Senior Software Developer

About the Role We are seeking a

Senior Software Developer

to design, build, and support

mission‑critical enterprise software platforms

used across large‑scale healthcare and pharmacy operations. This role is a

senior individual contributor

position with significant autonomy, technical ownership, and responsibility for system reliability, scalability, and performance.

You will work primarily on

backend services, APIs, and integrations , contributing across both

modern services and established enterprise applications . Success in this role requires comfort working in

complex, highly regulated environments , collaborating cross‑functionally, and making sound technical decisions that consider operational risk and downstream impact.

This is a

hybrid role , working

2 days per week in Mississauga or Montreal .

What You’ll Do:

Design, develop, and maintain

backend services, APIs, and enterprise system components

using

C# and .NET technologies

Work across

modern backend services

as well as established

.NET Framework applications , contributing to enhancements, remediation, and modernization

Develop secure, scalable, and maintainable solutions supporting

high‑volume transactional systems

Collaborate with

Product Owners and stakeholders

to clarify requirements and translate business needs into technical solutions

Participate in

system and solution design discussions , recommending architectural and reliability improvements

Write and maintain

automated tests

(unit, integration, service‑level)

Contribute to

CI/CD pipelines , Git‑based workflows, and deployment automation

Support production systems, including

troubleshooting, root‑cause analysis, and stability improvements

Conduct

peer code reviews

and contribute to engineering standards and best practices

Produce clear technical documentation (design notes, APIs, operational runbooks)

Act as a

technical resource and mentor

for less‑experienced developers without formal people management

Basic Requirements:

Bachelor’s degree

in Computer Science, Engineering, or a related field

OR equivalent combination of education and experience

7+ years of professional software development experience

Strong hands‑on experience with

C# and .NET / .NET Framework

Experience building and supporting

enterprise‑scale applications

Proficiency with

SQL Server

and data access technologies (e.g., Entity Framework, Dapper)

Experience working in

large, complex organizations

(Healthcare, Pharma, Manufacturing, Financial Services)

Experience working in

Agile/Scrum environments

Preferred Skills / Experience:

Experience with

ASP.NET Web API / MVC

Exposure to

.NET Core / .NET 6+

Cloud experience (e.g.,

Azure or AWS )

CI/CD tooling and DevOps practices

Experience with

legacy system modernization

Front‑end exposure (React or Angular) to support end‑to‑end collaboration

Experience working in

regulated 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 - $132,100

Scam 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 Disability_Accommodation@McKesson.com or Accessibility@mckesson.ca. Resumes or CVs submitted to this email box will not be accepted.

Join us at McKesson!

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