Mainframe DB2 Database Administrator

Our team feel Leidos is a great place to work. Learn more about our culture and benefits by visiting us here

Do Work That Matters

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.

Your New Role and Responsibilities

We're looking for an experienced Mainframe DB2 Application Administrator / DBA to join our team. 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.

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.

About You

You're a detail-oriented professional with deep expertise in DB2 for z/OS. You thrive in high-performance environments and enjoy solving complex problems. Your strong communication skills and collaborative mindset make you a valuable team player, and your commitment to continuous learning keeps you ahead of the curve.

• 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.

Diverse Team Members, Shared Values and a Common Purpose

Providing our customers with smarter solutions takes an incredible team with diversity of thought, experience and perspectives driving innovation. Inclusion is at the heart of our culture and is one of our core values. It's about creating a workplace where everyone can do important work, feels welcome, valued, and respected, and has equal access to opportunities to thrive. Paul Chase – Chief Executive, Leidos Australia.

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. 

At Leidos, we don't want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."

If you're already scheming step 20 while everyone else is still debating step 2… good. You'll fit right in.

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.