The Mainframe Legacy Modernization Engineer will play a key role in transforming large, complex mainframe applications into modern, scalable, and cloud‑ready architectures. The engineer will work across assessment, reverse engineering, migration, refactoring, and re‑architecture initiatives, collaborating with architects, business SMEs, and cloud teams to modernize COBOL‑based systems into microservices, APIs, and distributed platforms.
This role requires strong hands‑on mainframe expertise combined with modern application, integration, data transformation and cloud engineering skills.
Key Responsibilities
· Analyze complex mainframe applications (COBOL, CICS, JCL, DB2, VSAM, MQ) to understand business rules, data flows, batch cycles, and system interdependencies.
· Experienced in Mainframe transformation design patterns
· Hands-on transformation knowledge
· Mainframe Data migration experience
· Perform inventory analysis, call‑chain analysis, and functional decomposition of monolithic applications.
· Extract and document technical and business rules using automated discovery or reverse‑engineering tools.
· Design and implement modernization strategies including re‑host, re‑platform, re‑factor, re‑architect, replace, or retire approaches
· Convert or refactor legacy COBOL logic into modern languages such as Java using automated tools or manual re‑engineering techniques.
· Apply incremental modernization patterns such as strangler‑fig and coexistence models to reduce migration risk.
· Modernize JCL‑based batch processes into cloud‑native batch frameworks (e.g., Spring Batch, workflow orchestration).
· Support migration or re‑engineering of scheduling, file transfer, and output management components.
· Ensure functional parity and data integrity between legacy and modernized systems.
Work Model:
We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a position that requires 4 days a week in a client office in Jersey City, New Jersey. Regardless of our working arrangement, we are here to support a healthy work-life balance though our various wellbeing programs.
The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.
What you will need to have to be considered:
· Bachelor’s degree in business administration, Information Technology, Engineering, or a related field (Required)
· 7-10 years of proven experience in managing large-scale or enterprise level initiatives.
· Experience with AI‑based transformation accelerators (AI‑assisted code conversion, rule extraction, pattern detection).
- Familiarity with cloud platforms (AWS, Azure, GCP) and hybrid architectures.
- Experience modernizing batch workloads into cloud‑native orchestration tools (Airflow, Step Functions, Argo, etc.).
- Background in mainframe‑heavy industries such as banking, insurance, or government.
- Certifications such as IBM z/OS Administrator/Developer, cloud certifications, ITIL, PMP, or Scrum Master.
Work Authorization:
Must be legally authorized to work in the United States without employer sponsorship now or in the future.
Compensation (Pay Transparency)
Base salary range (good-faith estimate): $81,450 - $129,500 annually.
Eligible for Cognizant’s discretionary annual incentive program, subject to applicable plan terms.
Benefits
Medical, dental, vision, and life insurance.
401(k) plan with company contributions.
Employee Stock Purchase Plan.
Employee Assistance Program.
15 Paid holidays plus PTO.
Paid parental leave and fertility assistance.
Learning and development programs and certifications.
What we offer
- The chance to work with impact. Here, you’re empowered to bring your biggest thinking to help our company and clients improve everyday life.
- Ownership over your career. Stay at the top of your game through our award-winning learning and development ecosystem. And when your ambitions change or we offer new opportunities, we help you pivot by providing reskilling, on-the-job learning and guidance to find new roles that might be a better fit.
- The opportunity to thrive on a high caliber team with heart. We celebrate each other’s experiences and perspectives and promote a sense of belonging through our affinity groups and diversity and inclusion initiatives.
- A comprehensive total rewards package, including a competitive salary and a pension plan with matching contributions.
- Flexible health and financial benefits to support you and your eligible dependents—from day one.
- True work-life balance. Be at your best through paid time off, flexible work arrangements, volunteering opportunities, social events, and so much more.
About us
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.
Other employment-related information
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
Language requirements vary depending on roles, but we ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.