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Added 2 months ago
Future Opportunities - Product Management
Questrade Financial Group
Toronto, ON
Have familiarity with complex cloud-native architectures, data infrastructure, or API-driven ecosystems.
Added 1 month ago
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DevOps Specialist - (GOAPRDJP00001014)
Amyantek
Edmonton, AB
- Contract
Lead operations of digital services in production by:
Added 4 months ago
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Senior Civil Design Lead
Jacobs
Toronto, Ontario
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
J
Senior Civil Design Lead
Jacobs
Kitchener, Ontario
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
J
Senior Civil Design Lead
Jacobs
Burnaby, British Columbia
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
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Senior Civil Design Lead
Jacobs
London, Ontario
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
J
Senior Civil Design Lead
Jacobs
Edmonton, Alberta
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
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Senior Civil Design Lead
Jacobs
Winnipeg, Manitoba
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
J
Senior Civil Design Lead
Jacobs
Ottawa, Ontario
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
J
Senior Civil Design Lead
Jacobs
Victoria, British Columbia
- $90,000 to $140,000 USD / year
- Full-time
Our team is looking for an experienced and dynamic Senior Civil Design Lead to support our team for Canada in the design and delivery of water, wastewater, conveyance, and transportation…
Added 4 months ago
P
Full Stack Engineer II
Procurify
Remote, Canada
- $116,000 to $129,000 CAD / year
- Full-time
- Remote
…applications, and eager to grow your skills in a fast-paced, modern cloud…
Added 4 months ago
B
Staff Application Security Engineer
Brex
Canada
- $240,000 to $300,000 USD / year
- Full-time
Partner with Product Platform, Cloud Infrastructure, and Data engineering teams to ensure core primitives, APIs, and microservices are secure by default from design to deployment.
Added 1 month ago
Manager - Oracle Project Portfolio Management
EY
Saskatoon, SK · Toronto, ON · Edmonton, AB · Vancouver, BC · Victoria, BC · Winnipeg, MB · Dieppe, NB · Saint John, NB · St. John's, NL · Halifax, NS · London, ON · Ottawa, ON · AB · ON · Calgary, AB · Waterloo, ON
…in leading practices, methods, and resources in the Oracle’s cloud applications and technology space. Oracle Cloud Applications and Technology Services within the COE supports our area…
Added 1 month ago
TC
Machine Learning Engineer - Express Scripts Canada
The Cigna Group
Mississauga, ON
- Full-time
- Other
…candidate will design, build, and operate data pipelines and ML services that detect unusual patterns in healthcare claims and…
Added 2 months ago
EF
Cloud Infrastructure Engineer
Element Fleet Management
Toronto, ON
- Full-time
We’re looking for a hands-on technical lead to join our team as Cloud Infrastructure Engineer. In this role, you will lead the design, implementation, and support of Element Fleet's AWS…
Added 1 month ago
VP of Information Technology
Tenstorrent
Toronto, ON
…leadership role for someone who can own enterprise systems, infrastructure, security partnership, end-user experience, and global IT operations while helping the business scale with…
Added 2 months ago
Software Engineering Expert
AutoTrader.ca
Toronto, ON
Practical experience with distributed systems, APIs, data flows, cloud infrastructure, platform capabilities, and modern software architecture patterns; AWS experience is a must.
Added 2 months ago
LC
Director, Application Security and Vulnerability Management
Loblaw Companies Limited
Brampton, ON
- Full-time
Lead Loblaw's enterprise Application Security and Vulnerability Management strategy, architecture, engineering, and operations across applications, APIs, cloud workloads, endpoints,…
Added 1 month ago
Materials Program Management
Celestica International LP
Newmarket, ON
…is reviewed for application of sound technical judgment. May lead a work group or project team consisting of technical and support staff. Builds internal and external relationships, with…
Added 2 months ago
S
Senior Full-Stack Engineer (Media Team)
Solink
Remote, Canada
- $115,837 to $173,755 CAD / year
- Full-time
- Remote
As a Senior Full-Stack Engineer on the Media Team, you will be responsible for the cloud services that power Solink's media pipeline: ingesting, processing, storing, and serving media data…
Added 1 month ago
Manager - Oracle Cloud Financials
EY
Saskatoon, SK · Toronto, ON · Edmonton, AB · Vancouver, BC · Victoria, BC · Winnipeg, MB · Dieppe, NB · Saint John, NB · St. John's, NL · Halifax, NS · London, ON · Ottawa, ON · AB · ON · Calgary, AB · Waterloo, ON
…in leading practices, methods, and resources in the Oracle’s cloud applications and technology space. Oracle Cloud Applications and Technology Services within the COE supports our area…
Added 1 month ago
V
Senior Software Engineer
Voices
ON · Ontario, Canada
- Full-time
Design and maintain internal APIs and third-party integrations (e.g., Salesforce and cloud services), ensuring reliability, performance, and secure data exchange.
Added 3 months ago
UO
Artificial Intelligence Systems Team Lead, Enterprise Architecture Data Management
University of Saskatchewan
Saskatoon, SK
- Full-time
The artificial intelligence (AI) systems team lead is responsible for leading the design, build, and deployment of institutional AI services that move from proof of concept into production…
Added 4 months ago
S
Senior Backend & Infrastructure Engineer
Scispot
Remote, Canada
- $80,000 to $120,000 USD / year
- Full-time
- Remote
You will own the systems beneath Scispot: backend services, messaging, databases, cloud infrastructure, CI/CD, observability, security, and reliability.
Added 4 months ago
C
Mixed-Signal Design Developer
Cisco
Kanata, Ontario
- Full-time
…silicium et nos modules cohérents permettent aux fournisseurs de services cloud et de services de répondre à la demande croissante de données. Nous avons réuni une équipe d'experts…

