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Added 8 mins ago
CO
Principal Associate, Product Management
Capital One
Toronto, ON
- Full-time
You’ll lead sourcing and synthesis of customer discovery efforts to understand customer needs to drive the long term vision for your product
Added 22 mins ago
JG
Data & Analytics Solutions Architect
J&M Group
Canada
- Full-time
The ideal candidate has 14+ years of experience in data architecture, Databricks, data engineering, and cloud modernization.
Added 22 mins ago
PG
QA/QC Lead - Electrical
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Mississauga, ON
- Full-time
Coordinate inspections with construction, engineering, inspectors, and authorities having jurisdiction.
Added 22 mins ago
KG
Data Architect - Big Data & Analytics
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ON · Ontario, Canada
- Full-time
We are seeking a visionary Enterprise Data Architect with over 14 years of experience to lead the architecture, optimization, and long-term modernization of our global Big Data platforms.…
Added 22 mins ago
PG
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- Full-time
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Added 22 mins ago
VI
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Vector Institute
Toronto, ON
- $64,400 to $80,500 CAD / year
- Full-time
Lead the development and submission of 8-10 high-value grant applications annually, driving the application process from opportunity identification to final proposal submission;
Added 23 mins ago
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Director, Fraud Agentic AI
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- Full-time
Lead by example, championing a test-and-learn approach to Agentic AI product development, promoting experimentation, structured pilots and the use of evidence to drive decisions about…
Added 23 mins ago
C
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- Full-time
…product in an emerging space with little precedent. You’ll lead strategy and end-to-end experience design across a complex product area - from discovery and opportunity framing through…
Added 23 mins ago
B
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- Full-time
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Added 23 mins ago
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Added 23 mins ago
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- Full-time
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Added 23 mins ago
Lead Data Designer
Aviva
Markham, ON
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Added 23 mins ago
Senior Backend Engineer II - Patient Experience
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Vancouver, BC
…across our domestic and global clinics, have allowed us to lead the change against “we caught it too late…
Added 23 mins ago
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- Full-time
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Added 23 mins ago
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Integrity. We lead by example, with humility and courage.
Added 23 mins ago
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Added 23 mins ago
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- Full-time
Support incident response as the DLP technical lead during suspected data exfiltration events
Added 38 mins ago
DC
Asset Management Specialist
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Toronto, ON · Hamilton, ON · Kingston, ON · Oakville, ON · North York, ON
- Full-time
…In this hybrid role, you will bridge the gap between civil engineering design and asset management, turning complex client data into structured, predictive asset databases while supporting…
Added 38 mins ago
DC
Asset Management Specialist
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- Full-time
…In this hybrid role, you will bridge the gap between civil engineering design and asset management, turning complex client data into structured, predictive asset databases while supporting…
Added 53 mins ago
B
Senior Manager, AI Strategy & Product Management
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Toronto, ON
- Full-time
…priorities, translate opportunities into actionable roadmaps, lead AI products from discovery through launch and adoption, and ensure measurable value is realized within a responsible AI…
Added 53 mins ago
A
Senior Product Manager, Data Platform
Autodesk
Toronto, ON
- Full-time
…Product Manager on the team, you will partner with a distributed engineering team to deliver this work, balancing the needs of platform users, including data engineers, scientists,…
Added 53 mins ago
A
Senior Product Manager, Data Platform
Autodesk
Toronto, ON
- Full-time
…Product Manager on the team, you will partner with a distributed engineering team to deliver this work, balancing the needs of platform users, including data engineers, scientists,…
Added 53 mins ago
A
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- Full-time
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Added 53 mins ago
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Citi

Senior Python Engineer

Mississauga, ON, Canada

$120,800.00 - $170,800.00 · Full-time

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Job details

Pay: $120,800.00 - $170,800.00
Job type: Full-time
Apply by: Oct 13, 2026
Experience: 6+ years of hands-on experience in Application Development, primarily with Python.
Posting language: English
Posted: Oct 9, 2026

Original job description

Job Description

We are seeking a highly experienced and technically proficient Senior Python Developer with 6+ years of hands-on experience to design, develop, and deliver critical, scalable, highly available, and performant applications. This role demands deep technical expertise, a strong focus on execution, and a proven ability to deliver robust software solutions, particularly within quantitative and market risk domains.

Key Technical Responsibilities:

Lead hands-on implementation and architecture of Python frameworks for scalable, resilient, and performant applications.
Develop solutions adhering to architectural standards, utilizing in-depth technical and business domain knowledge.
Enforce industry-standard SDLC best practices and contribute to code quality through reviews.
Collaborate with cross-functional teams (Risk, Quants, FO, DevOps, Production Support) for seamless delivery.
Drive development for Stress Testing and Regulatory Risk projects in the Market Risk domain.
Manage project technical aspects, including planning, governance, and taking ownership of initiatives.
Deliver high-quality solutions independently within a globally matrixed environment and under tight deadlines.

