Senior Legacy (Mainframe) Modernization Lead

MainframeMaster; Chicago (IL); On-site; USD 141,000 - 235,000; Full time

Benefits offered by this job

Health insurance

401(k) retirement plan

Paid time off

Job summary

Capgemini seeks a Senior Legacy Modernization Lead (Mainframe) to drive modernization of on-premise mainframe and iseries assets toward cloud-native architectures. You will shape strategy, blueprint roadmaps, and oversee multi-disciplinary teams across development, testing, and deployment while aligning technical decisions with business goals.

The role emphasizes presales/GTM experience and deep cloud expertise (Azure, AWS, GCP) to deliver scalable, secure solutions at scale in a global

Qualifications

• Over 16 years of experience with IT and cloud projects, including 10+ years leading cloud initiatives.
• Bachelor's degree in Business, Computer Engineering, or related field; advanced degree preferred.
• Proven track record delivering large-scale legacy modernization with mainframe and iSeries platforms.

Responsibilities

• Assess and strategize mainframe modernization landscapes and debt.
• Define modernization roadmaps for mainframe and iseries stacks.
• Architect migration to cloud-native architectures focusing on scalability and security.
• Lead cross-functional teams through migration life cycle (development, testing, deployment).
• Manage risks, monitor progress, and adjust plans as needed.
• Collaborate with stakeholders to align business needs with technical solutions.
• Provide technical leadership and guidance through challenges and quality standards.
• Define strategy for organizational change management and operating model for the modernized estate.

Skills

Mainframe modernization

Cloud platforms

Technical leadership

Presales/GTM

iSeries knowledge

Education

Bachelor's degree

Tools

Azure

AWS

GCP

Codeium

pool.ai

Docker

Kubernetes

Job description

# Senior Legacy (Mainframe) Modernization LeadCapgeminipermanentChicago, US0 viewsPosted October 15, 2026## Job DescriptionChoosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.LocationChicago, IL, Atlanta, GA, Dallas, TX, Nashville, TN, New Jersey/New York regionAbout the job you're consideringCapgemini is seekingSenior Legacy Modernization (**Mainframe**) lead at Director levelwho is a highly experienced technical leader responsible for designing and overseeing the process of updating and improving an organization's existing applications to align with modern technologies, typically involvingcloud migration, infrastructure upgrades, andcode refactoring, while ensuring the solutions meet business needs and are strategically aligned with the company's goals.Ideal candidate should have presales, GTM experience along with strong technical acumen.Your role• Experienced in Assessment and Strategy Development by evaluating **mainframe** application landscape, identifying legacy systems, and analyzing their technical debt.• Defining a comprehensiveapplication modernizationstrategy for **mainframe** and iseries technology stack including target architecture, migration approach, and technology roadmap.• Experienced in defining the design and architecture for migrating / modernizing cloud-native architectures for legacy applications, considering scalability, performance, and security.• Selecting appropriate modernization techniques mastering the R-factors like re-platforming, refactoring, or replacing applications based on business needs.• Creating detailed technical blueprints for migration and modernization projects.• Implementation and Oversight by Leading cross-functional teams through theapplication modernizationprocess, including development, testing, and deployment.• Monitoring progress, identifying risks, and making necessary adjustments to the modernization plan.• Collaborating with stakeholders, partners to ensure alignment between business requirements and technical solutions.• Ability to analyze complex systems and develop a strategic vision forapplication modernization.• ProvideTechnical Leadershipto guide teams through technical challenges and ensuring quality standards are met.• Define and provide strategy for OCM and new operating model for the modernized estate and enable new service definitionYour skills and experiences• 16+ years of experience with minimum of 10+ years of experience leading IT related “Cloud ” projects of various size/scope.• Bachelor's degree in Business, Computer Engineering, or related field (advanced degree preferred).• 5+ years of experience building solutions and products on cloud computing infrastructure (**Azure**, **AWS**, **GCP** and non hyperscaler products like Codeium, pool.ai etc.) to modernize **mainframe** infrastructure and applications• 15+ years inApplication Developmentand Modernization with Hyperscalers like **Azure** , **AWS** , **GCP**• Proven record of accomplishment of solutioning and delivering large scale legacyapplication modernizationand transformation deals with **mainframe** and/or iSeries platforms• Deep understanding of variouscloud platforms (**AWS**, **Azure**, **GCP**)and nice to have experience in non hyperscalar enterprise cloud frameworks and their capabilities forapplication modernization.• Proficiency inmodern programming languages, frameworks, anddesign patternsrelevant to cloud-native development.• Knowledge of containerization technologies (Docker, Kubernetes, MicroFocus, Raincode, mLogica) for improved scalability and deployment.#LI-PS1 #DI-CM1The base compensation range for this role in the posted location is:$141,420 - $235,035Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The base compensation range listed for this position reflects the minimum and maximum target compensation Capgemini, in good faith, believes it may pay for the role at the time of this posting. This range may be subject to change as permitted by law.The actual compensation offered to any candidate may fall outside of the posted range and will be determined based on multiple factors legally permitted in the applicable jurisdiction.These may include, but are not limited to: Geographic location, Education and qualifications, Certifications and licenses, Relevant experience and skills, Seniority and performance, Market and business consideration, Internal pay equity.It is not typical for candidates to be hired at or near the top of the posted compensation range.In addition to base salary, this role may be eligible for additional compensation such as variable incentives, bonuses, or commissions, depending on the position and applicable laws.Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees.In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:Paid time off based on employee grade (A-F), defined by policy: Vacation: 12-25 days, depending on grade, Company paid holidays, Personal Days, Sick LeaveMedical, dental, and vision coverage (or provincial healthcare coordination in Canada)Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)Life and disability insuranceEmployee assistance programsOther benefits as provided by local policy and eligibilityImportant Notice:Compensation (including bonuses, commissions, or other forms of incentive pay) is not considered earned, vested, or payable until it becomes due under the terms of applicable plans or agreements and is subject to Capgemini’s discretion, consistent with applicable laws. The Company reserves the right to amend or withdraw compensation programs at any time, within the limits of applicable legislation.DisclaimersCapgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. Capgemini also participates in the Partnership Accreditation in Indigenous Relations (PAIR) program which supports meaningful engagement with Indigenous communities across Canada by promoting fairness, accessibility, inclusion and respect. We value the rich cultural heritage and contributions of Indigenous Peoples and actively work to create a welcoming and respectful environment. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodation does not pose an undue hardship. Capgemini is committed to providing reasonable accommodation during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.Click the following link for more information on your rights as an Applicant in the United States.http://www.capgemini.com/resources/equal-employment-opportunity-is-the-lawCapgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.