Join Centorrino Technologies: Innovate, Grow, and Thrive with Us!
At Centorrino Technologies (CT), we’re more than just tech—we’re a community that goes beyond expectations. We’ve been recognised as a Great Place to Work in and one of the Best Places to Work Medium & Large Size in Australia for 2025, with an outstanding eNPS score of 68. And we’re not stopping there. We're on a mission to redefine the customer experience, and we need a passionate Mainframe Senior Systems Programmer to join our team in Darwin.
The Senior Mainframe z/OS Systems Programmer provides senior technical leadership for the management, reliability and continuous improvement of a critical enterprise mainframe environment. The role ensures the stability, performance and availability of the platform through expert system programming, infrastructure oversight and strategic technical guidance, while supporting service management practices and strengthening capability within the broader infrastructure team.
What you’ll be doing:
* Provide senior system programming support for the z/OS operating system and associated mainframe infrastructure, ensuring high availability, performance and service stability.
* Lead the diagnosis and resolution of complex incidents and technical issues, working collaboratively with internal teams, vendors and service providers to restore services and implement long-term solutions.
* Support the planning, design and implementation of system upgrades, infrastructure changes and technical projects affecting the mainframe environment.
* Maintain and improve operational procedures, technical standards and documentation to support consistent and reliable service delivery.
* Provide strategic technical advice to leadership on mainframe technologies, platform capabilities, infrastructure planning and industry developments.
* Apply best practice service management approaches, supporting incident, problem, change and capacity management processes.
* Monitor system performance and capacity, identifying opportunities to improve reliability, efficiency and operational effectiveness.
* Contribute to continual service improvement initiatives to enhance platform stability and operational maturity.
* Provide technical leadership within the infrastructure team, supporting collaboration, knowledge sharing and effective service delivery.
* Participate in on‑call and out‑of‑hours support activities where required to maintain critical system availability.
What you’ll bring:
1. Extensive experience providing system programming support for enterprise mainframe environments, including the z/OS operating system and associated products.
2. Strong technical expertise in mainframe infrastructure, performance management, incident resolution and system optimisation.
3. Demonstrated ability to diagnose and resolve complex technical issues across enterprise platforms and infrastructure environments.
4. Experience supporting infrastructure upgrades, system changes and technology projects within critical operational environments.
5. Strong understanding of service management practices, including incident, problem, change and capacity management.
6. Experience developing and maintaining operational procedures, documentation and technical standards.
7. Proven ability to provide strategic technical advice on infrastructure planning, technology upgrades and platform improvements.
8. Strong communication and stakeholder engagement skills when working with technical teams, vendors and service providers.
9. Demonstrated leadership capability, including mentoring technical staff and supporting knowledge