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Added 16 days ago
Co-op Winter 2027 DevOps Engineering - 8-16 Months
General Dynamics Missions System International
Ottawa, ON
Internship
Participate in troubleshooting, root cause analysis, and problem resolution, under guidance from senior engineers.
Added 19 days ago
Senior Salesforce Automation Test Engineer
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Toronto, ON
$90,000 to $125,000 CAD / year
Full-time
Develop and maintain automated test scripts using tools/frameworks such as Selenium, Java, Playwright or equivalent.
Added 19 days ago
Senior Technical Architect, Application Development & Support
Canadian Standards Association
Toronto, ON
Full-time
Acts as lead developer and technical design authority for applications in scope, setting coding standards, design patterns, branching strategy, and definition of done for internal and…
Added 19 days ago
Technical Lead
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Woodbridge, ON
Full-time
The role is responsible for doing development for technical modernization initiatives across C++, Java/Spring Boot services, API development, Oracle database integration, DevOps enablement,…
Added 17 days ago
Co-op January 2027 - Systems Integration, Verification, and Validation - 8-12 months
General Dynamics Missions System International
Calgary, AB
Internship
Execute verification and validation tasks according to established procedures and under guidance from senior engineers.
Added 17 days ago
Co-op Winter 2027 - Software Engineering - 4-8 months
General Dynamics Missions System International
Ottawa, ON
Internship
…implementation, testing, and documentation under the guidance of senior engineers. This position provides exposure to the full software development lifecycle and modern development…
Added 17 days ago
Co-op Winter 2027 - Systems Integration, Verification, and Validation - 8-12 months
General Dynamics Missions System International
Ottawa, ON
Internship
Execute verification and validation tasks according to established procedures and under guidance from senior engineers.
Added 15 days ago
Senior Data Software Engineer
Scotiabank
Toronto, ON
As a Senior Software Engineer on Scotiabank’s Data & AI Technology team, you will lead the design, development and scaling of our enterprise data catalog and data management solutions…
Added 20 days ago
Senior Software Developer
Joblinxsapp
Toronto, ON
Full-time
Justice Technology Services is seeking three highly experienced Senior Software Developers to support the Criminal Justice Digital Design (CJDD) modernization program.
Added 19 days ago
Senior Java Software Engineer
Wissen Technology
Montreal, QC
Full-time
Experience with Java frameworks like Spring, Hibernate, Spring boot.
Added 19 days ago
Senior Java Developer
J&M Group
Toronto, ON
Full-time
Strong expertise in Java and Python for back-end development.
Added 1 month ago
Senior Backend Java Developer
J&M Group
Toronto, ON
Contract
8+ years of experience in Java backend development.
Added 17 days ago
Software Engineer II
Planview Incorporated
Vancouver, BC
…team in Vancouver, BC. In this role, working closely with our senior team members, you will design, implement, and test features for a generative AI platform for our products. These…
Added 18 days ago
Software Engineer, Senior
Qualcomm
Toronto, ON
Full-time
2+ years of academic or work experience with Programming Language such as C, C++, Java, Python, etc.
Added 18 days ago
Applications Development Sr Programmer Analyst - Assistant Vice President
Citi
Mississauga, ON
Full-time
We are seeking an experienced and motivated Senior Java Developer to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess…
Added 18 days ago
Staff Engineer – Software Development, Architecture, Security & Governance
Royal Bank of Canada
Toronto, ON
Full-time
10+ years of software engineering experience, including at least 2 years in a Staff or equivalent senior technical leadership role.
Added 18 days ago
Staff Engineer – Software Development, Architecture, Security & Governance
RBC
Toronto, ON
Full-time
10+ years of software engineering experience, including at least 2 years in a Staff or equivalent senior technical leadership role.
Added 18 days ago
Senior Software Development Engineer, WARP
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Burnaby, BC
Full-time
…experience for our wallet and wallet adjacent products. As a Senior Software Engineer, you'll play a key role in designing, developing, and deploying essential fraud control systems across…
Added 18 days ago
Senior Software Engineer
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
Full-time
We are looking for a hands-on Senior Software Engineer to design, build, and operate scalable cloud-native backend services and distributed applications. You will work primarily with Java,…
Added 17 days ago
Senior Analyst, Decision Platforms
Momentum Financial Services Group
Toronto, ON
Proficiency in SQL for analysis, validation, and troubleshooting, with working knowledge of Python and/or Java.
Added 12 days ago
Senior Programmer Analyst
Medavie
Moncton, NB · NB · NL · NS · ON · PE · MBC NB Head Office Moncton
Full-time
The Senior Programmer Analyst is responsible for the operational management, support, and continuous improvement of enterprise quality assurance and testing platforms. This role serves as a…
Added 18 days ago
Senior Data Engineer – Python
Citi
Mississauga, ON
Full-time
We are seeking a skilled and experienced Senior Data Engineer with strong Python expertise to join our Engineering team. The ideal candidate is passionate about building robust, scalable…
Added 18 days ago
Data Engineer - Sports & Prediction Markets
Betstamp
Toronto, ON
Full-time
You'll begin with scrapers and gradually take ownership across the stack. Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.
Added 18 days ago
Market Data Engineer - Prediction Markets & Odds Infrastructure
Betstamp
Toronto, ON
Full-time
Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.
Added 18 days ago
Backend Engineer - Real-Time Sports Data (Go / ClickHouse / AI-Native)
Betstamp
Toronto, ON
Full-time
You'll begin with scrapers and gradually take ownership across the stack. Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.

