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Mainframe Developer (Remote)

S2Tech
Chesterfield, MO Remote Full Time
POSTED ON 6/6/2026
AVAILABLE BEFORE 8/6/2026

Mainframe Developer

Location: Remote

About Us:

Known for “Delighting the Client” through performance, innovation, and an employee-centric culture, S2Tech is a fast-growing IT consulting company serving clients in over a quarter of the United States. We are widely recognized as a leading provider of both technical and business services in support of Health and Human Services-related projects. Feel free to learn more at www.s2tech.com.

Why S2Tech?:

  • Stable privately-owned company with a strong reputation for building long-term client relationships through the delivery of consistent value-based service
  • 25 years providing IT and Business services to private customers and government programs throughout the United States
  • Expansive client portfolio and active projects – employees benefit from innovative project exposure and in-house skill development training/courses  
  • Corporate culture that emphasizes the importance of family and promotes a healthy work-life balance
  • Offer competitive pay and a range of benefits, including:
    • Medical / Dental / Vision Insurance – insurance premium assistance provided
    • Additional Insurance (Life, Disability, etc.)
    • Paid Time Off
    • 401(k) Retirement Savings Plan & Health Savings Account
    • Various training courses to promote continuous learning
    • Corporate Wellness Program
  • Be part of a company that gives back through its non-profit organization, Fortune Fund, which was launched in 2001. The goal of the Fortune Fund is to close the rural/urban divide by ensuring children in rural communities in India and the United States understand the importance of education & are aware of professional career opportunities, allowing them to link their professional & educational goals

Job Overview:

We are seeking an experienced COBOL Mainframe Developer to join our dynamic team. The ideal candidate will have a proven track record of success in designing, developing, and maintaining COBOL-based applications on mainframe systems.

Responsibilities:

  • COBOL Development: Design, code, test, and maintain COBOL programs for mainframe applications
  • Mainframe Systems: Work with mainframe systems and associated technologies to ensure optimal performance and reliability
  • Analysis and Troubleshooting: Analyze business requirements and system specifications to develop effective and efficient COBOL solutions. Identify and troubleshoot issues, providing timely resolutions
  • Collaboration: Collaborate with cross-functional teams, including business analysts, systems analysts, and other developers, to ensure seamless integration of COBOL applications within the broader IT ecosystem
  • Documentation: Create and maintain comprehensive documentation for all COBOL programs, ensuring clarity and ease of understanding for other team members
  • Testing: Conduct thorough unit testing of developed code to ensure its functionality, reliability, and compliance with established standards
  • Performance Optimization: Identify opportunities for performance optimization and implement necessary improvements to enhance the overall efficiency of COBOL applications

Qualifications:

  • Bachelor's degree in Computer Science, Information Technology, or a related field
  • Over 5 years of hands-on experience in COBOL development on mainframe systems; a strong preference for prior Medicaid experience
  • Strong knowledge of mainframe technologies and associated tools
  • Experience in working on large-scale projects with complex business logic
  • Excellent analytical and problem-solving skills
  • Strong communication and interpersonal skills
  • Ability to work independently and as part of a collaborative team
  • Detail-oriented with a commitment to producing high-quality code

S2Tech is committed to hiring and retaining a diverse workforce. We are an equal opportunity employer making decisions without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected class.

Salary.com Estimation for Mainframe Developer (Remote) in Chesterfield, MO
$87,757 to $111,284
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