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Added 1 day ago
GV
Senior Cybersecurity Engineer (Center of Excellence)
GE Vernova
Markham, ON
- $146,200 to $219,200 CAD / year
- Full-time
We are looking for a senior OT cybersecurity engineer to join the Grid Automation Cybersecurity Center of Excellence (COE). The COE is a new central team within the Grid Automation OT…
Added 2 days ago
QD
Project Manager / Construction Manager – Data Centre Projects
Qu Data Centres
Toronto, ON
- Full-time
…chillers/CRAH units) and issue weekly progress reports with recovery plans for any…
Added 2 days ago
A
Senior Manager Data & AI Technical Strategy Lead
Avanade
Ottawa, ON
- Full-time
We are seeking a senior, credible, and pragmatic Data and AI leader to provide technical and delivery leadership for complex enterprise modernization programs.
Added 2 days ago
TI
Voice & Video Engineer
Tekgence Inc
Calgary, AB
- Contract
Configure call queues, routing strategies, agent assignments, and softphones.
Added 2 days ago
KG
IAM Architect
Kinross Gold Corporation
Toronto, ON
- Full-time
Founded in 1993, Kinross is a Canadian-based senior gold mining company with operations and projects in the United States, Brazil, Mauritania, Chile and Canada. Our focus on delivering…
Added 2 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design and implement the end-to-end data platform for APEX, integrating call center telephony and quality data from the Genesys A3S Snowflake…
Added 2 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design and implement the end-to-end data platform for APEX, integrating call center telephony and quality data from the Genesys A3S Snowflake…
Added 2 days ago
K
Director, Loss Mitigation Operations
KOHO
Remote, Canada
- $180,000 to $210,000 CAD / year
- Full-time
- Remote
…first-line AML and screening operations, money movement and balance recovery, and collections and recoveries. You’ll have real-time oversight of every queue - volumes, service levels,…
Added 2 days ago
M
Senior Software Engineer
Microsoft
Vancouver, BC
- Full-time
As a Senior Software Engineer on the Excel Agent team, you will design and deliver end-to-end features that combine Excel capabilities with agentic AI. You will own technical areas spanning…
Added 3 days ago
TH
Support Worker
The Hadley Community
Montreal, QC
- Part-time
…environment where residents can build stability and work toward recovery. Team members collaborate to connect residents with community resources and practical assistance that enhance…
Added 4 days ago
L
Senior Software Engineer
LyveChat
Toronto, ON
- $150,000 to $190,000 CAD / year
- Full-time
Use approved coding agents such as Claude Code, Cursor, GitHub Copilot agent workflows, or comparable tools for codebase exploration, implementation, debugging, testing, refactoring, and…
Added 5 days ago
AI
Adobe Site Reliability Engineer - Content Delivery Network
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
Senior Site Reliability Engineer - AEM - Content Delivery Network
Added 6 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design the end-to-end data platform for APEX. The platform ingests contact centre telephony and quality data from the Genesys A3S Snowflake…
Added 6 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design the end-to-end data platform for APEX. The platform ingests contact centre telephony and quality data from the Genesys A3S Snowflake…
Added 6 days ago
N
Senior Software Development Engineer in Test (SDET), QA - AI Systems
Nexxa.AI
Remote, Canada
- Full-time
- Remote
We’re looking for a Senior / Staff SDET to own quality for Nexxa’s AI agent systems, combining deep test automation with hands-on manual and exploratory testing. Our agents plan, call…
Added 9 days ago
MG
Director, Legal & Loan Operations
MarshallZehr Group Inc.
Waterloo, ON
- $110,000 to $130,000 CAD / year
- Full-time
Reporting to the Senior Vice President, Risk, Legal & Finance (the “SVP”), the Director, Legal & Loan Operations (the “Director”) will lead MarshallZehr’s legal and loan operations function…
Added 9 days ago
B
Supply Chain Agent (Fabricated Metal Parts)
Bombardier
Dorval, QC
- Full-time
…Parts commodity strategy while providing regular updates to senior leadership on project progress, supplier performance, and negotiation…
Added 9 days ago
PC
Senior Cloud Platform Lead, Senior Manager
PwC Canada
Toronto, ON
- Full-time
We are seeking a highly experienced Senior Cloud Platform Developer to join our team. The ideal candidate will have extensive experience with Kubernetes and managed cloud-based Kubernetes…
Added 9 days ago
P
Senior Cloud Platform Lead, Senior Manager
PwC
Ottawa, ON · Toronto, ON
- Full-time
We are seeking a highly experienced Senior Cloud Platform Developer to join our team. The ideal candidate will have extensive experience with Kubernetes and managed cloud-based Kubernetes…
Added 9 days ago
PC
Director, Construction - Data Centre
Phase Consulting
AB · Alberta, Canada
- Full-time
…infrastructure. The Director, Construction will act as the senior owner-side construction leader on a new hyperscale data centre campus in Northern Alberta, overseeing the project from…
Added 9 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design the end-to-end data platform for APEX. The platform ingests contact centre telephony and quality data from the Genesys A3S Snowflake…
Added 9 days ago
M
Senior Data Architect
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Data Architect to design the end-to-end data platform for APEX. The platform ingests contact centre telephony and quality data from the Genesys A3S Snowflake…
Added 10 days ago
M
Sr. Platform Reliability/L3 Support
McKesson
Mississauga, ON
- Full-time
This role sits on McKesson's Contact Center AI team, which is using AI and digital agent capabilities to transform and improve the end-to-end customer journey across voice, chat, and email…
Added 10 days ago
R&
Staff AI Product Manager
Robots & Pencils
Canada
- Full-time
Define and own agent behavior end-to-end - system prompts, tool schemas, context management (summarization, working memory, information flow across multi-step tasks), human-in-the-loop…
Added 10 days ago
TD
Director, Delivery CX AI
TELUS Digital
Remote, Canada
- $150,000 to $190,000 CAD / year
- Full-time
- Remote
…a Service (CCaaS) platforms, conversational and agentic AI, agent assist, and CX intelligence, and serve as a trusted advisor to client executives. You will manage a portfolio of client…

