The Role
Lead the design, development, maintenance, testing, optimization, deployment, and production support of enterprise Mainframe applications using COBOL, CICS, JCL, X-Gen, and COSMOS. Analyze requirements, resolve complex production issues, perform root-cause analysis, support batch and online processing, maintain documentation, participate in code reviews, and provide on-call L3 support. Also design and deploy AI-powered solutions using no-code, low-code, and advanced platforms.
Summary Generated by Built In
Requisition Number: 2394968
Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.
Primary Responsibilities:
Required Qualifications:
Preferred Qualification:
At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.
Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.
Primary Responsibilities:
- Design, develop, enhance, and maintain Mainframe applications using COBOL, CICS, JCL, and X-Gen within the COSMOS ecosystem
- Analyze business requirements and translate them into efficient technical solutions on the Mainframe platform
- Develop and support online (CICS) and batch processing applications ensuring high performance and reliability
- Perform impact analysis, code changes, unit testing, and production support for Mainframe applications
- Work extensively with COSMOS Server transactions and related Mainframe components to support enterprise business processes
- Debug and resolve complex production issues using REXX, Abend-AID, File-AID, and Mainframe utilities
- Collaborate with cross-functional teams including business analysts, QA, and downstream systems
- Ensure compliance with coding standards, security guidelines, and audit requirements
- Participate in code reviews, performance tuning, and optimization of existing applications
- Support release activities including migrations, deployments, and post-implementation validation
- Create and maintain technical documentation, design specifications, and operational runbooks
- Provide on-call and L3 production support as required, ensuring minimal downtime and quick resolution
- Builder Responsibilities:
- Design, develop, and deploy AI-powered solutions using no-code, low-code, and advanced platforms, translating business needs into scalable applications that enhance products, workflows, and decision-making
- Comply with all applicable Company policies, procedures, and business directives, changes including those relating to work location, team assignments, work schedules, and flexible work arrangements
Required Qualifications:
- Bachelor's degree or equivalent experience
- 5+ years of hands-on Mainframe development experience
- Solid experience with REXX scripting for automation and problem determination
- Experience working with COSMOS Mainframe applications, CICS, X-gen, or similar large-scale enterprise systems
- Experience in application maintenance, enhancements, and production support
- Solid knowledge of Mainframe datasets, VSAM files, DB2 (or Mainframe databases)
- Good understanding of Mainframe batch and online processing architectures
- Understanding of Mainframe job scheduling and workload management
- Familiarity with Mainframe tools such as Endevor/Changeman, File-AID, Abend-AID, SDSF
- Proven solid expertise in COBOL, CICS, JCL, and X-Gen
- Proven ability to analyze complex issues, perform root cause analysis, and implement long-term fixes
- Proven solid analytical, problem-solving, and decision-making skills
- Proven excellent verbal, written, and interpersonal communication skills
- Proven ability to work collaboratively in a global, distributed team environment
Preferred Qualification:
- Experience working in Agile or hybrid delivery models
At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.
Skills Required
- Bachelor's degree or equivalent experience
- 5+ years of hands-on Mainframe development experience
- Experience with REXX scripting for automation and problem determination
- Experience with COSMOS Mainframe applications, CICS, X-Gen, or similar large-scale enterprise systems
- Experience in application maintenance, enhancements, and production support
- Knowledge of Mainframe datasets, VSAM files, and DB2 or Mainframe databases
- Understanding of Mainframe batch and online processing architectures
- Understanding of Mainframe job scheduling and workload management
- Familiarity with Endevor, Changeman, File-AID, Abend-AID, and SDSF
- Expertise in COBOL, CICS, JCL, and X-Gen
- Ability to analyze complex issues, perform root-cause analysis, and implement long-term fixes
- Strong analytical, problem-solving, and decision-making skills
- Excellent verbal, written, and interpersonal communication skills
- Ability to work collaboratively in a global, distributed team environment
- Experience working in Agile or hybrid delivery models
Optum Compensation & Benefits Highlights
-
Leave & Time Off Breadth — Paid time off is often regarded as generous, with meaningful accrual and flexibility to use it. While practices can vary by team, the overall time-off offering stands out as a relative strength.
-
Retirement Support — A 401(k) plan with employer matching is available and generally well-regarded for supporting long-term savings. It remains valuable, though candidates should verify the current match formula.
-
Parental & Family Support — Programs such as parental leave, family medical leave, and adoption assistance are included as notable elements of the total rewards package. These resources can meaningfully support work-life balance when applicable to the role and location.
Optum Insights
Am I A Good Fit?
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.
Success! Refresh the page to see how your skills align with this role.
The Company
What We Do
Optum, part of the UnitedHealth Group family of businesses, is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together. At Optum, we support your well-being with an understanding team, extensive benefits and rewarding opportunities. By joining us, you’ll have the resources to drive system transformation while we help you take care of your future. We recognize the power of connection to drive change, improve efficiency and make a difference in health care. Join a team where your skills and ideas can make an impact and where collaboration is key to creating technology that produces healthier outcomes.
Gallery
.jpg)
Optum Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
Optum has three workplace models that balance the needs of the business and the responsibilities of each role. These models, core on‑site (5 days/week), hybrid (4 days/week) and telecommute or fully remote, vary by country, role and location.
Typical time on-site:
Not Specified