The Cigna Group

Machine Learning Engineer - Express Scripts Canada

Mississauga, ON, L5N 8G6, Canada

Hybrid

Pay Range: $115,000 - $125,000 annually · Full-time

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Job details

Pay: Pay Range: $115,000 - $125,000 annually
Job type: Full-time
Workplace: Hybrid
Posting language: English
Posted: Sep 7, 2026

Original job description

Job Description

Job Title: Machine Learning Engineer

Location: Mississauga
Employment Type: Full-time

Reason for Vacancy: Replacement

Work Arrangement: Hybrid
Department Name: Application Delivery Department

Pay Typed: Salaried

Pay Range: $115,000 - $125,000 annually

Please note that this is a general posting range and offer range will be varied based on relevant experience, qualifications, skills required and location for this role.

About Us

Express Scripts Canada (ESC) is the leader in health benefits management. Serving over 12 million members, we help insurance carriers, third party administrators, and the public sector optimize the value of health benefits by linking the talent and professional expertise of our people with leading edge

information management systems and technology. Express Scripts Canada is a wholly owned subsidiary of Express Scripts, one of the largest pharmacy benefit management (PBM) companies in North America, part of The Cigna Group (NYSE: CI), a global health company. Together, we deliver innovative,

cost-effective solutions that improve access, affordability, and health outcomes for Canadians.

Job Summary

Express Scripts Canada is looking for a Machine Learning Engineer to join our Team. The successful candidate will design, build, and operate data pipelines and ML services that detect unusual patterns in healthcare claims and pharmacies.

The role blends hands-on data engineering (Oracle + ETL), model development (unsupervised learning), and API serving (Python/FastAPI), with close collaboration across business teams. You’ll ensure the best possible performance, quality, and responsiveness of the applications and pipelines, and help maintain code quality, organization, and automation.

Key Responsibilities:

Design & implement ML data pipelines to ingest, engineer, and persist features from Oracle (SQLAlchemy/oracledb), including robust logging, argument-driven CLI tools, and environment-based configuration (.env).
Build and validate unsupervised ML models (e.g., MiniBatchKMeans/KMeans, DBSCAN) with dimensionality reduction (TruncatedSVD/PCA), leveraging chunked processing and sparse matrices for large datasets; evaluate using silhouette/Calinski-Harabasz/Davies-Bouldin and stability checks.
Serve models as REST APIs (ie. FastAPI/Pydantic) with health endpoints, CORS, structured response models, and joblib artifact loading; instrument application logs and operational run scripts.
Orchestrate end-to-end validation (DB → feature engineering → API scoring → curated outputs), writing curated results back to Oracle tables and creating/maintaining schemas and DDL where required.
Collaborate with business teams to interpret clusters/risk buckets, explain top contributing features, and incorporate feedback loops into subsequent runs and outputs.
Support deployment workflows in sandboxed/on-prem environments; participate in CI/CD (e.g., Jenkins/OpenShift pipelines) as part of model operationalization.
Ensure performance, quality, and responsiveness of data pipelines and APIs; help maintain code quality, organization, and automation; perform code reviews and follow Agile ceremonies.
Understand how AI is interpreting the data set and use that understanding to build prompt that lead to expected outcomes
Develop and maintain AI pipelines including data preprocessing, feature extractions, model training, and evaluation

