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Sr. Mainframe Database Administrator (IMS) - Careers at Unum

Unum

Sr. Mainframe Database Administrator (IMS) - Careers at Unum

full-timePosted: Feb 2, 2026

Job Description

Sr. Mainframe Database Administrator (IMS) - Careers at Unum

Location: Columbia, South Carolina, USA | Job ID: 834170

Discover Unum Careers in the heart of insurance jobs with this Sr. Mainframe Database Administrator (IMS) role in Columbia, South Carolina. Unum, a Fortune 500 leader in employee benefits, is spearheading digital transformation to revolutionize technology in the insurance industry. If you're a problem-solver passionate about IMS and DB2 on z/OS, this position offers unparalleled growth opportunities in a collaborative, agile environment.

**Why Join Unum?**
Unum stands out among insurance jobs by prioritizing customer experience and innovation. As a global provider helping millions access affordable benefits, you'll contribute to protecting families' futures while working on a dynamic IMS z/OS benefits platform. Embrace an entrepreneurial spirit in a fast-paced team that challenges the status quo. Unum Careers mean joining forward-thinking innovators disrupting how technology serves the industry—not just insurers. Enjoy the stability of a leading firm excited about its next chapter.

**Career Growth & Stability at Unum**
Growth opportunities abound for senior IT professionals. With 6+ years in IMS database administration and z/OS expertise required, this role positions you for advancement in mainframe technologies like HALDB partitioning, DBRC recovery, and DB2 utilities. Unum invests in your development through hands-on experience with IMS Transaction Manager, JCL debugging, and SQL analysis. Benefit from a supportive culture valuing agile delivery, where team members thrive on collaboration and continuous learning. Unum Careers offer long-term stability in a workload-expanding platform, plus perks like competitive compensation and professional development in insurance jobs.

**Impact of the Role**
As Sr. Mainframe Database Administrator (IMS), you'll ensure seamless database operations critical to Unum's benefits platform. Master IMS Database Manager, execute utility JCL for backups/recoveries, manage DB2 security and DDL, and partner on COBOL/DL/I coding. Your expertise in TSO/ISPF/SDSF will optimize performance, minimize downtime, and drive reliability. This role directly impacts customer satisfaction by maintaining robust mainframe systems, enabling Unum to exceed expectations in technology delivery. Seize these growth opportunities to shape the future of insurance technology at Unum.

Role Overview

Our Fortune 500 company is driving a digital transformation and looking for forward-thinking innovators to disrupt how our industry thinks about and uses technology. As one of the world's leading employee benefits providers, we help millions of people gain affordable access to benefits that help them protect their families, their finances and their futures.

Are you an asker of questions, a solver of problems, and a challenger of the status quo? Our mission is to provide a differentiated customer experience and exceed the expectations people have of technology at any company — not just insurers. 

We are seeking individuals to join our team of talented IT professionals who share never-ending passion and an unwavering focus on our customer experience. Team members comfortable working in an agile, fast-paced, and delivery-focused environment thrive in our environment where we value an entrepreneurial spirit and those who challenge the status-quo.

Unum is changing, and we’re excited about what’s next. Join us.

General Summary:

Unum is seeking a senior level IMS Database Administrator position in a challenging IMS and DB2 hosted environment. A team-oriented spirit is necessary to function in a highly collaborative environment. The platform environment is an IMS z/OS based benefits platform that has an ever-growing dynamic workload.

Qualifications

  • 6+ years of DBA experience in a z/OS / MVS environment

  • 6+ years database administration for IMS in an IBM mainframe environment

  • 4-year college degree or equivalent

- IMS for z/OS

  • Knowledge of IMS Database Manager, DBD source and generation, understanding of Database Recovery Control [DBRC] information and commands, BMP and basic DL/I coding imbedded in COBOL source.

