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Senior Systems Administrator, Radiation Oncology Applications About the Role McKesson is seeking a Senior Systems Administrator, Radiation Oncology Applications to serve as a critical technology leader supporting Radiation Oncology platforms across the enterprise. This role is responsible for driving the stability, performance, governance, and continuous evolution of clinical application ecosystems that enable high-quality patient care and operational excellence. The successful candidate will provide technical leadership, operational oversight, and strategic guidance for key Radiation Oncology applications while partnering closely with clinical, operational, and technology stakeholders. This individual will play an instrumental role in ensuring technology solutions align with business objectives, regulatory requirements, and organizational priorities. This position requires a strong combination of healthcare application expertise, systems administration experience, stakeholder engagement, and operational leadership within complex healthcare environments.
What You'll Do Platform Strategy & Optimization Drive the administration, support, and continuous improvement of Radiation Oncology applications, including MOSAIQ, ARIA, and Eclipse.
Develop and execute application roadmaps that support organizational goals, clinical requirements, and technology modernization initiatives.
Evaluate opportunities to enhance platform performance, scalability, reliability, and user experience.

Application Delivery & Operations Lead application lifecycle activities including implementation, configuration, upgrades, patching, maintenance, and system optimization.
Ensure application environments are stable, secure, and aligned with enterprise technology standards.
Oversee incident management, root cause analysis, problem resolution, and service restoration activities for mission-critical clinical systems.
Establish and maintain operational procedures, documentation, and support standards.

Stakeholder Partnership Collaborate with clinical leaders, operational teams,



business stakeholders, and technology partners to understand requirements and deliver effective solutions.
Translate complex business and clinical needs into scalable technology capabilities.
Serve as a trusted advisor for application-related initiatives, enhancements, and operational improvements.

Governance, Risk & Compliance Ensure compliance with organizational policies, regulatory requirements, cybersecurity standards, and healthcare industry best practices.
Identify operational risks and develop mitigation strategies that support business continuity and patient care delivery.
Support change management activities and maintain governance processes for application environments.

Vendor & Service Management Partner with vendors and third-party providers to manage support relationships, issue resolution, upgrades, and product enhancements.
Monitor service performance and drive accountability through established operational metrics and service level objectives.

Continuous Improvement & Leadership Analyze platform performance metrics to identify trends, opportunities, and areas for improvement.
Contribute to strategic planning efforts focused on application modernization, automation, and operational efficiency.
Provide technical leadership and mentorship across cross-functional teams supporting Radiation Oncology technologies.

Minimum Requirements Bachelor's degree in Information Technology, Computer Science, Healthcare Informatics, Engineering, or a related field, or equivalent professional experience.
7+ years of experience supporting, administering, implementing, or managing enterprise healthcare applications, clinical systems, or healthcare technology platforms.
Hands-on experience supporting Radiation Oncology applications, including MOSAIQ, ARIA, and/or Eclipse.
Experience configuring, maintaining, upgrading, and supporting healthcare application environments.
Solid knowledge of Microsoft Windows Server, Microsoft SQL Server, and Citrix technologies.
Experience leading application support, implementation, systems administration, or operational improvement initiatives.
Demonstrated success collaborating with clinical, business, vendor, and technology stakeholders.




Critical Skills & Competencies Technical Expertise Radiation Oncology application administration and support
Clinical systems operations and lifecycle management
Microsoft Windows Server environments
Microsoft SQL Server administration and troubleshooting
Citrix infrastructure and virtualization technologies
System monitoring, performance tuning, and optimization

Healthcare Technology Radiation Oncology workflows and clinical operations
Healthcare application integrations and interoperability
Healthcare technology standards and regulatory compliance
Application security, availability, and reliability best practices

Operational Excellence Incident, problem, and change management
IT Service Management (ITSM) processes
Vendor and partner management
Governance, risk management, and operational controls
Continuous improvement and service optimization

Leadership & Communication Cross-functional collaboration and stakeholder management
Strategic thinking and problem-solving
Executive-level communication and presentation skills
Ability to influence decisions and drive outcomes across diverse teams

Work Model / Physical Requirements We are Flex and Connect with 2 days a week in office.
We are proud to offer a competitive compensation package at McKesson as part of our Total Rewards. This is determined by several factors, including performance, experience and skills, equity, regular job market evaluations, and geographical markets. The pay range shown below is aligned with McKesson's pay philosophy, and pay will always be compliant with any applicable regulations. In addition to base pay, other compensation, such as an annual bonus or long-term incentive opportunities may be offered. For more information regarding benefits at McKesson, please click here.
Our Base Pay Range for this position $99,100 - $132,100
McKesson is an Equal Opportunity Employer
McKesson provides equal employment opportunities to applicants and employees, without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, age, genetic information, or any other legally protected category.
For additional information on McKesson’s full Equal Employment Opportunity policies, visit our Equal Employment Opportunity page.
McKesson is committed to being an Equal Employment Opportunity Employer and offers opportunities to all job seekers including job seekers with disabilities. If you need a reasonable accommodation to assist with your job search or application for employment, please contact us by sending an email to (United States) [email protected] or (Canada) [email protected].

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📌 Sr Systems Administrator - Radiation/Imaging (Ontario)
🏢 McKesson’s Corporate
📍 Ontario