Lead Mainframe-to-GCP Modernization Architect

Themesoft Inc; Chicago (IL); Hybrid; USD 150,000 - 210,000; Full time

Job summary

The Migration Architect - Mainframe to GCP at Themesoft Inc leads large-scale modernization efforts, guiding strategy and execution to move legacy systems to Google Cloud. You will work closely with senior leadership to define roadmaps and ensure secure, compliant, scalable transitions across complex enterprise environments.

Hybrid role across multiple locations, requiring deep mainframe expertise, strong GCP knowledge, and a track record of delivering end-to-end modernization programs with

Qualifications

• 12+ years in enterprise application/platform architecture.
• 6+ years in mainframe modernization or legacy transformation.
• Proven experience leading enterprise-scale mainframe-to-cloud migration programs.
• GCP architecture and services; cloud migration strategies (re-host, re-platform, re-factor).
• Event-driven and hybrid architectures; security, IAM, compliance, governance.
• DevOps, CI/CD, and automation; experience driving automation initiatives.
• Ability to advise executives and manage senior stakeholders throughout programs.

Responsibilities

• Lead large-scale mainframe modernization and migration programs to GCP.
• Advise executives (VPs, steering committees) on cloud transformation roadmaps.
• Design migration strategies: re-host, re-platform, re-factor.
• Architect GCP Dual Run solutions for parallel testing and risk-free cutovers.
• Develop event-driven integrations using Pub/Sub, APIs, BigQuery, Cloud Storage, GKE.
• Oversee end-to-end GCP architecture: applications, data, networking, security, governance, DR.
• Drive DevOps, CI/CD, automation; support production cutovers and stabilization.

Skills

Mainframe modernization

GCP architecture

Cloud migration strategies

Event-driven architectures

DevOps & CI/CD

Automation

Security & governance

Stakeholder management

Tools

BigQuery

Pub/Sub

GKE

Cloud Storage

Job description

The Migration Architect - Mainframe to GCP at Themesoft Inc leads large-scale modernization efforts, guiding strategy and execution to move legacy systems to Google Cloud. You will work closely with senior leadership to define roadmaps and ensure secure, compliant, scalable transitions across complex enterprise environments.

Hybrid role across multiple locations, requiring deep mainframe expertise, strong GCP knowledge, and a track record of delivering end-to-end modernization programs with