← all jobs

Junior Mainframe Developer (COBOL)

Work from home Full-time role Hiring

Role Title: Junior COBOL Developer

Role Type: Contractor

Location: Remote

micro1 is engaging Junior COBOL Developers to contribute to a dynamic customer project focused on legacy system support and modernization. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters. This opportunity is ideal for COBOL professionals who are passionate about both technology and effective communication, and who are eager to make an impact on innovative AI-driven initiatives.

Scope of Work

  1. Analyze, interpret, and document COBOL code for legacy system applications.
  2. Provide high-quality, detailed written and verbal input based on project-specific prompts and tasks.
  3. Identify and explain program logic, data flows, and integration points within COBOL environments.
  4. Contribute to the creation and refinement of AI training data sets by sharing your domain knowledge.
  5. Review and clarify technical requirements and specifications to ensure accurate model understanding.
  6. Collaborate virtually with project managers and technical stakeholders to meet deliverables and milestones.
  7. Participate in feedback sessions to iteratively enhance project outcomes and model performance.

Preferred Qualifications

  1. Proficiency in COBOL programming and understanding of mainframe or midrange environments.
  2. Demonstrated ability to communicate complex technical concepts in clear written and verbal English.
  3. Experience with interpreting legacy system documentation and business logic.
  4. Familiarity with data processing, batch operations, or transaction management in COBOL.
  5. Keen attention to detail and a methodical approach to code analysis and documentation.
  6. Interest or background in collaborative, remote projects involving cross-functional teams.
  7. Curiosity about AI systems and willingness to work on innovative technology initiatives.

Originally posted on

More open positions

Founding AI Engineer

Work from home Full-time role

AI Finance Domain Expert

Work from home Full-time role

Deployment Strategy Manager (CR, Costa Rica , Virtual, Costa Rica, LATAM)

Work from home Full-time role

Staff Engineer, Manufacturing

Work from home Full-time role

Documentation Specialist / Medical Writer - FSP

Work from home Full-time role

Inside Sales Rep – Financial (Remote

Work from home Full-time role

Enterprise Account Executive

Work from home Full-time role

Seasoned Remote Overnight Lab Dispatcher & Customer Service Specialist – Hybrid Home‑Based Role with Competitive Compensation and Career Growth at careerpulse

Work from home Full-time role

Senior Remote Customer Success & Travel Advisory Specialist – Global Adventure Planning, Personalized Journey Creation, and Client Engagement Lead at brighthush

Work from home Full-time role

Project Manager

Work from home Full-time role

YO IT Consulting is hiring: UI/UX Designer - Remote in San Francisco

Work from home Full-time role

Remote Customer Service Representative – Exceptional Customer Experience, $24/Hour at nexawork

Work from home Full-time role

Registered Nurse Triage and Transitions Team PRN

Work from home Full-time role

Inbound Virtual Customer Service Agent

Work from home Full-time role

NP Licensed in NY or NJ - Telephonic After Hours - Full Time - Remote

Work from home Full-time role

Manager I, Documentation

Work from home Full-time role

VA Regional Deployment Executive (VISN Regional Executive)

Work from home Full-time role

[Remote] Customer Service Representative

Work from home Full-time role

Certified Occupational Therapy Assistant – Pediatric Home Health

Work from home Full-time role

Backend Developer - Remote

Work from home Full-time role

Online English Teacher (Contract) — U.S. Elementary Schools

Work from home Full-time role