Senior MACSS/Mainframe Developer

ImagineX is a tech company that deploys AI-assisted teams to build and secure mission-critical enterprise solutions with our clients – spanning software, cybersecurity, data, and AI. Structured like a software company, not a traditional consultancy, we blend deep technical expertise with authentic values, achieving world-class satisfaction (NPS 82). Our dedicated teams specialize in software, data, and AI across the U.S. and LATAM, bridging the gap between boutique agility and enterprise scale.

Overview

We are seeking a highly skilled Senior MACSS/Mainframe Developer to support critical project, operational, and platform initiatives within our mainframe environment. This role is essential to strengthening our client's delivery capacity, reducing single threaded dependencies, and enabling full time engineering resources to focus on advancing the Giga z/OS Connect platform and associated service builds.

This is an FTE opportunity based in Columbus, OH with 5 days a week in office requirements.

Key Responsibilities

Design, develop, 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 stable, scalable, and high quality mainframe solutions

Troubleshoot and resolve complex technical issues within MACSS and related mainframe components

Contribute to modernization efforts, including integration with z/OS Connect and API driven services

Participate in code reviews, technical design discussions, and continuous improvement initiatives

Ensure adherence to enterprise standards, security requirements, and compliance frameworks

Provide subject matter expertise to internal teams and help reduce single points of failure in current 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 complex 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-cloud integration patterns

Familiarity with Agile or hybrid delivery methodologies

Background supporting large-scale enterprise platforms or modernization initiatives

Knowledge of DevOps practices within mainframe environments

SPONSORSHIP NOT AVAILABLE