Developer, Product Engineering

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 P5 Staff Software Engineer on the modernization team, you will be a key technical leader driving the architecture, implementation, and evolution of our next-generation platform. You will work across multiple teams to design and deliver secure, scalable, and resilient systems on a modern cloud-native stack. In this role, you will set technical direction, mentor senior and mid-level engineers, and partner with architects, product, and business stakeholders to ensure we build the right solutions in the right way for long-term sustainability.

• Primary Skills
  : C# / .NET, Type Script, React, Postgres, RESTful APIs / GraphQL
• Secondary Skills
  :
  Kafka, Git/version control, Terraform, CI/CD pipelines, Unit testing frameworks (xUnit, Jest)
• Nice to Have
  :
  Azure cloud platform, Redis, Microservices architecture, MFE Architecture
• AI & Tooling
  :
  Deep experience using AI-assisted development, testing, and observability tools, with the ability to define patterns and guardrails for responsible adoption across multiple teams.

• Design and implement critical platform services and influence service-level architecture using C#, Type Script, Graph
  
  QL, Kafka, and Postgre
  
  SQL.
• Partner with P4 Architects and the P6 Principal/Enterprise Architects to shape target architectures, reference implementations, and patterns for the platform.
• Provide technical leadership across multiple teams, ensuring solutions align with architectural standards, non-functional requirements, and long-term maintainability.
• Lead and decompose large, complex initiatives into incremental deliverables, enabling teams to deliver value iteratively while converging on strategic outcomes.
• Establish and champion engineering best practices, including automated testing, CI/CD quality gates, performance and reliability engineering, and secure‑by‑design principles.
• Define and advocate patterns for using AI-assisted tools in development, testing, and operations, and ensure those patterns are understood and adopted across teams.
• Collaborate closely with product management, delivery leadership, and business stakeholders to influence roadmaps, clarify tradeoffs, and ensure technical investments support business goals.
• Mentor and coach P3 and P4 engineers, helping them grow in system design, debugging, operational excellence, and cross‑team collaboration.
• Identify systemic issues (technical debt, reliability risks, process gaps) and drive cross‑team initiatives to address them in a durable, scalable way.

• Typically 10+ years of software engineering experience, including several years in senior or staff-level roles leading complex systems.
• Expert‑level proficiency with C#/.NET and strong experience with JavaScript/Type Script in production environments.
• Deep experience designing and building distributed systems, microservices, and event‑driven architectures using technologies such as Kafka.
• Strong expertise with relational databases (Postgre
  
  SQL preferred), including data modeling, performance tuning, and designing for scale and reliability.
• Proven track record of designing and implementing robust automated testing strategies (unit, integration, contract, end‑to‑end) and integrating them into CI/CD pipelines.
• Significant experience operating production systems, including observability (metrics, logging, tracing), incident response, and post‑incident analysis.
• Experience with cloud platforms (Azure preferred) and infrastructure‑as‑code tools such as Terraform or ARM/Bicep.
• Ability to evaluate and introduce new technologies,…