Sr. Software Developer

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.

McKesson is seeking a Sr. Software Developer to design, build, and scale modern software solutions that support healthcare technology innovation. In this role, you will help deliver secure, reliable, and scalable applications across cloud-native platforms while contributing to AI-enabled engineering practices, multi-agent systems, LLM applications, and automation across the software development lifecycle.

You will work across engineering, architecture, product, security, and platform teams to develop API-first services, improve system reliability, and modernize application delivery using Azure, Kubernetes, event-driven patterns, Dev Sec Ops , and AI-augmented development practices.

• Design, develop, and maintain scalable full-stack applications using Java, Python, React, REST APIs, API-first architecture, MongoDB, and PostgreSQL.
• Build and enhance AI-enabled applications using LLMs, RAG patterns, agentic workflows, and multi-agent system design.
• Architect and deliver cloud-native solutions using Microsoft Azure, Kubernetes, containers, microservices, and event-driven systems.
• Lead technical design discussions and help define software architecture, engineering standards, and reusable development patterns.
• Improve CI/CD pipelines, Dev Sec Ops  practices, test automation, monitoring, and platform automation.
• Troubleshoot complex production and non-production issues; analyze root causes and recommend long‑term solutions.
• Partner with cross-functional teams to deliver secure, compliant, reliable, and maintainable software in a regulated enterprise environment.
• Mentor engineers through code reviews, technical guidance, and shared best practices.

• 7+ years of professional software engineering experience, including enterprise-scale application development.
• Experience building applications with Java, Python, React, JavaScript/Type Script, REST APIs, or related full-stack technologies.
• Experience designing, developing, and optimizing database solutions using MongoDB, PostgreSQL, relational data models, document databases, query optimization, indexing, and data integration patterns.
• Hands‑on experience with cloud‑native architecture, preferably Azure, Kubernetes, containers, microservices, or serverless patterns.
• Hands‑on experience with AI‑assisted software development or agentic coding tools and practices, including Claude Code, Git Hub Copilot, code analysis, automated test generation, documentation support, and developer productivity workflows.
• Experience designing or integrating APIs, distributed systems, event‑driven services, or enterprise integrations.
• Experience with CI/CD pipelines, Dev Ops or Dev Sec Ops  practices, Git‑based workflows, automated testing, and release processes.
• Experience applying secure coding, software quality, scalability, reliability, and maintainability practices.
• Experience working in Agile delivery environments with product, architecture, security, and operations partners.
• Bachelor’s degree in Computer Science, Engineering, Information Technology, or related field, or equivalent experience.

• Experience…