What We’re Looking For

5+ years application development experience;3–5 years of professional experience in data science / machine learning engineering with Python, including productionizing data pipelines or ML services
Bachelor’s degree in Computer Science, Data Science, Engineering, Mathematics, or a related field (or equivalent practical experience).
Core programming (Python): Strong with NumPy, pandas, scikit-learn, SciPy (sparse), joblib, CLI (argparse), and data visualization (matplotlib/seaborn).
Modeling (Unsupervised): Practical experience with MiniBatchKMeans/KMeans, DBSCAN, TruncatedSVD/PCA, cluster evaluation (silhouette, CH, DB), and stability/bootstrapping.
Data engineering and Oracle: Writing performant SQL; using SQLAlchemy and oracledb for reads/writes; creating tables/DDL; batch inserts; column/type normalization.
ETL pipelines: Feature engineering over large volumes with chunked processing, environment-aware configs (.env), robust logging, and CSV/DB outputs.
APIs and integration: Batch prediction flows via REST (e.g., httpx client) and schema-compatible exports
Version control and CI/CD: Proficient with Git; familiarity with Jenkins/OpenShift pipelines and on-prem deployment constraints.

Experience in Healthcare domain with exposure to Fraud, Waste, and Abuse detection in pharmacy/claims, risk scoring thresholds, and audit support artifacts considered a strong asset.
Experience with on-prem, masked datasets and familiarity with Docker/OpenShift deployment patterns for ML APIs.

Why Join Us

Competitive compensation, benefits and pension plan
Career development and advancement opportunities
A culture that celebrates innovation and collaboration
Flexible work options and wellness programs

Pre-Employment Requirements

All offers of employment are conditional upon the successful completion of reference checks and background verification in accordance with company policy. Within ESC, for certain positions, obtaining and maintaining a federal government security clearance is a bona fide occupational requirement. Candidates applying for such roles must meet all eligibility criteria for the applicable clearance level and consent to the security screening process as mandated by federal regulations. Failure to obtain or maintain the required clearance will result in withdrawal of the offer or termination of

employment.

Our hiring process includes AI-powered tools to conduct video interviews, take notes and score candidates; however, all scores will be reviewed by hiring managers and our Talent team before making a decision.

Express Scripts Canada is a Cigna company

Express Scripts Canada is a subsidiary of Express Scripts, a Cigna company. Cigna Corporation (NYSE: CI) is a global health service company dedicated to improving the health, wellbeing and peace of mind of those we serve. Cigna offers an integrated suite of health services through Cigna, Express Scripts, and our affiliates including medical, dental, behavioural health, pharmacy, vision, supplemental benefits, and other related products.

About Express Scripts Canada

Express Scripts Canada is a leading health benefits manager and has been recognized as one of the most innovative. Our clients include Canada's leading insurers, third party administrators and governments. We work with these clients to develop industry-leading solutions to deliver superior healthcare in a cost-controlled environment. We provide Active Pharmacy™ services to more than 7 million Canadian patients and adjudicate more than 100 million pharmacy, dental, and extended health claims annually. Through our proprietary consumer intelligence, clinical expertise, and patients-first approach, we promote better health decisions for plan members, while managing and reducing drug benefit costs for plan sponsors.

It will be a condition of employment that the successful candidate obtains an Enhanced Reliability Clearance from the Federal Government. The candidate will be required to provide supporting documentation to receive clearance if required.

We offer a competitive salary and benefits package, along with a positive work environment built on solid corporate values, integrity, mutual respect, collaboration, passion, service and alignment.

We are an equal opportunity employer that promotes a diverse, inclusive and accessible workplace. By embracing diversity, we build a more effective organization that empowers our employees to be the best that they can be.

We are committed to creating a working environment that is barrier-free and we are prepared to provide accommodation for people with disabilities.

If you require accommodation in completing the online application process, please email: eschr2@express-scripts.com Do not email eschr2@express-scripts.com for an update on your application or to provide your resume as you will not receive a response.

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More about this job

Responsibilities

The Machine Learning Engineer will design, build, and operate data pipelines and ML services to detect unusual patterns in healthcare claims. They will also collaborate with business teams to interpret model outputs and ensure the performance and quality of data applications.

Requirements

Candidates must have 5+ years of application development experience and 3-5 years of professional experience in data science or machine learning engineering. A bachelor's degree in a relevant field such as Computer Science, Data Science, or Engineering is required.

Skills

Python
Machine Learning
Data Engineering
Oracle
SQL
FastAPI
Unsupervised Learning
ETL
NumPy
Pandas
Scikit-learn
Docker
OpenShift
Jenkins
Git
Data Pipelines

Benefits

Competitive compensation
Benefits package
Pension plan
Career development opportunities
Wellness programs

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Data Engineering
Python
Oracle
SQLAlchemy
FastAPI
Unsupervised Learning
DBSCAN
KMeans
ETL
Data Pipelines
REST APIs
CI/CD
Jenkins
OpenShift
Docker
Healthcare
Fraud Detection
Risk Scoring
NumPy
Pandas
Scikit-learn
Data Science
Agile
Git
Feature Engineering
API Development
Database Management
Cloud Infrastructure
Security Clearance

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