Sr Software Engineer

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 Software Engineer you will help redesign and rebuild our next-generation platform on a modern cloud-native technology stack. You will work closely with architects, staff engineers, product, and quality engineering to build secure, scalable, and resilient services. As a senior engineer, you will not only contribute hands-on to the codebase but also provide technical leadership for your team, mentor other engineers, and help define the engineering practices that enable us to deliver high-quality solutions at velocity.

Primary Skills: C# / .NET, TypeScript, 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: Experience using AI-assisted development, testing, and observability tools (e.g., code generation, test generation, static analysis, performance analysis) and a willingness to help the team adopt these tools effectively.

• Design, develop, and maintain complex web services, APIs, and background jobs for the platform using C# and TypeScript.

• Lead the technical design for features and services, collaborating with architects and staff engineers to ensure solutions align with target architecture and non-functional requirements.

• Own the quality, reliability, and operability of the services you and your team build, including unit tests, integration tests, performance considerations, and production support.

• Guide the team in building event-driven and microservice-based architectures using Kafka and other cloud services.

• Influence and improve engineering practices, coding standards, code review quality, and CI/CD pipelines across your team.

• Use AI-assisted tools and automation to improve developer productivity, test coverage, and code quality, and help others on the team do the same.

• Partner with product managers and stakeholders to break down work into small, testable increments and help maintain a healthy, well-groomed backlog.

• Mentor and coach P3 and early-career engineers, providing feedback and support to help them grow.

Minimum Qualifications: -

Typically 6+ years of experience in back-end or full-stack software development, including ownership of complex features or services in production.

Technical skills:

• Typically 6+ years of experience in back-end or full-stack software development, including ownership of complex features or services in production.

• Strong hands-on experience with C#/.NET and JavaScript/TypeScript in production environments.

• Deep understanding of RESTful API design and practical experience with GraphQL-based APIs.

• Strong experience with relational databases (PostgreSQL preferred), including schema design, query optimization, and performance troubleshooting.

• Hands-on experience building or maintaining microservice or event-driven architectures using messaging technologies such as Kafka.

• Proven experience designing and maintaining unit, integration, and component tests as part of CI/CD pipelines.

• Experience operating services in production, including monitoring, logging, alerting, and incident response.

• Comfortable working with Git, trunk-based development or similar branching strategies, and modern CI/CD and DevOps practices.

Nice to have:

• Experience with React or other modern front-end frameworks, and comfort working across the stack when needed.

• Experience with MuleSoft or other integration platforms.

• Experience designing and implementing GraphQL schemas and resolvers for complex domains.

• Hands-on experience with Azure (preferred) or other cloud platforms, plus infrastructure-as-code tools such as Terraform or ARM/Bicep.

• Experience integrating security-by-design practices (authentication, authorization, secrets management, data protection) into application code and pipelines.

• Experience using AI tools to assist with design, development, testing, or production support, and a point of view on when and how to use them responsibly.

Non-technical skills:

• Demonstrated leadership on an Agile team, including helping to define ways of working and facilitating technical discussions.

• Ability to navigate ambiguity, make tradeoffs, and drive work to completion across complex, multi-phase projects.

• Strong communication skills with the ability to explain technical concepts to both technical and non-technical audiences.

• Proactively share information, surface risks, and align stakeholders across engineering, product, QA, and operations.

• Mentors others through code reviews, pairing, and structured feedback, and contributes to a culture of learning and continuous improvement.

Degree in Computer Science, Software Engineering, or related field, or equivalent experience.

Typically requires 6+ years of relevant software engineering experience, with evidence of technical leadership and ownership of production systems.

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, pleaseclick here.

Our Base Pay Range for this position

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 welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process. If you require accommodation please contact us by sending an email to Disability_Accommodation@McKesson.com.

Join us at McKesson!