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 y

ou.




Role

Summary
Ontada'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 buil

d on top of it.


This role is ideal fo

r an engineer who:
Enjoys building the foundations that o

ther teams build on
Cares deeply about API design, modularity, and

developer experience
Wants to work in a high-impact healthcare domain where software directly aff

ects patient outcomes
Is ready to own well-scoped services end-to-end (design through build through test through monitor) without needing to own th

e overall architectur

e


Technical Enviro

nment
Layer - Technologies
Backend: Java, Spring Boot, JPA/Hibe

rnate, WildFly (Jakarta EE)
APIs: RESTf

ul services, OpenAPI/Swagger
Messaging: Apache Kafka (eve

nt-driven clinical workflows)
Data: Oracle (primary RDBMS), Redis (caching), Elasticsearch (search), Da

tabricks (analytics/pipelines)
Frontend: React, TypeSc

ript, Webpack Module Federation
Observability: Dynatrace (log

s, metrics, distributed tracing)
Infrastructure: Li

nux, Docker, CI/CD pipelines, Git
Healthcare Standards: HL7v2, FHI

R, C-CDA, SNOMED CT, LOINC, RxNorm
Quality: JUnit, Mockito

, Integration Testing, Code Reviews
Documentation: Markdown,

Mermaid diagrams, AP

I specifications


Key Responsibilit

ies
Backend Services and API Development
Design and implement well-scoped backend services and shared components using Java and Spring Boot, fol

lowing established architectural patterns
Build and maintain RESTful APIs with clear contracts, consistent error handling, and comprehensive documentation that do

main teams can adopt with minimal friction
Implement event-driven integrations using Kafka - produce and consume events that connect clinical workflows across services (e.g., order state changes, l

ab result notifications, patient data sync)
Build data integrations and pipeline components that connect to Databricks for analyt

ics, reporting, and clinical data processing
Write production-quality code against Oracle databases using JPA/Hibernate, with attention to query performanc