Job Title

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.As a P4 Senior IT Architect you will help redesign and rebuild our next-generation platform on a modern cloud-native technology stack. You will partner closely with staff engineers, product, and enterprise architecture to translate business strategy into secure, scalable, and maintainable technical solutions. You will provide architectural direction for one or more domains within the ecosystem, ensuring that solutions are aligned with enterprise standards, are testable and observable, and can be delivered incrementally by engineering teams.Our Tech StackPrimary Skills: C# / .NET, TypeScript, React, Postgres, RESTful APIs / GraphQLSecondary Skills: Kafka, Git/version control, Terraform, CI/CD pipelines, Unit testing frameworks (xUnit, Jest)Nice to Have: Azure cloud platform, Redis, Microservices architecture, MFE ArchitectureAI & Tooling: Experience evaluating and incorporating AI-assisted development, testing, and observability tools into architectural designs and standards, including guidance on patterns and risks.What You'll DoDefine and document target architectures, domain boundaries, and integration patterns for the platform, with a focus on modularity, testability, and resilience.Partner with P5 Staff Engineers, P6 Principal/Enterprise Architects, and product leadership to translate business and product strategy into actionable architectural roadmaps.Create and maintain architectural artifacts such as context diagrams, sequence diagrams, data models, and API/interface contracts.Evaluate current-state systems and propose pragmatic migration paths to the target architecture, including strangler patterns, domain carve-outs, and phased delivery approaches.Collaborate with engineering teams to ensure designs are understood, feasible, and implemented as intended, providing hands-on guidance and design reviews as needed.Define non-functional requirements (security, performance, availability, scalability, observability) and ensure they are incorporated into designs, backlogs, and acceptance criteria.Work closely with Quality Engineering and DevOps to ensure architectures support automated testing, CI/CD quality gates, and robust observability and incident response.Assess and recommend technologies, frameworks, and platforms (including AI-assisted tools) that align with enterprise standards and the needs of the platform.Act as a trusted advisor and architectural point-of-contact for one or more product domains, helping to unblock teams and guide decision-making.Minimum Qualifications:-Typically 8+ years of experience in software engineering or architecture roles, with significant experience designing distributed systems and integrations.About YouTechnical & architectural skills:Strong hands-on background with C#/.NET and modern web technologies (e.g., TypeScript, REST/GraphQL APIs).Experience designing and integrating microservices and event-driven architectures using technologies such as Kafka.Solid understanding of relational database design and data modeling (PostgreSQL preferred), including balancing transactional and reporting needs.Familiarity with cloud-native architectures and platforms (Azure preferred), including security, networkin