  • Familiarity with IMS Transaction Manager, including basic control region and message region processing, PSB coding and generation, and ACB, MODBLKS, and FORMAT generation.  FORMAT coding is a plus, but not required.  A basic knowledge of Control Region commands for monitoring Sub-systems, Regions, Databases, and Transaction Queues is required. 

  • Strong working knowledge of HALDB partitioning schemes and underlying structures.   Ability to backup and restore and maintain partitions. 

  • Familiarity with IMS Utility JCL, execution, restart, commands for Database allocation changes, and IMS Database backup and recovery techniques.

- DB2 for z/OS

  • DB2 Catalog knowledge [Basic catalog table familiarity, ability to perform querying of dependencies, understanding of DB2 security administration including Grants, Revokes, and a basic knowledge of required authorities for application development including Bind, Plans, Packages, Stored Procedures, and Database level authorities permitting utilities, tablespace and table creation]

  • Familiarity with DB2 Utility JCL, execution, restart, an understanding of utility impact on DB2 object availability, and Database backup and recovery techniques.

  • Understanding of DB2 Data Definition Language [DDL] constructs is required and experience with DB2 Administration tool or similar tool is a plus.

  • Knowledge of SQL and basic DB2 development techniques used in application coding.  Ability to understand COBOL and SQL/PL for analysis and partnering with application area personnel.

- z/OS, TSO, ISPF, JCL, and SDSF

  • Coding and debugging z/OS mainframe batch jobs, the applicant’s work and for application development team members needing assistance is required.  JCL knowledge is a must as is basic ISPF menu and TSO development experience.

  • Familiarity with RACF, rules protecting datasets, and how RACF interacts with both IMS and DB2 instances is a plus.

  • Knowledge of source code editor commands, library maintenance, ISPF menus, listing of cataloged dataset information, TSO job scheduling, and the ability to read JES output from jobs to diagnose issues is required.  Experience with System Display and Search Facility [SDSF] or other z/OS JES output control facility is a plus. 

Responsibilities include:

  • Managing procedures and tools required to support development and testing activities

  • Assisting in all operational environments in the maintenance of production data and data archiving

  • Functioning as a Subject Matter Expert (SME) for solving complex problems and supporting IMS and stored procedure calls. 

  • Possess the ability to connect the dots from infrastructure back to application

  • Works with the Project Manager, and the Release Coordinators to control changes made to supported databases

  • Work as a member of a team in support of day-to-day production, conversions, application and enterprise IT projects, disaster recovery, logical/physical database design and performance tuning.

  • Ability to troubleshoot IMS service calls from a host and distributed environment and provide timely responses to client requests and queries and resolves client issues in a timely fashion.

  • Provide on-call support on a rotational basis outside normal business hours as needed.

  • DB2 Experience is a plus

  • Experience with High Available Lage Database (HALDB) software

  • Candidate resource is on-call on a rotational basis (Typically one week out of five weeks)

  • #LI-TO1

    IN4

    #LI-MULTI

Our company is built on helping individuals and families, and this starts with our employees. We want employees to maintain a positive balance, which is why we provide access to the benefits and resources they need to invest in themselves. From our onsite fitness facilities and generous paid time off to employee professional development programs, we are committed to helping employees live and work their best – both inside and outside the office.

Unum is an equal opportunity employer, considering all qualified applicants and employees for hiring, placement, and advancement, without regard to a person's race, color, religion, national origin, age, genetic information, military status, gender, sexual orientation, gender identity or expression, disability, or protected veteran status.

The base salary range for applicants for this position is listed below. Unless actual salary is indicated above in the job description, actual pay will be based on skill, geographical location and experience.

$89,400.00-$183,500.00

Additionally, Unum offers a portfolio of benefits and rewards that are competitive and comprehensive including healthcare benefits (health, vision, dental), insurance benefits (short & long-term disability), performance-based incentive plans, paid time off, and a 401(k) retirement plan with an employer match up to 5% and an additional 4.5% contribution whether you contribute to the plan or not.  All benefits are subject to the terms and conditions of individual Plans.

