Mainframe Developer (Senior)

Job title: Mainframe Developer (Senior) Location: Chicago, IL Employment type: Full-time Work Model: Hybrid — 3 days onsite per week Salary Range: 95,000–115,000 annually About the role Globant is seeking an experienced Mainframe Developer to support a client’s healthcare claims technology environment. This role will serve as a technical lead and subject matter expert for mainframe-based claims adjudication applications, contributing to production support, system enhancements, complex defect resolution, and modernization-related initiatives. The ideal candidate has strong hands-on mainframe development experience, deep knowledge of healthcare claims processing, and the ability to partner with business and technology stakeholders to deliver reliable, compliant, and scalable solutions. Responsibilities Serve as a technical lead and subject matter expert for mainframe-based healthcare claims adjudication systems. Analyze, design, develop, test, and implement complex fixes, enhancements, and maintenance updates for claims-processing applications. Develop and maintain applications using COBOL, DB2, VSAM, JCL, and CICS. Investigate and resolve critical production incidents, application defects, performance issues, batch-processing failures, and functional issues. Perform root cause analysis for recurring production issues and recommend sustainable corrective or preventive actions. Support mainframe system upgrades, application enhancements, releases, and integration activities. Partner with business analysts, product owners, and operational stakeholders to translate healthcare claims requirements and regulatory updates into detailed technical designs and development solutions. Participate in code reviews and enforce established client coding, security, documentation, and quality standards. Use mainframe debugging and analysis tools, such as Xpediter, File-AID, and Abend-AID, to diagnose and resolve complex issues. Collaborate with application development, QA, infrastructure, database, and production-support teams to ensure smooth integration and delivery. Create and maintain technical designs, process documentation, support procedures, runbooks, and knowledge-transfer materials. Mentor junior developers and provide technical guidance on mainframe development standards, claims-processing logic, debugging, and production support. Support compliance requirements by maintaining accurate documentation, traceability, and appropriate controls for application changes. Required qualifications 6–9 years of hands-on mainframe application development experience. Strong development experience with: COBOL. DB2. VSAM. JCL. CICS. Experience supporting, enhancing, and troubleshooting mainframe-based enterprise applications. Hands-on experience with mainframe debugging tools such as Xpediter, File-AID, Abend-AID, or equivalent tools. Strong experience investigating production defects, batch abends, performance issues, and application failures. Experience conducting root cause analysis and delivering permanent fixes for recurring issues. Knowledge of healthcare claims processing and claims adjudication workflows. Experience with healthcare EDI transactions, including 837 claims and 835 remittance advice files. Working knowledge of ICD-10 coding standards and their impact on claims processing. Ability to analyze business requirements and convert them into technical specifications, program designs, and implementation plans. Experience participating in code reviews, testing, release management, and change-control processes. Strong problem-solving, written communication, documentation, and stakeholder-management skills. Ability to work effectively in a hybrid team environment and be onsite in Chicago three days per week. Preferred qualifications Experience working with payer, provider, health insurance, Medicare, Medicaid, or other healthcare claims platforms. Experience with HIPAA-related claims-processing requirements and healthcare data controls. Familiarity with Agile delivery methodologies, Jira, ServiceNow, or similar work-management and incident-management tools. Experience with mainframe production-support models, including on-call support and incident triage. Prior experience mentoring developers or serving as a technical lead on mainframe development initiatives. Experience with testing tools or methodologies for mainframe applications, batch jobs, and EDI claims-processing interfaces. What you’ll bring Strong ownership of complex application issues from analysis through production resolution. A quality-focused approach to design, coding, testing, documentation, and production support. The ability to balance urgent production priorities with sustainable engineering solutions. Clear communication skills for working across business, healthcare operations, and technical delivery teams. A collaborative mindset and willingness to mentor team members while helping improve engineering and support practices. For additional information regarding benefits, please see the Globant Experience Guide . Accommodations : If you have a need that requires an accommodation, please let us know by contacting the recruiting team at [email protected] Applicant Privacy: Globant will collect and process your information as a part of this application should you choose to submit it. For additional information please see Globant’s Privacy Policy. Equal Employment Opportunity : Globant is proud to be an equal opportunity and affirmative action employer. We are committed to building a workforce that is representative of the users we serve, creating a culture of belonging, and providing an equal employment opportunity regardless of any basis protected by law. For Canadian job postings, Globant does not discriminate based on any Canadian Federal or Provincial anti-discrimination law, and offers the same opportunities to all applicants regardless of characteristics. Use of AI: Globant may use AI and machine learning technologies in our recruitment process. Globant is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status, or any other characteristic protected by applicable federal, state, or local law. Globant is also committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need assistance or an accommodation due to a disability, please let your recruiter know. Remote work: Remote work permissibility is subject to change depending on business necessity. For additional questions regarding work locations please discuss with your hiring partner directly. Job Segment: Mainframe, Claims, Compliance, Testing, Test Engineer, Technology, Insurance, Legal, Engineering