Mainframe Modernization Architect

Posted Yesterday
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3 Locations
Hybrid
Expert/Leader
Cloud • Information Technology
Support mission critical workloads, modernize IT infrastructure and reduce total cost of ownership.
The Role
Leads mainframe modernization and migration initiatives for large global clients. Develops transformation and re-platforming solutions, conducts discovery workshops, presents technical and business cases, advises executives, and partners with sales, consulting, operations, and product teams. Requires extensive mainframe expertise across legacy technologies, migration architecture, data modernization, cloud and hybrid environments, and enterprise hosting. The role also supports AI-driven modernization, technical documentation, project lifecycle management, and client relationship development.
Summary Generated by Built In

At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things!  We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.

We can Do Great Things because we have great Associates. The Ensono Core Values unify our diverse talents and are woven into how we do business. These five traits are the key to achieving our purpose:

Honesty, Reliability, Curiosity, Collaboration, and Passion.

 About the role and what you'll be doing:

  • Collaborate with their counterparts in the Sales and Consulting organizations to create Pursuit, Solution, and Sales strategies for large existing global clients
  • Conduct discovery and assessment workshops (often in collaboration with resources from consulting, operations and product teams) to help drive further penetration of the client account
  • Develop and document solutions that meet client’s (technical and business) requirements and allow them to adapt to changing industry needs with a focus on transformation and re-platform efforts
  • Conduct solution development sessions and present technical solutions and business cases to a wide variety of audience
  • Gain executives buy in for complex solutions by engaging in executive and senior-level technology discussions
  • Gain clients’ confidence as a trusted advisor by offering consultation and recommendations drawing from technology know-how and past experiences
  • Align and partner with Product Management to help drive appropriate product enhancements and changes to technology roadmap
  • Aid in driving stability and innovation within the client’s current and future state and create solutions based on client requirements and available product offerings

We want all new Associates to succeed in their roles at Ensono. That's why we've outlined the job requirements below. To be considered for this role, it's important that you meet all Required Qualifications. If you do not meet all of the Preferred Qualifications, we still encourage you to apply. 

Required Qualifications
  • Bachelor’s degree in engineering or computer sciences
  • 20+ years of experience as an architect or equivalent in the hosting and network space (preferably with a service provider)
  • Over 12 years' experience as a Modernization or Migration Architect, leading legacy system upgrades to new platforms with minimal business disruption.
  • Hands-on experience with Mainframe Application migration and legacy modernization projects.
  • 15+ years of experience with strong expertise across the mainframe technology stack, including COBOL, Natural, Adabas, Easytrieve, Db2, IMS, JCL, CICS, VSAM, RACF, z/OS, PL/I, and Assembler.
Preferred Qualifications
  • Proven experience in managing projects through the entire project lifecycle. This includes managing multi-phase/multi-dimensional/multi-resource projects to conclusion while maintaining high client satisfaction
  • Demonstrated expertise in data migration, with a strong emphasis on understanding and working with legacy data structures to effectively convert and modernize them into modern database platforms.
  • Skilled in evaluating mainframe legacy applications and developing comprehensive modernization plans.
  • Demonstrated development experience with modern Java and C# frameworks, including designing and implementing scalable enterprise applications.
  • Additionally, has extensive experience working with Python, applying the language for scripting, automation, data analysis, and developing scalable backend systems that facilitate enterprise modernization efforts.
  • Understanding of (and experience with) public cloud platforms (AWS, Azure) and hybrid solutions preferred
  • Demonstrated ability to understand and leverage Artificial Intelligence, applying AI-driven strategies and tools to modernize legacy systems and enhance data migration efforts.
  • Skilled in identifying use cases for AI within legacy modernization practices, driving innovation by integrating intelligent automation, advanced analytics, and machine learning solutions to streamline processes and create future-ready technologically
  • Well versed in the hosting technology landscape including compute, storage, backup, network, security, DR, DevOps and IT governance
  • Good understanding of the sales process for large and complex opportunities.
  • Resourceful and confident in Crisis and Expectation management and confident under pressure
  • Has experience in technical documentation to capture solution components in a timely manner while ensuring acceptable level of detail, data integrity, and accountability
  • Ability to share knowledge and expertise among various organizations within the company and to facilitate teamwork among those organizations to better serve our clients
  • Ability to work in a team environment and demonstrate strong problem-solving skills
  • Proficient with common office applications such as MS Outlook, MS Excel, PowerPoint and MS Visio
  • Excellent organizational, interpersonal, and communication skills (oral, written and presentation)

Shift Timings: 1:30 PM to 10:30 PM IST

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, colour, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request.


Skills Required

  • Bachelor's degree in engineering or computer science
  • 20+ years of experience as an architect or equivalent in hosting and network environments, preferably with a service provider
  • 12+ years of experience as a modernization or migration architect leading legacy system upgrades
  • Hands-on experience with mainframe application migration and legacy modernization projects
  • 15+ years of expertise across the mainframe technology stack, including COBOL, Natural, Adabas, Easytrieve, Db2, IMS, JCL, CICS, VSAM, RACF, z/OS, PL/I, and Assembler
  • Experience managing multi-phase, multi-dimensional, multi-resource projects through the full project lifecycle
  • Expertise in data migration and converting legacy data structures to modern database platforms
  • Experience evaluating legacy applications and developing modernization plans
  • Development experience with modern Java and C# frameworks
  • Extensive experience with Python for scripting, automation, data analysis, and backend systems
  • Understanding and experience with AWS, Azure, and hybrid cloud solutions
  • Experience applying artificial intelligence, intelligent automation, advanced analytics, or machine learning to legacy modernization
  • Knowledge of hosting technologies including compute, storage, backup, networking, security, disaster recovery, DevOps, and IT governance
  • Understanding of the sales process for large and complex opportunities
  • Crisis and expectation management experience
  • Technical documentation experience
  • Ability to collaborate across organizations and facilitate teamwork
  • Strong problem-solving, organizational, interpersonal, oral, written, and presentation skills
  • Proficiency with Microsoft Outlook, Microsoft Excel, PowerPoint, and Visio

Ensono Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Ensono and has not been reviewed or approved by Ensono.

  • Leave & Time Off Breadth — Time off provisions include unlimited PTO, paid volunteer time, and a formal sabbatical program. These offerings provide flexibility for rest, community service, and extended renewal.
  • Retirement Support — Retirement support includes a 401(k) with company match as part of the core package. This adds long‑term financial value alongside day‑one eligibility for other coverage.
  • Parental & Family Support — Family‑forming coverage and paid parental leave are explicitly included, with adoption and surrogacy reimbursement. These benefits support diverse paths to growing a family.

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The Company
HQ: Downers Grove, IL
3,000 Employees
Year Founded: 2015

What We Do

Ensono helps IT leaders be the catalyst for change by harnessing the power of hybrid IT to transform their businesses. Our broad services portfolio from mainframe to cloud, powered by an intelligent governance platform, is designed to help our clients operate for today and optimize for tomorrow. We are award-winning certified experts in AWS & Azure

Why Work With Us

Our culture is collaborative & results-driven. Curiosity, passion, honesty & reliability are values we live by. Career & professional development is encouraged through promotions, learning opportunities, Ensono University - eTalks, training academies, paid tuition and study leave, quarterly Innovator Awards. Thinking Thursdays (no meetings 8 to 12)

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