Company:

Unum

What You'll Be Doing (Responsibilities)

  • Administer IMS databases including DBD generation and DBRC management
  • Manage IMS Transaction Manager including PSB coding and control region monitoring
  • Handle HALDB partitioning, backup, restore, and maintenance
  • Execute IMS and DB2 utility JCL for database changes and recovery
  • Manage DB2 catalog, security grants/revokes, and DDL constructs
  • Code and debug z/OS batch jobs using JCL, TSO, ISPF
  • Partner with application teams on COBOL, DL/I, and SQL analysis

What You Need to Succeed (Qualifications)

  • 6+ years DBA experience in z/OS / MVS environment
  • 6+ years IMS database administration in IBM mainframe
  • 4-year college degree or equivalent
  • Strong knowledge of IMS for z/OS and DB2 for z/OS

Skills Required

IMS Database Manager, DBD source and generation, IMS DBRC information and commands, HALDB partitioning schemes, backup and restore, IMS Transaction Manager, PSB coding and ACB generation, DB2 for z/OS Catalog knowledge and security administration, DB2 Utility JCL execution and recovery techniques, z/OS JCL coding and debugging, TSO, ISPF, SDSF proficiency, SQL and COBOL analysis, Team collaboration in agile environment

Benefits & Perks at Unum

  • Join a Fortune 500 company driving digital transformation
  • Work with leading employee benefits provider impacting millions
  • Agile, fast-paced environment fostering innovation and entrepreneurial spirit
  • Collaborative team of talented IT professionals
  • Opportunities to challenge status quo and exceed customer expectations
  • Stability in a growing benefits platform with dynamic workload

Locations

  • Columbia, South Carolina, United States
  • Chattanooga, Tennessee, United States
  • Portland, Maine, United States
  • Atlanta, Georgia, United States

Salary

Estimated Salary Rangemedium confidence

120,000 - 171,200 USD / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • IMS Database Manager, DBD source and generationintermediate
  • IMS DBRC information and commandsintermediate
  • HALDB partitioning schemes, backup and restoreintermediate
  • IMS Transaction Manager, PSB coding and ACB generationintermediate
  • DB2 for z/OS Catalog knowledge and security administrationintermediate
  • DB2 Utility JCL execution and recovery techniquesintermediate
  • z/OS JCL coding and debuggingintermediate
  • TSO, ISPF, SDSF proficiencyintermediate
  • SQL and COBOL analysisintermediate
  • Team collaboration in agile environmentintermediate

Required Qualifications

  • 6+ years DBA experience in z/OS / MVS environment (experience)
  • 6+ years IMS database administration in IBM mainframe (experience)
  • 4-year college degree or equivalent (experience)
  • Strong knowledge of IMS for z/OS and DB2 for z/OS (experience)

Responsibilities

  • Administer IMS databases including DBD generation and DBRC management
  • Manage IMS Transaction Manager including PSB coding and control region monitoring
  • Handle HALDB partitioning, backup, restore, and maintenance
  • Execute IMS and DB2 utility JCL for database changes and recovery
  • Manage DB2 catalog, security grants/revokes, and DDL constructs
  • Code and debug z/OS batch jobs using JCL, TSO, ISPF
  • Partner with application teams on COBOL, DL/I, and SQL analysis

Benefits

  • general: Join a Fortune 500 company driving digital transformation
  • general: Work with leading employee benefits provider impacting millions
  • general: Agile, fast-paced environment fostering innovation and entrepreneurial spirit
  • general: Collaborative team of talented IT professionals
  • general: Opportunities to challenge status quo and exceed customer expectations
  • general: Stability in a growing benefits platform with dynamic workload

Target Your Resume for "Sr. Mainframe Database Administrator (IMS) - Careers at Unum" , Unum

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Unum logo

Sr. Mainframe Database Administrator (IMS) - Careers at Unum

Unum

Sr. Mainframe Database Administrator (IMS) - Careers at Unum

full-timePosted: Feb 2, 2026

Job Description

Sr. Mainframe Database Administrator (IMS) - Careers at Unum

Location: Columbia, South Carolina, USA | Job ID: 834170

Discover Unum Careers in the heart of insurance jobs with this Sr. Mainframe Database Administrator (IMS) role in Columbia, South Carolina. Unum, a Fortune 500 leader in employee benefits, is spearheading digital transformation to revolutionize technology in the insurance industry. If you're a problem-solver passionate about IMS and DB2 on z/OS, this position offers unparalleled growth opportunities in a collaborative, agile environment.

