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University Health Network

This is a Contract position in Toronto, ON posted November 3, 2020.


Job Posting #864477

Position: Developer
Department: UHN Digital
Location: Atrium on Bay, UHN Hospital Locations, MaRS Discovery District

Status: Permanent Full Time
Salary:$65,535 – $81,000.00 (based on experience and knowledge) 


UHN is the largest combined Clinical and Research entity in Canada, made up of hospitals which individually are also among the largest and highest profile institutions in Canada: The Princess Margaret Cancer Centre; Toronto General Hospital; Toronto Western Hospital; and the Toronto Rehabilitation Institute. UHN has a combined IT group under the name ”Digital” servicing these entities and is broken down into 4 key business areas with numerous inter-dependencies: Clinical, Corporate, Education and Research. The current posting is for a position within UHN Digital which overlaps between Digital Research and the Digital Cardiac IT department. For more information on UHN, please visit

Overview of the Position: Software Developer

This position is for a software developer to join a diverse team of passionate specialists who are working on creating a next generation platform (data lake) for storage and mining of patient data. Our data sources span everything from standard electronic medical record type entries and lab results to DNA sequencing data and diagnostic imaging. Our goal is to provide a robust and scalable platform to effectively integrate and facilitate the analysis of ”Big Data” for purposes of research hypotheses testing and quality of care improvement.

Our team works in a casual work environment with a lot of energy and initiative. As a member of our team you will have an opportunity to participate in the decision-making process during design and development of the applications.  We have a heavy preference in using open-source tools.  Our architecture favors the microservice design pattern, with JSON for data-interchange format.  Most of our data-store is no-SQL MongoDB, with some additional relational data in PostgreSQL.  We develop primarily using Golang, however it is also common to encounter and use Python, Java, Ruby, and other programming languages.  Our targeted deployment platform is Kubernetes and Linux Docker-runtime environments.

This position will help develop a variety of applications which have a direct impact on patient care at UHN.


The selected candidate will design and develop software for the data lake, primarily in Golang, although other languages may be required. The produced software will typically (in the immediate term) comprise of back-end microservices that process the data in the data lake. Processing of the data includes: integrating external data sources, implementation of search/retrieve API (GraphQL), anonymization, facilitation of ”Big Data” analysis, etc.

The developer will be responsible for the full life-cycle of software delivery. This includes: requirement gathering, design, implementation along with testing, deployment and maintenance (troubleshooting, bug fixes).  Documentation will also be required through various steps in the process (loosely modeled on Agile).

Required Attributes:

  • Strong coding and problem-solving skills
  • GIT version control, and experience with its workflows
  • Linux based OS and working in a command line environment
  • Computer Science/Engineering Degree, BSc, MSc, Ph.D. or equivalent demonstrable qualifications

Additional Attributes Considered as an Asset:

  • Experience with any: Golang, Python, Java, C#, C, C++. Golang preferred.
  • Experience with continuous integration tools used for testing such as GitlabCI
  • Experience with no-SQL (MongoDB) or RDMS (PostgreSQL, Oracle, etc)
  • Experience working on cloud infrastructure, Docker or Kubernetes
  • Self-motivated and able to learn new technologies quickly
  • Experience working in highly regulated industries
  • Ability to function productively on multiple project teams simultaneously
  • Ability to work independently, with minimal supervision
  • Effective time management
  • Excellent oral and written communications skills

Posted: October 5, 2020 – Until filled

Job # 864477

 For current University Health Network employees: only those who have successfully completed their probationary period, have a good employee record along with satisfactory attendance in accordance with UHN‘s attendance management program, and possess all the required experience and qualifications should apply. 

UHN Digital thanks all applicants, however, only those selected for an interview will be contacted. 

UHN is a respectful, caring, and inclusive workplace. We are committed to championing accessibility, diversity and equal opportunity. Requests for accommodation can be made at any stage of the recruitment process providing the applicant has met the Bona-fide for the open position.  Applicants need to make their requirements known when contacted.  For more information about UHN, do visit