Enterprise Modernization Lead

Rensora AI; United Kingdom; Hybrid; GBP 140,000 - 180,000; Full time

Job summary

Rensora AI is seeking an Enterprise Modernization Lead to own end-to-end modernization programs for major organizations. You will partner with C-suite and enterprise architects to assess legacy portfolios, design migration strategies, and orchestrate transformations from mainframes and on-premises systems to cloud-native architectures.

This senior leadership role requires defining roadmaps, managing cross-functional teams, and ensuring migrations are delivered safely, on schedule, with

Qualifications

• 7+ years of experience in enterprise modernization, digital transformation, or IT consulting with lead role
• Deep hands-on experience with legacy technologies and multi-year transformation programs
• Strong knowledge of cloud platforms (AWS/Azure/GCP) and cloud-native patterns
• Experience with change management and organizational transformation in large enterprises
• Excellent stakeholder management and executive sponsorship alignment

Responsibilities

• Lead end-to-end modernization engagements from assessment to migration and optimization
• Audit legacy systems across mainframe, midrange, and monolithic estates
• Design migration strategies with clear rationale, risk analysis and business cases
• Build modernization roadmaps and business cases for C-suite and boards
• Manage cross-functional delivery teams including engineers, architects, and client leads
• Promote adoption of ModernZ AI platform for code analysis and migration planning
• Establish governance for large migrations including change management and rollback planning
• Mentor junior consultants and contribute to modernization methodology

Skills

Enterprise modernization

Cloud platforms

Stakeholder mgmt

Program management

Leadership

Tools

TOGAF

Zachman

Job description

As an Enterprise Modernization Lead at Rensora, you will own and drive end-to-end modernization engagements for some of the world's largest organizations. You will work with C-suite stakeholders and enterprise architecture teams to assess legacy portfolios, design migration strategies, and orchestrate the transformation of critical systems from mainframes, monoliths, and on-premise infrastructure to modern cloud-native architectures.

This is a senior leadership role that sits at the intersection of technology and business transformation. You will define modernization roadmaps, manage cross-functional delivery teams, and ensure that migrations are executed safely, on schedule, and with measurable business outcomes. You will leverage Rensora's ModernZ AI platform and AI-powered analysis tools to accelerate discovery, planning, and execution phases.

You will bring deep experience with legacy technologies and a proven track record of leading complex, multi-year transformation programs. You understand the risks, politics, and technical realities of enterprise modernization — and you know how to navigate all of them.

What you'll do

• Lead end-to-end modernization engagements — from initial portfolio assessment through migration execution and post-migration optimization
• Conduct legacy system audits across mainframe (COBOL, PL/I, JCL), midrange (AS/400, RPG), and monolithic application estates
• Design migration strategies: re-platform, re-factor, re-architect, or replace — with clear rationale, risk analysis, and business case for each approach
• Build and present modernization roadmaps and business cases to C-suite and board-level stakeholders
• Manage cross-functional delivery teams including engineers, architects, and client-side technical leads
• Drive adoption of Rensora's ModernZ AI platform for automated code analysis, dependency mapping, and migration planning
• Establish governance frameworks for large-scale migrations — change management, risk mitigation, rollback planning, and quality assurance
• Mentor junior consultants and contribute to Rensora's modernization methodology and knowledge base

What we're looking for

• 7+ years of experience in enterprise modernization, digital transformation, or IT consulting — with at least 3 years in a lead or principal role
• Deep hands-on experience with legacy technologies: mainframe (z/OS, CICS, DB2), midrange (AS/400), or large-scale monolithic applications
• Proven track record of designing and executing multi-million-dollar migration programs from legacy to cloud-native architectures
• Strong understanding of modern cloud platforms (AWS, Azure, GCP) and cloud-native patterns (microservices, containers, serverless)
• Experience with change management methodologies and organizational transformation in large enterprises
• Excellent stakeholder management skills — able to build trust and alignment with technical teams and executive sponsors alike
• Program management capability — budgets, timelines, risk registers, and cross-team coordinationOutstanding written and verbal communication, with the ability to translate complex technical concepts for business audiences

Nice to have

• Experience with AI-assisted modernization tools or automated code transformation
• Certifications in cloud architecture (AWS Solutions Architect, Azure Architect, GCP Professional) or project management (PMP, PRINCE2)
• Background in regulated industries (financial services, healthcare, government) where modernization carries additional compliance requirements
• Experience building and scaling consulting practices or delivery teams
• Familiarity with TOGAF, Zachman, or other enterprise architecture frameworks