**Why Join Unum?**
Unum stands out among insurance jobs by prioritizing customer experience and innovation. As a global provider helping millions access affordable benefits, you'll contribute to protecting families' futures while working on a dynamic IMS z/OS benefits platform. Embrace an entrepreneurial spirit in a fast-paced team that challenges the status quo. Unum Careers mean joining forward-thinking innovators disrupting how technology serves the industry—not just insurers. Enjoy the stability of a leading firm excited about its next chapter.

**Career Growth & Stability at Unum**
Growth opportunities abound for senior IT professionals. With 6+ years in IMS database administration and z/OS expertise required, this role positions you for advancement in mainframe technologies like HALDB partitioning, DBRC recovery, and DB2 utilities. Unum invests in your development through hands-on experience with IMS Transaction Manager, JCL debugging, and SQL analysis. Benefit from a supportive culture valuing agile delivery, where team members thrive on collaboration and continuous learning. Unum Careers offer long-term stability in a workload-expanding platform, plus perks like competitive compensation and professional development in insurance jobs.

**Impact of the Role**
As Sr. Mainframe Database Administrator (IMS), you'll ensure seamless database operations critical to Unum's benefits platform. Master IMS Database Manager, execute utility JCL for backups/recoveries, manage DB2 security and DDL, and partner on COBOL/DL/I coding. Your expertise in TSO/ISPF/SDSF will optimize performance, minimize downtime, and drive reliability. This role directly impacts customer satisfaction by maintaining robust mainframe systems, enabling Unum to exceed expectations in technology delivery. Seize these growth opportunities to shape the future of insurance technology at Unum.

Role Overview

Our Fortune 500 company is driving a digital transformation and looking for forward-thinking innovators to disrupt how our industry thinks about and uses technology. As one of the world's leading employee benefits providers, we help millions of people gain affordable access to benefits that help them protect their families, their finances and their futures.

Are you an asker of questions, a solver of problems, and a challenger of the status quo? Our mission is to provide a differentiated customer experience and exceed the expectations people have of technology at any company — not just insurers. 

We are seeking individuals to join our team of talented IT professionals who share never-ending passion and an unwavering focus on our customer experience. Team members comfortable working in an agile, fast-paced, and delivery-focused environment thrive in our environment where we value an entrepreneurial spirit and those who challenge the status-quo.

Unum is changing, and we’re excited about what’s next. Join us.

General Summary:

Unum is seeking a senior level IMS Database Administrator position in a challenging IMS and DB2 hosted environment. A team-oriented spirit is necessary to function in a highly collaborative environment. The platform environment is an IMS z/OS based benefits platform that has an ever-growing dynamic workload.

Qualifications

  • 6+ years of DBA experience in a z/OS / MVS environment

  • 6+ years database administration for IMS in an IBM mainframe environment

  • 4-year college degree or equivalent

- IMS for z/OS

  • Knowledge of IMS Database Manager, DBD source and generation, understanding of Database Recovery Control [DBRC] information and commands, BMP and basic DL/I coding imbedded in COBOL source.

  • Familiarity with IMS Transaction Manager, including basic control region and message region processing, PSB coding and generation, and ACB, MODBLKS, and FORMAT generation.  FORMAT coding is a plus, but not required.  A basic knowledge of Control Region commands for monitoring Sub-systems, Regions, Databases, and Transaction Queues is required. 

