Software Engineer III - Full Stack (Backend-Focused, Core Platform Services)McKesson • Irving, Texas, United States

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Software Engineer III - Full Stack (Backend-Focused, Core Platform Services)

McKesson

Irving, Texas, United States

Irving, Texas, United States

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Über

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.Role SummaryOntada's Engineering team builds iKnowMed (iKM), the leading Oncology EMR platform used by thousands of clinicians across the US to manage cancer treatment — from regimen ordering and chemotherapy scheduling to genomic result interpretation and clinical trial matching.We are hiring a Software Engineer III (P3) to design and build well-scoped core services, shared frameworks, and platform components that domain teams depend on to deliver clinical applications. This is a backend-first full-stack role — you will spend the majority of your time in Java and Spring Boot building services, APIs, and event-driven integrations, with frontend work focused on building integration layers, enablement UIs, and end-to-end validation using React and TypeScript.You will work within established architectural standards, collaborate closely with senior engineers and architects, and focus on making your services reusable, well-documented, and easy for other teams to adopt. Your success is measured not only by what you build, but by how effectively other teams can build on top of it.This role is ideal for an engineer who:Enjoys building the foundations that other teams build onCares deeply about API design, modularity, and developer experienceWants to work in a high-impact healthcare domain where software directly affects patient outcomesIs ready to own well-scoped services end-to-end (design through build through test through monitor) without needing to own the overall architectureTechnical EnvironmentLayer — TechnologiesBackendJava, Spring Boot, JPA/Hibernate, WildFly (Jakarta EE)APIsRESTful services, OpenAPI/SwaggerMessagingApache Kafka (event-driven clinical workflows)DataOracle (primary RDBMS), Redis (caching), Elasticsearch (search), Databricks (analytics/pipelines)FrontendReact, TypeScript, Webpack Module FederationObservabilityDynatrace (logs, metrics, distributed tracing)InfrastructureLinux, Docker, CI/CD pipelines, GitHealthcare StandardsHL7v2, FHIR, C-CDA, SNOMED CT, LOINC, RxNormQualityJUnit, Mockito, Integration Testing, Code ReviewsDocumentationMarkdown, Mermaid diagrams, API specificationsKey ResponsibilitiesBackend Services and API DevelopmentDesign and implement well-scoped backend services and shared components using Java and Spring Boot, following established architectural patternsBuild and maintain RESTful APIs with clear contracts, consistent error handling, and comprehensive documentation that domain teams can adopt with minimal frictionImplement event-driven integrations using Kafka — produce and consume events that connect clinical workflows across services (e.g., order state changes, lab result notifications, patient data sync)Build data integrations and pipeline components that connect to Databricks for analytics, reporting, and clinical data processingWrite production-quality code against Oracle databases using JPA/Hibernate, with attention to query performance, transaction management, and data integrityCore Platform EnablementContribute to common core services, shared libraries, and frameworks that are consumed by multiple clinical domain teams (ordering, scheduling, clinical documents, genomics)Build services with reusability as a first-class requirement — consistent API patterns, well-defined event schemas, clear extension pointsCollaborate with domain teams to understand their integration needs and usage patterns, and adapt platform services to enable rapid application developmentFollow platform conventions for API versioning, event contracts, data handling, error taxonomy, and security standardsFull-Stack Integration (React and TypeScript)Build frontend integration layers, admin UIs, and enablement interfaces using React and TypeScript to expose platform capabilities to end users and domain teamsImplement frontend changes required to validate end-to-end clinical workflows — ensuring backend services work correctly through the full stackWork within the existing frontend architecture (Webpack Module Federation, legacy-to-modern migration patterns) without owning frontend architecture decisionsQuality and TestingDevelop unit, integration, and API-level tests to ensure correctness and prevent regressionsParticipate in peer code reviews, applying established coding, security, and quality standardsCreate and maintain clear technical documentation (Markdown, Mermaid diagrams, API specs) that enables domain teams to self-serveObservability and Production SupportUse Dynatrace for log analysis, metrics review, and distributed trace investigation to diagnose and resolve production issues with guidance from senior engineersImplement structured logging, telemetry, and error-handling patterns defined by the platform teamIdentify and implement incremental improvements to service reliability, performance, and operational visibility within your owned componentsAgile ExecutionParticipate actively in sprint planning, backlog refinement, sprint reviews, and retrospectivesDeliver committed work predictably, surface risks early, and communicate blockers clearlyAdopt approved tools, frameworks, and CI/CD patterns defined by platform and architecture teamsWe are unable to offer or provide sponsorship for this role presently or in the future.Minimum RequirementDegree or equivalent and typically requires 4+ years of relevant experience.EducationBachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.Critical SkillsBackend (Primary — 70% of the role)5 to 7 years of professional software development experience, with the majority in backend/server-side developmentStrong proficiency in Core Java and Spring Boot (dependency injection, REST controllers, data access, testing)Experience designing and implementing RESTful APIs consumed by multiple client applicationsPractical experience with event-driven architectures — producing and consuming messages via Kafka or equivalentSolid understanding of relational databases — SQL, ORM (JPA/Hibernate), indexing, query optimization, transaction managementExperience working with or integrating into data platforms (Databricks, Spark, or equivalent) for analytics or pipeline supportAbility to investigate production issues using Dynatrace — navigating logs, analyzing response time metrics, and following distributed tracesFull-Stack and Frontend (Secondary — 30% of the role)Working experience with React.js and TypeScriptUnderstanding of how frontend applications consume backend APIs, handle state, and render dataAbility to build or modify frontend components to support end-to-end feature deliveryFoundationalSolid understanding of Linux/Unix environments, shell scripting, and basic networkingExperience with Git, CI/CD pipelines, and automated testing practicesClear written and verbal communication — ability to document services and explain technical decisionsPreferred SkillsExperience in healthcare IT or familiarity with clinical data standards (HL7, FHIR, C-CDA, SNOMED, LOINC, RxNorm)Experience building shared libraries, SDKs, or platform services consumed by other engineering teamsExposure to containerization (Docker) and orchestrationExperience with Elasticsearch for search or indexing use casesFamiliarity with Agile/Scrum methodologies in enterprise environmentsInterested in learning more about this job Scroll down and find out what skills, experience and educational qualifications are needed.This position offers the possibility of a hybrid work arrangement based on recent updates to our in-office/work-from-home model. If located in DFW area, the selected candidate may be expected to work on-site at our Las Colinas office a minimum of two (2) days per week, with the remaining days worked remotely. Specific in-office days may be designated according to team needs and business priorities.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, please click here.Our Base Pay Range for this position$108,700 - $181,100McKesson 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: McKesson is an Equal Opportunity EmployerMcKesson 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 is committed to being an Equal Employment Opportunity Employer and offers opportunities to all job seekers including job seekers with disabilities. If you need a reasonable accommodation to assist with your job search or application for employment, please contact us by sending an email to (United States)
or (Canada) . Resumes or CVs submitted to this email box will not be accepted. xhyhwjd Join us at McKesson!

Irving, Texas, United States

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