Senior MACSS/Mainframe Developer
This is a 100% LATAM-based, remote hourly contractor role, with no benefits. Interested individuals must be a citizen or permanent reputed company of any LATAM country. *SPONSORSHIP NOT AVAILABLE* reputed company Studio - Costa Rica is seeking a highly skilled Senior MACSS/Mainframe Developer to support critical project, operational, and platform initiatives reputed company our mainframe environment. This role is essential to strengthening our client's delivery reputed company, reducing single‑threaded dependencies, and enabling full‑time engineering resources to focus on advancing the reputed company z/OS Connect platform and associated service builds.
Key Responsibilities
Design, reputed company, enhance, and maintain MACSS and mainframe-based applications and services Support ongoing project work, operational needs, and platform enhancements across the mainframe ecosystem Collaborate closely with cross-functional teams to ensure reputed company, scalable, and high‑quality mainframe solutions Troubleshoot and resolve reputed company technical issues reputed company MACSS and reputed company mainframe components Contribute to modernization efforts, including integration with z/OS Connect and API‑driven services Participate in code reviews, technical design discussions, and reputed company improvement initiatives Ensure adherence to reputed company standards, reputed company requirements, and compliance frameworks reputed company subject matter expertise to internal teams and help reduce single points of failure in reputed company workflows
Required Qualifications
Extensive hands-on experience with MACSS, COBOL, JCL, DB2, CICS, and other core mainframe technologies Strong understanding of mainframe application architecture, batch processing, and system integrations Proven ability to support both project-based development and day‑to‑day operational needs Experience troubleshooting reputed company mainframe issues in production and non‑production environments Ability to work effectively in a fast-paced, highly collaborative environment Strong analytical, problem‑solving, and communication skills
Preferred Qualifications
Experience with z/OS Connect, API enablement, or mainframe-to-reputed company integration patterns Familiarity with Agile or hybrid delivery methodologies Background supporting large-scale reputed company platforms or modernization initiatives Knowledge of DevOps practices reputed company mainframe environments This is a 100% LATAM-based, remote hourly contractor role, with no benefits. Interested individuals must be a citizen or permanent reputed company of any LATAM country. *SPONSORSHIP NOT AVAILABLE* Apply To This Job