  • Strong working knowledge of HALDB partitioning schemes and underlying structures.   Ability to backup and restore and maintain partitions. 

  • Familiarity with IMS Utility JCL, execution, restart, commands for Database allocation changes, and IMS Database backup and recovery techniques.

- DB2 for z/OS

  • DB2 Catalog knowledge [Basic catalog table familiarity, ability to perform querying of dependencies, understanding of DB2 security administration including Grants, Revokes, and a basic knowledge of required authorities for application development including Bind, Plans, Packages, Stored Procedures, and Database level authorities permitting utilities, tablespace and table creation]

  • Familiarity with DB2 Utility JCL, execution, restart, an understanding of utility impact on DB2 object availability, and Database backup and recovery techniques.

  • Understanding of DB2 Data Definition Language [DDL] constructs is required and experience with DB2 Administration tool or similar tool is a plus.

  • Knowledge of SQL and basic DB2 development techniques used in application coding.  Ability to understand COBOL and SQL/PL for analysis and partnering with application area personnel.

- z/OS, TSO, ISPF, JCL, and SDSF

  • Coding and debugging z/OS mainframe batch jobs, the applicant’s work and for application development team members needing assistance is required.  JCL knowledge is a must as is basic ISPF menu and TSO development experience.

  • Familiarity with RACF, rules protecting datasets, and how RACF interacts with both IMS and DB2 instances is a plus.

  • Knowledge of source code editor commands, library maintenance, ISPF menus, listing of cataloged dataset information, TSO job scheduling, and the ability to read JES output from jobs to diagnose issues is required.  Experience with System Display and Search Facility [SDSF] or other z/OS JES output control facility is a plus. 

Responsibilities include:

  • Managing procedures and tools required to support development and testing activities

  • Assisting in all operational environments in the maintenance of production data and data archiving

  • Functioning as a Subject Matter Expert (SME) for solving complex problems and supporting IMS and stored procedure calls. 

  • Possess the ability to connect the dots from infrastructure back to application

  • Works with the Project Manager, and the Release Coordinators to control changes made to supported databases

  • Work as a member of a team in support of day-to-day production, conversions, application and enterprise IT projects, disaster recovery, logical/physical database design and performance tuning.

  • Ability to troubleshoot IMS service calls from a host and distributed environment and provide timely responses to client requests and queries and resolves client issues in a timely fashion.

  • Provide on-call support on a rotational basis outside normal business hours as needed.

  • DB2 Experience is a plus

  • Experience with High Available Lage Database (HALDB) software

  • Candidate resource is on-call on a rotational basis (Typically one week out of five weeks)

  • #LI-TO1

    IN4

    #LI-MULTI

Our company is built on helping individuals and families, and this starts with our employees. We want employees to maintain a positive balance, which is why we provide access to the benefits and resources they need to invest in themselves. From our onsite fitness facilities and generous paid time off to employee professional development programs, we are committed to helping employees live and work their best – both inside and outside the office.

Unum is an equal opportunity employer, considering all qualified applicants and employees for hiring, placement, and advancement, without regard to a person's race, color, religion, national origin, age, genetic information, military status, gender, sexual orientation, gender identity or expression, disability, or protected veteran status.

The base salary range for applicants for this position is listed below. Unless actual salary is indicated above in the job description, actual pay will be based on skill, geographical location and experience.

$89,400.00-$183,500.00

Additionally, Unum offers a portfolio of benefits and rewards that are competitive and comprehensive including healthcare benefits (health, vision, dental), insurance benefits (short & long-term disability), performance-based incentive plans, paid time off, and a 401(k) retirement plan with an employer match up to 5% and an additional 4.5% contribution whether you contribute to the plan or not.  All benefits are subject to the terms and conditions of individual Plans.

