Oracle DBA

Machine Learning Technologies, LLC; Chicago (IL); On-site; USD 110,000 - 170,000; Full time

Job summary

Machine Learning Technologies, LLC is seeking a seasoned DB2/IMS Database Administrator for the Chicago area. The role focuses on 24x7 production support, performance tuning, and data integrity across DB2 for z/OS and IMS environments.

You will implement backups, run reorgs, and coordinate with development teams to optimize access paths and schema changes while ensuring security and compliance in a regulated setting.

Qualifications

• Experience in regulated production environments (insurance, banking, healthcare) with audits.
• Proven DB2 for z/OS and IMS production support experience.
• Proficiency with COBOL, CICS, and batch data flows.
• Strong mainframe tooling and scripting capabilities.

Responsibilities

• Provide 24x7 production support for DB2 and IMS environments.
• Monitor performance, availability, and integrity using mainframe tools.
• Respond to incidents and troubleshoot DB2/IMS issues.
• Execute backup/recovery, reorgs, RUNSTATS, and other utilities.
• Collaborate with devs to optimize data access and schema changes.
• Support releases with database readiness and minimal production impact.

Skills

DB2 for z/OS

IMS

Mainframe troubleshooting

JCL

TSO/ISPF

SDSF

SQL performance tuning

Linux/Unix scripting

Capacity planning

Communication skills

Education

IBM Certified Database Administrator – DB2 for z/OS

Tools

SPUFI

QMF

BMC/CA-DB2/IMS tools

IBM utilities

Control-M

CICS

DL/I

DB2 utilities

Job description

• Proven experience as a DB2/IMS Databases Administrator or similar role in production support environments.
• 6+ years of hands‑on experience supporting DB2 for z/OS and IMS (Information Management System) in a production environment.
• Strong knowledge of mainframe tools such as SPUFI, QMF, BMC, CA-DB2/IMS tools, and IBM utilities.
• Deep understanding of DB2 database internals, logs, buffer pools, catalog/directory, and utilities.
• Proficient in IMS Full-Function and Fast Path databases, DL/I calls, PSB/DBD maintenance.
• Solid experience with JCL, TSO/ISPF, SDSF, and mainframe batch job troubleshooting
• Experience with modern mainframe automation tools and schedulers (e.g., Control‑M, CA‑7).
• Knowledge of COBOL, CICS, and batch job data flows.
• Understanding of DB2 Data Sharing and IMS Sysplex environments.
• Experience with backup and recovery solutions
• Solid knowledge of Linux/Unix systems and scripting (Shell, Python, or similar).
• Proficiency in troubleshooting performance tuning, and capacity planning.
• In‑depth understanding of data management (e.g. permissions, recovery, security and monitoring)
• Strong troubleshooting and problem‑solving skills.
• Excellent communication and collaboration abilities.
• Ability to work in a 24/7 support rotation and handle urgent production issues.
• Familiarity with data security is the best practice and backup procedures.

Responsibilities

• Provide 24x7 support for DB2 and IMS database environments, including on‑call rotation.
• Monitor database performance, availability, and integrity using mainframe tools and utilities.
• Respond to incidents, troubleshoot issues, and resolve problems related to DB2/IMS systems.
• Perform database backup and recovery procedures for DB2 and IMS databases.
• Conduct regular reorgs, image copies, and utilities execution (RUNSTATS, REORG, CHECK).
• Support DB2 and IMS subsystem maintenance, upgrades, and patching.
• Analyze and tune SQL queries, buffer pools, and access paths in DB2.
• Optimize IMS database segments, DBDs, PSBs, and access methods.
• Work with developers to design efficient data access strategies.
• Review and implement database schema changes via Change Control processes.
• Participate in software releases, ensuring database readiness and minimal impact on production.

Security & Compliance

• Manage user access, RACF integration, and permissions in DB2/IMS environments.
• Ensure compliance with enterprise security standards and data privacy regulations.
• Maintain accurate and up‑to‑date documentation, including runbooks, architecture diagrams, and operational procedures.
• Collaborate with application teams, infrastructure, and middleware teams to support business applications

Qualification

• Experience working in regulated environments (e.g., insurance, banking, healthcare) with audit and compliance exposure.
• IBM Certified Database Administrator – DB2 for z/OS certification
• Knowledge of COBOL, CICS, and batch job data flows.
• Understanding of DB2 Data Sharing and IMS Sysplex environments.
• Education qualification: Any degree from a reputed college

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.