Sr. Software Engineer, Identity & Access Management

McKesson•Columbus, OH

About The Position

As a Senior Software Engineer, Identity & Access Management, you will build and modernize authentication and authorization capabilities that protect McKesson’s healthcare technology platforms. This hands-on software engineering role focuses on modern identity architecture, secure application development, and infrastructure automation. You will help migrate applications and identity capabilities from legacy authentication systems to modern identity platforms such as Okta, and engineer identity infrastructure through Infrastructure as Code (IaC), including Terraform. You will own complex identity capabilities from technical design through implementation, testing, deployment, and production support, while helping establish scalable patterns for other engineering teams. The role partners with application engineers, architects, product owners, security teams, and risk and compliance teams to deliver identity solutions suitable for a regulated healthcare environment. Success includes delivering production-ready capabilities, increasing the use of reusable and version-controlled Terraform patterns, migrating applications away from legacy authentication without compromising availability or access, and improving the reliability, maintainability, and security of integrations through automation, documentation, and operational standards.

Requirements

Degree or equivalent; typically requires 7+ years of relevant experience.
At least 5 years of professional software engineering experience, including ownership of production applications, services, platforms, or distributed systems.
At least 2 years of hands-on identity, authentication, authorization, or security engineering experience.
Strong programming experience in at least one language such as Java, C#, Python, or a comparable object-oriented/backend language.
Production experience integrating applications with a modern identity provider such as Okta, Microsoft Entra ID, Auth0, Ping Identity, or a comparable platform.
Hands-on production experience with OAuth 2.0, OIDC, and SAML.
Experience modernizing or migrating applications from legacy authentication technologies such as LDAP, Active Directory, SiteMinder, or custom authentication services.
Hands-on Terraform experience provisioning and managing infrastructure or platform configuration as code, including reusable modules, source control, review, testing, and deployment practices.
Experience building or supporting REST APIs, microservices, or distributed applications in security-sensitive production environments.
Experience with modern CI/CD and automated software-delivery practices.
Experience implementing secure engineering practices involving authentication, authorization, secrets, sessions, or access controls.

Nice To Haves

Deep hands-on Okta experience, including SSO, MFA, lifecycle management, provisioning, policies, and application integrations.
Experience managing Okta configuration through Terraform.
Experience with SCIM-based provisioning and identity lifecycle automation.
Experience with AWS, Azure, or GCP.
Experience with Docker, Kubernetes, or other cloud-native technologies.
Experience with relational or NoSQL persistence technologies used in distributed applications.
Experience with identity-related threat modeling, Zero Trust, least privilege, or policy-based access controls.
Experience building software in healthcare, financial services, insurance, life sciences, or another regulated environment.
Familiarity with regulatory or security frameworks such as HIPAA, SOC 2, or comparable controls.
Okta certification or equivalent identity-platform certification.

Responsibilities

Design, develop, test, and deploy secure authentication and authorization capabilities, including SSO, MFA, federation, provisioning, and identity lifecycle integrations.
Lead technical migration of applications and user populations from legacy authentication and directory systems to Okta or comparable modern identity platforms.
Build and maintain identity infrastructure using Terraform and IaC, establishing reusable, version-controlled patterns for identity configuration and deployment.
Design and implement identity integrations using OAuth 2.0, OIDC, SAML, and SCIM.
Develop secure services, APIs, and integrations for authentication, authorization, provisioning, and identity workflows.
Partner with application engineers, architects, product owners, and security teams to translate identity and access requirements into scalable technical solutions.
Integrate identity configuration and security controls into CI/CD pipelines, including automated testing and deployment practices.
Review code and technical designs for authentication and authorization correctness, secrets management, session handling, and secure engineering practices.
Diagnose complex production identity issues involving tokens, sessions, federation, provisioning, application integrations, and access policies.
Contribute to the architecture and roadmap for consolidating identity capabilities and retiring legacy authentication technologies.
Mentor engineers on secure software development, identity patterns, IaC practices, and authentication architecture.
Create technical documentation, identity-flow diagrams, deployment patterns, and operational runbooks.
Partner with security, risk, and compliance teams to build identity solutions appropriate for a regulated healthcare environment.