Mainframe Db2 Database Administrator

Overview
We're looking for an experienced Mainframe DB2 Application Administrator / DBA to join our team at Leidos. You'll be responsible for managing and optimizing DB2 for z/OS environments, ensuring high performance, reliability, and scalability across mission-critical systems. This role involves close collaboration with application development teams, automation of operational tasks, and implementation of robust backup and recovery strategies. You'll also play a key role in maintaining data integrity, enforcing security protocols, and supporting application deployments.
Leidos Australia delivers IT and airborne solutions that protect and advance the Australian way of life. Our 2000 local experts, backed by our global experience and network of partners, are working to solve the world's toughest challenges in government, intelligence, defence, aviation, border protection and health markets. Learn more about our culture and benefits by visiting us here
Responsibilities
Administer and support DB2 for z/OS environments, focusing on application performance, reliability, and regular database health checks and maintenance.
Create and manage database objects (e.g. tablespaces, tables, indexes, packages) and run DB2 utilities (LOAD, UNLOAD, REORG, RUNSTATS) for physical maintenance.
Collaborate with developers to optimise SQL queries and indexing strategies, perform performance tuning, and ensure data integrity best practices are upheld.
Automate tasks using JCL, REXX, COBOL, and Python; deploy application releases and troubleshoot related issues.
Monitor tablespace capacity, implement RACF-based security protocols, manage backup and disaster recovery procedures, and maintain technical documentation.
Qualifications
Proven experience as a DB2 DBA in enterprise mainframe environments, with a Bachelor's degree in Computer Science or a related field.
IBM Certified Database Associate or equivalent DB2 for z/OS certification; additional certifications or publications are a plus.
Skilled in RACF security management and cross-platform integration (Unix/Windows).
Strong scripting abilities in REXX, JCL, and Python.
Willing to provide on-call and after-hours support as required.
This role does require the successful applicant to be an Australian Citizen, hold a Baseline level security clearance.
Leidos Australia is an equal opportunities organisation and is committed to creating a truly inclusive workplace. We welcome and encourage applications from Aboriginal and Torres Strait Islanders, culturally and linguistically diverse people, people with disabilities, veterans, neurodiverse people, and people of all genders, sexualities, and age groups. Our five Advocacy Groups (Women and Allies Network, Young Professionals, Defence & Emergency Services, Action for Accessibility and Abilities and Pride+) provide an opportunity for team members to connect and collaborate on shared interests, and work to support and celebrate our diverse community.
Next Steps
To apply for this role, follow the links or apply via our Careers page.
Recruitment process - virtual / face to face interview & background checks.
Applicants may also need to meet International Traffic in Arms Regulations (ITAR) requirements. In certain circumstances this can place limitations on persons who hold dual nationality, permanent residency or are former nationals of certain countries as per ITAR 126.1.
We are committed to making our recruitment process accessible to all candidates. Please contact our Careers team if you'd like to discuss any additional support during your application or throughout the recruitment process.
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