McKesson

Sr. Platform Reliability/L3 Support

Mississauga, ON, Canada

$99,100 - $132,100 · Full-time

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Job details

Pay: $99,100 - $132,100
Job type: Full-time
Apply by: Nov 12, 2026
Experience: 7+ years of experience in infrastructure engineering, production support, site reliability engineering, platform operations, or related technical roles.
Posting language: English
Posted: Oct 15, 2026

Original job description

McKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare. We are known for delivering insights, products, and services that make quality care more accessible and affordable. Here, we focus on the health, happiness, and well-being of you and those we serve – we care.

What you do at McKesson matters. We foster a culture where you can grow, make an impact, and are empowered to bring new ideas. Together, we thrive as we shape the future of health for patients, our communities, and our people. If you want to be part of tomorrow’s health today, we want to hear from you.

About the Role

McKesson is seeking a Sr. Platform Reliability/L3 Support to support and enhance critical enterprise technology platforms across cloud and hybrid environments, with a primary focus on the platforms behind McKesson's AI-powered digital agents: Sierra Agent OS, Five9, and the integrations and APIs that connect them to our CRM, order, and identity systems. This role combines infrastructure expertise with hands-on production operations, Level 3 troubleshooting, incident response, monitoring, and platform reliability. The successful candidate will lead complex investigations, drive root-cause analysis, improve operational resilience, and collaborate across engineering, platform, and business teams.

This position is ideal for a technically strong professional who thrives in high-availability environments, enjoys solving complex production issues, and leverages AI-enabled tools to improve operational efficiency, reporting, and service delivery.

This role sits on McKesson's Contact Center AI team, which is using AI and digital agent capabilities to transform and improve the end-to-end customer journey across voice, chat, and email for McKesson's businesses. The team designs, builds, and runs digital agents on Sierra Agent OS and connects them to the contact center and enterprise systems around them. When an agent, an integration, or the telephony path behind it has a problem, this role is the senior escalation point above the service desk: find the cause, restore service, and make sure it does not happen again. Sierra is new to the market, so prior Sierra experience is a plus, not a requirement.

What You'll Do

Provide hands-on senior production support and platform operations for enterprise platforms, serving as the escalation point for complex Level 3 incidents.
Lead troubleshooting, root-cause analysis, problem management, and remediation activities to improve platform stability and reliability.
Monitor platform performance, availability, capacity, and service health using observability and monitoring tools.
Support and administer cloud, hybrid, and on-premises infrastructure environments while maintaining security and compliance standards.
Collaborate with engineering teams to automate operational processes and improve deployment, monitoring, and recovery capabilities.
Manage infrastructure governance, access controls, operational standards, and platform documentation.
Support contact center and CCaaS technologies, including incident response, platform administration, and service optimization where applicable.
Act as the L3 escalation point for production issues affecting live digital agents (agent misbehavior, failed API or tool calls, telephony and transfer failures, authentication and access problems), working directly with the agent and integration developers and with Sierra and Five9 vendor support, and lead the post-incident review for each significant incident.
Own alerting and triage for the digital agent platform: tune alerts, keep the triage runbooks the service desk follows current, and maintain the operational dashboards (availability, containment, latency, error rates) that the team and leadership use.
Manage platform access and user lifecycle for the agent tooling (AD groups, SCIM/Okta provisioning, workspace roles) in line with McKesson security and audit requirements.
Use AI-assisted tools to analyze performance and SLA data, automate routine reporting, summarize incidents, develop governance content, and accelerate root-cause investigations.

