About the Role We are seeking aSenior Software Developerto design, build, and supportmission‑critical enterprise software platformsused across large‑scale healthcare and pharmacy operations. This role is asenior individual contributorposition with significant autonomy, technical ownership, and responsibility for system reliability, scalability, and performance.You will work primarily onbackend services, APIs, and integrations , contributing across bothmodern services and established enterprise applications . Success in this role requires comfort working incomplex, highly regulated environments , collaborating cross‑functionally, and making sound technical decisions that consider operational risk and downstream impact.This is ahybrid role , working2 days per week in Mississauga or Montreal .What You’ll Do:Design, develop, and maintainbackend services, APIs, and enterprise system componentsusingC# and .NET technologiesWork acrossmodern backend servicesas well as established.NET Framework applications , contributing to enhancements, remediation, and modernizationDevelop secure, scalable, and maintainable solutions supportinghigh‑volume transactional systemsCollaborate withProduct Owners and stakeholdersto clarify requirements and translate business needs into technical solutionsParticipate insystem and solution design discussions , recommending architectural and reliability improvementsWrite and maintainautomated tests(unit, integration, service‑level)Contribute toCI/CD pipelines , Git‑based workflows, and deployment automationSupport production systems, includingtroubleshooting, root‑cause analysis, and stability improvementsConductpeer code reviewsand contribute to engineering standards and best practicesProduce clear technical documentation (design notes, APIs, operational runbooks)Act as atechnical resource and mentorfor less‑experienced developers without formal people managementBasic Requirements:Bachelor’s degreein Computer Science, Engineering, or a related fieldOR equivalent combination of education and experience7+ years of professional software development experienceStrong hands‑on experience withC# and .NET / .NET FrameworkExperience building and supportingenterprise‑scale applicationsProficiency withSQL Serverand data access technologies (e.g., Entity Framework, Dapper)Experience working inlarge, complex organizations(Healthcare, Pharma, Manufacturing, Financial Services)Experience working inAgile/Scrum environmentsPreferred Skills / Experience:Experience withASP.NET Web API / MVCExposure to.NET Core / .NET 6+Cloud experience (e.g.,Azure or AWS )CI/CD tooling and DevOps practicesExperience withlegacy system modernizationFront‑end exposure (React or Angular) to support end‑to‑end collaborationExperience working inregulated environments(healthcare, financial, or other compliance‑driven sectors)Compensation and Benefits We are proud to offer a competitive compensation package 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. In addition to base pay, other compensation, such as an annual bonus or long‑term incentive opportunities may be offered.Our Base Pay Range for this position $99,100 - $132,100Scam Notice 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.Contact Information McKesson job postings are posted on our career site: careers.mckesson.com.Equal Employment Opportunity 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 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 or Resumes or CVs submitted to this email box will not be accepted.Join us at McKesson!#J-18808-Ljbffr