Mainframe Modernization Architect

Ethereum Technologies LLC; Jersey City (NJ); On-site; USD 120,000 - 170,000; Full time

Job summary

Ethereum Technologies LLC seeks a seasoned modernization architect to lead the rehost and replatform efforts for legacy mainframe workloads. You will define strategies, design target architectures, and create migration roadmaps while ensuring security, availability, and compliance across environments.

The role requires hands-on experience with COBOL, CICS, JCL, VSAM, and related technologies, and you will collaborate with cloud teams to enable GCP-based modernization and seamless data migration

Qualifications

• Proven experience in modernization and migration strategies for mainframe workloads.

Responsibilities

• Conduct discovery and assessment of existing mainframe workloads (COBOL, JCL, DB2, VSAM, IMS, CICS).
• Define modernization strategies: Rehost, Replatform, Refactor, Retire, Replace.
• Develop migration roadmaps, risk mitigation, and rollback plans.
• Design target-state architecture for rehosted applications on cloud or distributed platforms.
• Ensure compliance with security, performance, high availability, and disaster recovery requirements.
• Create detailed blueprints for migration patterns and integration with modern systems.
• Design ETL processes for migrating mainframe data (Datacom) to SQL Server.
• Act as SME for modernization initiatives and provide technical leadership to engineering teams.
• Communicate architecture and strategy to stakeholders and executives.
• Participate in code migration and data transformation efforts as part of rehosting.
• Collaborate with architects and cloud teams to support GCP-based modernization.
• Support batch job execution, console monitoring, and production control.
• Provide critical inputs and guidance during migration.

Skills

Architectural design

Stakeholder communication

Migration planning

Tools

COBOL

CICS

JCL

VSAM

Easytrieve

IDEALDatacom

RPG

ASM

MQ

Job description

Ethereum Technologies LLC seeks a seasoned modernization architect to lead the rehost and replatform efforts for legacy mainframe workloads. You will define strategies, design target architectures, and create migration roadmaps while ensuring security, availability, and compliance across environments.

The role requires hands-on experience with COBOL, CICS, JCL, VSAM, and related technologies, and you will collaborate with cloud teams to enable GCP-based modernization and seamless data migration