Company:

Unum

What You'll Be Doing (Responsibilities)

  • Administer IMS databases including DBD generation and DBRC management
  • Manage IMS Transaction Manager including PSB coding and control region monitoring
  • Handle HALDB partitioning, backup, restore, and maintenance
  • Execute IMS and DB2 utility JCL for database changes and recovery
  • Manage DB2 catalog, security grants/revokes, and DDL constructs
  • Code and debug z/OS batch jobs using JCL, TSO, ISPF
  • Partner with application teams on COBOL, DL/I, and SQL analysis

What You Need to Succeed (Qualifications)

  • 6+ years DBA experience in z/OS / MVS environment
  • 6+ years IMS database administration in IBM mainframe
  • 4-year college degree or equivalent
  • Strong knowledge of IMS for z/OS and DB2 for z/OS

Skills Required

IMS Database Manager, DBD source and generation, IMS DBRC information and commands, HALDB partitioning schemes, backup and restore, IMS Transaction Manager, PSB coding and ACB generation, DB2 for z/OS Catalog knowledge and security administration, DB2 Utility JCL execution and recovery techniques, z/OS JCL coding and debugging, TSO, ISPF, SDSF proficiency, SQL and COBOL analysis, Team collaboration in agile environment

Benefits & Perks at Unum

  • Join a Fortune 500 company driving digital transformation
  • Work with leading employee benefits provider impacting millions
  • Agile, fast-paced environment fostering innovation and entrepreneurial spirit
  • Collaborative team of talented IT professionals
  • Opportunities to challenge status quo and exceed customer expectations
  • Stability in a growing benefits platform with dynamic workload

Locations

  • Columbia, South Carolina, United States
  • Chattanooga, Tennessee, United States
  • Portland, Maine, United States
  • Atlanta, Georgia, United States

Salary

Estimated Salary Rangemedium confidence

120,000 - 171,200 USD / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • IMS Database Manager, DBD source and generationintermediate
  • IMS DBRC information and commandsintermediate
  • HALDB partitioning schemes, backup and restoreintermediate
  • IMS Transaction Manager, PSB coding and ACB generationintermediate
  • DB2 for z/OS Catalog knowledge and security administrationintermediate
  • DB2 Utility JCL execution and recovery techniquesintermediate
  • z/OS JCL coding and debuggingintermediate
  • TSO, ISPF, SDSF proficiencyintermediate
  • SQL and COBOL analysisintermediate
  • Team collaboration in agile environmentintermediate

Required Qualifications

  • 6+ years DBA experience in z/OS / MVS environment (experience)
  • 6+ years IMS database administration in IBM mainframe (experience)
  • 4-year college degree or equivalent (experience)
  • Strong knowledge of IMS for z/OS and DB2 for z/OS (experience)

Responsibilities

  • Administer IMS databases including DBD generation and DBRC management
  • Manage IMS Transaction Manager including PSB coding and control region monitoring
  • Handle HALDB partitioning, backup, restore, and maintenance
  • Execute IMS and DB2 utility JCL for database changes and recovery
  • Manage DB2 catalog, security grants/revokes, and DDL constructs
  • Code and debug z/OS batch jobs using JCL, TSO, ISPF
  • Partner with application teams on COBOL, DL/I, and SQL analysis

Benefits

  • general: Join a Fortune 500 company driving digital transformation
  • general: Work with leading employee benefits provider impacting millions
  • general: Agile, fast-paced environment fostering innovation and entrepreneurial spirit
  • general: Collaborative team of talented IT professionals
  • general: Opportunities to challenge status quo and exceed customer expectations
  • general: Stability in a growing benefits platform with dynamic workload

Target Your Resume for "Sr. Mainframe Database Administrator (IMS) - Careers at Unum" , Unum

Get personalized recommendations to optimize your resume specifically for Sr. Mainframe Database Administrator (IMS) - Careers at Unum. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Sr. Mainframe Database Administrator (IMS) - Careers at Unum" , Unum

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

UnumInsuranceColumbiaUnited StatesCareersGeneral

Answer 10 quick questions to check your fit for Sr. Mainframe Database Administrator (IMS) - Careers at Unum @ Unum.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

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