Mainframe to Python Migration Developer

Overview

Remote
$50 - $70
Accepts corp to corp applications
Contract - Independent
Contract - 6 Month(s)

Skills

Python
Mainframe
Migration

Job Details

Job Title: Mainframe to Python Migration Developer
Location: Remote
Job Type: Contract
Experience: 5+ years

Job Summary:

We are looking for a skilled developer with experience in migrating legacy mainframe applications (COBOL, JCL, DB2, VSAM) to modern Python-based platforms. The ideal candidate will be proficient in both mainframe systems and Python development and have a deep understanding of system integration, refactoring, and modernization techniques.

Key Responsibilities:

  • Analyze and understand existing mainframe-based applications (COBOL, JCL, DB2, VSAM).

  • Design and develop equivalent functionality in Python, ensuring business logic is preserved.

  • Translate batch processes and job control logic to modern ETL or job orchestration tools.

  • Modernize database structures and interactions (DB2 to PostgreSQL, Oracle, or NoSQL if applicable).

  • Collaborate with QA, DevOps, and infrastructure teams to ensure smooth deployment and performance.

  • Create detailed documentation for the migrated components.

  • Perform unit, integration, and performance testing for the new solutions.

  • Support production deployments and troubleshooting.

Required Skills:

  • Strong hands-on experience with COBOL, JCL, DB2, VSAM.

  • Proficiency in Python programming and object-oriented design.

  • Experience with Python frameworks (Django, Flask, FastAPI, etc.) is a plus.

  • Good understanding of mainframe to open system modernization strategies.

  • Familiarity with REST APIs, JSON, and message queues (Kafka/RabbitMQ).

  • Experience with Git, CI/CD pipelines, and Agile methodologies.

  • Strong analytical and problem-solving skills.

Preferred Qualifications:

  • Experience in tools like Micro Focus, Raincode, or other code conversion utilities.

  • Knowledge of cloud environments (AWS, Azure, Google Cloud Platform) and cloud-native services.

  • Experience in rewriting or reengineering financial or insurance applications.

Education:

  • Bachelor s or Master s degree in Computer Science, Engineering, or related field.

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