Basic Requirements

7+ years of experience in infrastructure engineering, production support, site reliability engineering, platform operations, or related technical roles.
Experience providing Level 3 (L3) support and troubleshooting for complex enterprise production environments.
Strong experience with incident management, problem management, and root-cause analysis methodologies.
Experience supporting cloud platforms and enterprise infrastructure technologies.
Experience troubleshooting API-based integrations in production: reading logs and traces, isolating a failure to the right system, and working the issue with internal teams and vendor support.
Knowledge of monitoring, observability, alerting, and performance management tools.
Experience with infrastructure automation and scripting tools such as Terraform, Ansible, Puppet, or similar technologies.
Strong understanding of infrastructure security, access management, and operational governance.
Bachelor's degree or equivalent combination of education and relevant experience.

Preferred Skills / Experience

Experience supporting Contact Center as a Service (CCaaS) platforms such as Five9, or conversational AI and virtual agent platforms such as Sierra, Genesys, or Amazon Connect, in production.
Experience with Kubernetes, container platforms, and cloud-native technologies.
Knowledge of network infrastructure, Software-Defined Networking (SDN), and enterprise storage solutions.
Experience with DevOps, SRE, platform engineering, or reliability engineering practices.
Experience within healthcare, life sciences, or other highly regulated industries.
Experience developing APIs and platform integrations.
Demonstrated ability to mentor team members and influence technical decisions.
Experience leveraging AI tools to improve operational processes, reporting, analytics, and incident management workflows.
Experience with identity and access tooling (Okta, SCIM, Active Directory groups, SailPoint) for platform access governance.

Experience routing alerts into collaboration and ticketing tools (e.g., Microsoft Teams, ServiceNow) and maintaining triage runbooks for a service desk

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 has become aware of online recruiting-related scams in which individuals who are not affiliated with or authorized by McKesson are using McKesson’s (or affiliated entities, like CoverMyMeds or RxCrossroads) name in fraudulent emails, job postings or social media messages. In light of these scams, please bear the following in mind:

McKesson Talent Advisors will never solicit money or credit card information in connection with a McKesson job application.

McKesson Talent Advisors do not communicate with candidates via online chatrooms or using email accounts such as Gmail or Hotmail. Note that McKesson does rely on a virtual assistant (Gia) for certain recruiting-related communications with candidates.

McKesson job postings are posted on our career site: careers.mckesson.com.

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) Disability_Accommodation@McKesson.com or (Canada) Accessibility@mckesson.ca. Resumes or CVs submitted to this email box will not be accepted.

Join us at McKesson!

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More about this job

Responsibilities

This role involves providing senior-level production support and platform operations for enterprise technology, acting as the primary escalation point for complex incidents. You will lead root-cause analysis, manage platform reliability, and collaborate with engineering teams to automate operational processes and improve service delivery.

Requirements

Candidates must have at least 7 years of experience in infrastructure engineering, production support, or site reliability engineering. A bachelor's degree or equivalent experience is required, along with strong skills in incident management, API troubleshooting, and infrastructure automation.

Skills

Infrastructure engineering
Production support
Site reliability engineering
Incident management
Root-cause analysis
Cloud platforms
API integrations
Observability
Terraform
Ansible
Puppet
Contact center technologies
CCaaS
Conversational AI
Identity and access management
Scripting

Benefits

Annual bonus
Long-term incentive opportunities

Visa sponsorship

Not detected in the job text

Keywords

Sierra Agent OS
Five9
CRM
API
Cloud
Hybrid infrastructure
SRE
Incident response
Observability
Terraform
Ansible
Puppet
CCaaS
Conversational AI
Kubernetes
Container platforms
SDN
Okta
SCIM
Active Directory
SailPoint
ServiceNow
Microsoft Teams
Platform reliability
Operational governance
Healthcare
Digital agents
Troubleshooting
Performance management
Access control

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