distributed engineering,execution management,Kanban,Financial Services,technical mentorship,resource consumption,Stakeholder Engagement,technical implementations,technical subject matter expert,workflows,operational workflows

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact HRsupport@randstadusa.com.

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

,

 * Design, write, and optimize high-performing COBOL code across mainframe system components.
 * Implement robust mainframe architecture patterns to ensure reliable batch and online transaction processing.
 * Partner with technical leads, business analysts, and cross-functional teams to translate requirements into technical designs.
 * Troubleshoot complex system issues, perform root-cause analysis, and optimize core database/VSAM interactions.
 * Enforce rigorous software engineering standards through unit testing, code reviews, and technical documentation.


## Related Videos

- [Data Fabric in Action - How to enhance a Stock Trading App with ML and Data Virtualization](https://www.wearedevelopers.com/videos/253-data-fabric-in-action-how-to-enhance-a-stock-trading-app-with-ml-and-data-virtualization)
- [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases)
- [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob)
- [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases)
- [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option)
- [Branch your database like your code:  How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand)

## Related Articles

- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany)
- [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development)
- [Can coding be the next blue collar career?](https://www.wearedevelopers.com/magazine/44-can-coding-be-the-next-blue-collar-career)