Required Technical Qualifications:

I. Core Python & System Development:

6+ years of hands-on experience in Application Development, primarily with Python.
Expert-level Python 3.x proficiency for scalable, resilient, and high-performance applications.
Advanced knowledge of Python frameworks (FastAPI, Django, Flask), best practices, and design patterns (OOP).
Strong understanding of software architecture principles and distributed system design (Microservices, Event-Driven Architecture).
Extensive experience with relational (PostgreSQL, Oracle, SQL Server) and NoSQL databases (MongoDB, Cassandra, Redis), including advanced SQL.
Proven expertise in designing, developing, and securing RESTful APIs and integration patterns.
Hands-on experience with CI/CD systems (Jenkins, GitLab CI, GitHub Actions, Bitbucket Pipelines) for automated deployment.
Highly experienced with Unix-based operating systems.

II. Cloud & DevOps:

Strong background in cloud platforms (AWS, Azure, GCP), including containerization (Docker) and contributing to Kubernetes orchestration.
Advanced troubleshooting, debugging, and performance optimization for distributed systems.
Proficiency in automated testing frameworks (Pytest, unittest) and TDD methodologies.
Solid understanding of secure coding practices and application security principles (OWASP Top 10).
Expertise in Git (Bitbucket, GitHub) for advanced branching and pull request workflows.

III. Quantitative & Risk Domain:

Experience developing Quantitative/Calc-intensive Python solutions with advanced computation libraries.
Sound understanding and exposure to various Risk Methodologies.
Exposure to mathematical modeling/finance insights.

IV. Artificial Intelligence (AI) Integration (Exposure):

Exposure to AI/ML tools and frameworks (TensorFlow, PyTorch, scikit-learn).
Practical experience with AI tools (Copilot, Devin, Claude/Gemini/GPT) for development workflows.
Experience with Agentic AI tools, including writing Agents and Skills, and contributing to Agentic frameworks.
Understanding and practical application of Generative AI concepts in software development.

Professional Skills:

Deep understanding and practical experience with Agile/Scrum methodologies.
Exceptional ability to manage priorities and tasks effectively.
Strong analytical, logical, systems thinking, and critical analysis skills.
Excellent written and verbal communication for diverse audiences.
Ability to work independently, take ownership, and collaborate effectively in global teams.

Desirable Qualifications:

Polyglot Programming Exposure (e.g., Java).
Big Data Technologies (Apache Spark, Hadoop, Kafka) and data warehousing.
Frontend Development (React, Angular, Vue.js).
Relevant Cloud or Industry Certifications.
Experience with banking domain (pricing, risk), CFA/FRM certification.

Key Focus Areas / Desirable Skills

• Foundational Models: Gemini, OpenAI, Claude, Llama, Local Models

• Machine Learning: PyTorch, TensorFlow, Fine-tuning

• Frameworks: LangChain, LlamaIndex, Hugging Face

• Retrieval Augmented Generation: PostgreSQL, Vector DBs, Advanced Retrieval

• Orchestration: LangGraph, Multi-Agent Systems

• Development: Python, FastAPI, Async Programming

• Deployment: Docker, Production APIs, Monitoring

• Applied Methodology: Prompt Engineering, Workflow Design, GenAI Optimization

Education:

Bachelor’s degree/University degree or equivalent experience in Computer Science, Engineering, or Technology
Master’s degree preferred

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

Lead the architecture and implementation of scalable, high-performance Python frameworks for quantitative and market risk applications. Collaborate with cross-functional teams including Quants, Risk, and DevOps to deliver robust software solutions within a global environment.

Requirements

Requires 6+ years of hands-on Python development experience with expertise in system architecture, distributed systems, and cloud platforms. Candidates should possess strong analytical skills and experience in quantitative or risk-intensive domains.

Skills

Python
FastAPI
Django
Flask
PostgreSQL
SQL
AWS
Azure
GCP
Docker
Kubernetes
CI/CD
Pytest
Git
Generative AI
Machine Learning

Visa sponsorship

Not detected in the job text

Keywords

Python
FastAPI
Django
Flask
PostgreSQL
NoSQL
AWS
Azure
GCP
Docker
Kubernetes
CI/CD
Jenkins
Git
Pytest
TDD
Microservices
Event-Driven Architecture
Generative AI
Machine Learning
PyTorch
TensorFlow
Agile
Scrum
Market Risk
Quantitative Analysis
RESTful APIs
System Architecture
Cloud Computing

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