Citi

Senior Data Engineer – Python

Mississauga, ON, Canada

Pay: $120,800.00 - $170,800.00
Job type: Full-time
Apply by: Sep 27, 2026
Experience: 6+ years of total experience in software or data engineering.
Posting language: English
Posted: Sep 3, 2026

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Original job description

We are seeking a skilled and experienced Senior Data Engineer with strong Python expertise to join our Engineering team. The ideal candidate is passionate about building robust, scalable data pipelines and platforms that power analytics, business intelligence, and data-driven decision-making across the enterprise. This role requires deep hands-on experience in Python-based data engineering, SQL development, data modeling, and ETL/ELT design, along with familiarity with both relational and NoSQL databases. Experience with Big Data technologies such as PySpark, and exposure to platforms like Databricks or Starburst, will be considered a strong advantage. The successful candidate will thrive in a collaborative, fast-paced environment and take ownership of end-to-end data solutions.

Responsibilities

Design, develop, and maintain scalable Python-based data pipelines for ingestion, transformation, and distribution of data across enterprise platforms.
Build reusable Python libraries, frameworks, and automation utilities to support data engineering workflows.
Develop and optimize complex SQL queries, stored procedures, and database objects across multiple relational database platforms.
Design and implement ETL/ELT solutions including staging frameworks, incremental processing, data reconciliation, and error handling.
Develop and maintain logical and physical data models to support both operational and analytical use cases.
Work with NoSQL databases (e.g., MongoDB) to design data structures and access patterns suited to non-relational workloads.
Build and maintain data pipelines using PySpark for large-scale distributed data processing where applicable.
Implement data quality, validation, and completeness controls to ensure accuracy and reliability across data products.
Collaborate with data scientists, analysts, software engineers, and business stakeholders to understand requirements and deliver high-quality data solutions.
Contribute to CI/CD pipelines for automated testing, deployment, and version control of data workflows.
Participate in code reviews, troubleshooting, debugging, and production support of data systems.
Support data governance, security standards, and compliance requirements across all data assets.

Qualifications

Strong proficiency in Python for data engineering, including data transformation, orchestration, workflow automation, and utility development.
Expert-level SQL skills across relational databases (PostgreSQL, Oracle, SQL Server, or MySQL).
Solid experience in data modeling - relational and dimensional modeling (Star/Snowflake schemas).
Hands-on experience designing and building ETL/ELT pipelines using Python-based frameworks .
Working experience with NoSQL databases, particularly MongoDB.
Experience with PySpark and distributed data processing frameworks for large-scale data workloads is a plus.
Familiarity with Databricks and/or Starburst is a plus.
Hands-on experience with AI Development Tools such as Claude Code, Devin AI, Cursor, Copilot etc.
Knowledge of data formats including Parquet, Avro, and JSON, and storage platforms such as HDFS or cloud object stores.
Proficiency with version control (Git) and CI/CD practices for data engineering workflows.
Familiarity with data orchestration tools such as Apache Airflow or equivalent schedulers.
Basic working knowledge of Java is a plus.
Strong analytical, problem-solving, and communication skills with the ability to work across technical and non-technical teams.

Experience

6+ years of total experience in software or data engineering.
Hands-on experience specifically in Python-based data engineering, SQL development, ETL design, and data modeling.
Proven experience building and maintaining production-grade data pipelines and platforms at enterprise scale.
Demonstrated experience working with both relational (PostgreSQL, Oracle, SQL Server) and NoSQL (MongoDB) databases in real-world projects.
Experience working in regulated or highly process-oriented environments, preferably within Financial Services.

Education

Bachelor’s or Master’s degree in Computer Science, Software Engineering, or an equivalent technical field.

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$120,800.00 - $170,800.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

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More about this job

Responsibilities

Design, develop, and maintain scalable Python-based data pipelines for ingestion, transformation, and distribution across enterprise platforms. Collaborate with cross-functional teams to implement data quality controls and deliver high-quality, production-grade data solutions.

Requirements

Requires 6+ years of experience in software or data engineering with strong proficiency in Python, SQL, and ETL/ELT design. Candidates must have experience with relational and NoSQL databases, data modeling, and distributed processing frameworks like PySpark.

Skills

Python
SQL
Data Engineering
ETL/ELT
PySpark
Data Modeling
NoSQL
MongoDB
Databricks
Starburst
Git
CI/CD
Apache Airflow
Data Pipelines
Cloud Object Stores
Distributed Data Processing

Visa sponsorship

Not detected in the job text

Keywords

Python
SQL
Data Engineering
ETL
ELT
PySpark
Data Modeling
NoSQL
MongoDB
Databricks
Starburst
Git
CI/CD
Apache Airflow
Parquet
Avro
JSON
HDFS
PostgreSQL
Oracle
SQL Server
MySQL
Data Governance
Automation
Financial Services
Distributed Systems
Data Pipelines
Software Engineering
Cloud Storage
Workflow Orchestration

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