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Added 2 months ago
TT
Product Application Engineer - Building Automation
trane technologies
Montreal, Quebec
- Full-time
…Intelligence company for the position of Product Application Engineer - Building Automation. Are you fascinated in leveraging AI to gain insight in the behavior of buildings? You will be…
Added 3 months ago
L
Customer Success Application Engineer
Litmus
Remote, Canada
- Full-time
- Remote
The Application Engineer is a key technical role within the Litmus Customer Success team and is responsible for ensuring successful configuration, deployment, and value realization of…
Added 2 months ago
TI
Product Application Engineer - Building Automation
Trane Italia
Canada
- Full-time
…Intelligence company for the position of Product Application Engineer - Building Automation. Are you fascinated in leveraging AI to gain insight in the behavior of buildings? You will be…
Added 3 months ago
PS
Senior Applied AI Engineer
Public Sector Pension Investment Board
Montreal, QC
- Full-time
This role puts you at the frontier of applied AI inside an institutional investor. It's hands-on and high-agency, blending AI engineering with real product sense and close partnership with…
Added 4 months ago
P
Full Stack Engineer II
Procurify
Remote, Canada
- $116,000 to $129,000 CAD / year
- Full-time
- Remote
We are looking for a Full Stack Engineer II to join our team and help build the core engine and user experiences that power the Procurify platform. You will be a key contributor across both…
Added 4 months ago
B
Staff Application Security Engineer
Brex
Canada
- $240,000 to $300,000 USD / year
- Full-time
As a Staff Application Security Engineer, you will define the technical vision and long-term security architecture for the Brex platform. You will serve as the technical leader for the…
Added 1 month ago
TC
Machine Learning Engineer - Express Scripts Canada
The Cigna Group
Mississauga, ON
- Full-time
- Other
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…
Added 3 months ago
CH
Machine Learning Engineer - Express Scripts Canada
Cigna Healthcare
Mississauga, ON
- Full-time
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…
Added 2 months ago
AN
Expert/Principal Software Engineer
Arista Networks
Vancouver, BC
- Full-time
Independently implement solutions to small-sized problems in our EOS and related software, using the C, C++, and python programming languages.
Added 1 month ago
F
Staff Software Engineer - Code Authoring
Forerunner
Kitchener, ON
- Full-time
Own the developer workflow end to end: how an engineer or an agent gets from a ticket to a merged, tested change. Know where it is slow or fragile, and change the tooling to fix it.
Added 4 months ago
O
Enterprise Security Engineer
Opendoor
Toronto, Ontario
- Full-time
Deep hands-on Okta expertise with direct experience building lifecycle management, SAML/OIDC SSO, SCIM provisioning, and API-driven automation. Not console-only administration.
Added 4 months ago
S
Senior Backend & Infrastructure Engineer
Scispot
Remote, Canada
- $80,000 to $120,000 USD / year
- Full-time
- Remote
This is a hands-on backend and infrastructure role. You will write production code, make architecture choices, and own systems from design through deployment, monitoring, and incident…
Added 4 months ago
P
Senior Frontend Engineer
Procurify
Remote, Canada
- $137,000 to $152,000 CAD / year
- Full-time
- Remote
Frontend Experience: 5+ years of professional experience in hands-on work across frontend systems, preferably in a SaaS environment.
Added 4 months ago
HM
Data Engineer
Hotspex Media
Toronto, Ontario
- $85,000 to $115,000 CAD / year
- Full-time
Partner with Workflow Automation Engineer on ingestion contracts: landing schemas, refresh patterns
Added 4 months ago
S
Full Stack AI Engineer
Scispot
Remote, Canada
- $80,000 to $120,000 USD / year
- Full-time
- Remote
Build polished workflows across React and TypeScript, Java Spring Boot and Python services, APIs, queues, data stores, and AWS infrastructure.
Added 5 months ago
J
Lead Marketing Data & Analytics Engineer
Jetson
North Vancouver, British Columbia
- Full-time
…partners. You stand up the Fivetran connectors (or write the Python when Fivetran can't), land the raw data in bronze, model it through silver and gold, and surface it where it needs to…
Added 4 months ago
PI
Data Platform Engineer
Princeton IT Services, Inc
Toronto, Ontario
- Contract
Design and develop Snowflake-native applications including Snowpark (Python), stored procedures, tasks, streams, and dynamic tables to support day-end processing engines that run natively…
Added 3 months ago
PR
Senior Robotics and Control Engineer
Promise Robotics
Calgary, AB
- Full-time
We’re looking for a Senior Robotics and Control Engineer to join our team and contribute to developing cutting-edge solutions for our core robotic manufacturing technologies. This role is…
Added 2 months ago
A
Software Engineer (C++) - Platform & Emerging Technologies
Autodesk
Toronto, ON · Montreal, QC
- Full-time
Software Engineer (C++)– Platform & Emerging Technologies
Added 3 months ago
O
Senior Data Engineer
OMERS
Toronto, ON · Head Office Toronto
- Full-time
As a key member of the Software Engineering team, the Senior Data Engineer will be hands-on across the full data solution delivery lifecycle, leading the design, development, deployment,…
Added 4 months ago
S
RevOps Engineer
Studeo
Remote, Canada
- $80,000 to $120,000 CAD / year
- Full-time
- Remote
A GTM Engineer's Toolkit - Clay and n8n: You build. You've created Clay tables with real enrichment waterfalls, AI columns, API calls, and write-backs into a CRM - and you can show us one…
Added 4 months ago
E
FPGA Design Engineer
Evertz
Burlington, Ontario
- Full-time
The FPGA Design Engineer at Evertz contributes to the development of advanced broadcast equipment used in real-time video and audio production, processing, and transport for Live sports…
Added 4 months ago
E
Senior Software Engineer - Backend
Evertz
Burlington, Ontario
- Full-time
We are seeking a highly motivated Senior Software Engineer to join our growing engineering team. This role offers an exciting opportunity to design and build scalable, production grade…
Added 4 months ago
SI
R&D Engineering, Staff Engineer
Synopsys Inc
Vancouver, British Columbia
- Full-time
…numerical choice you made last week, and you are the kind of engineer who sees that choice…
Added 3 months ago
Forward Deployed Engineer, Supply Chain
Jetson Home
North Vancouver, BC
A builder who ships. Strong engineering fundamentals, good judgment, and a drive to get things into people's hands. You're fluent in TypeScript, Python, or other high-level language,…

Cigna Healthcare

Machine Learning Engineer - Express Scripts Canada

Mississauga, ON, 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: Jul 29, 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
Data Pipelines
NumPy
Pandas
Scikit-learn
Git
CI/CD
Docker
OpenShift

Benefits

Competitive compensation
Benefits package
Pension plan
Career development opportunities
Wellness programs

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Python
Oracle
SQLAlchemy
FastAPI
ETL
Unsupervised Learning
DBSCAN
KMeans
Data Pipelines
Healthcare
Fraud Detection
REST APIs
Jenkins
OpenShift
Docker
Git
Data Science
Claims Adjudication
Agile
Feature Engineering
NumPy
Pandas
Scikit-learn
SciPy
CLI
Data Visualization
Oracledb
CI/CD
Enhanced Reliability Clearance

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