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Added 4 mins ago
CS
Senior PeopleSoft FSCM Consultant
Confiar Services
Toronto, ON
- Contract
The candidate must have hands-on experience with global implementations, application integrations, API development, production support, batch processing, and release management. A strong…
Added 4 mins ago
MI
Scheduling Manager
Mercer International Inc.
Okanagan Falls, BC
- $95,000 to $120,000 CAD / year
- Full-time
…Spokane Valley, WA, and Conway, Arkansas with a combined annual production capacity of over 255,000 cubic metres of mass timber. MMT is part of Mercer International, a leading forest…
Added 4 mins ago
S
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- Full-time
Support plant topics for delivery issues, and engineering changes.
Added 4 mins ago
QM
Contrôleur adjoint - Montréal - Atwater - 75 k$ à 95 k$ / Assistant Controller - Montreal - Atwater
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Montreal, QC
- $75,000 to $95,000 CAD / year
- Full-time
- Participer à la clôture mensuelle, aux rapprochements de comptes et à la production de rapports financiers.
Added 4 mins ago
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Opérateur (-trice) de Support | Support Operator
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Manufacturing Supervisor- night shift
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- Full-time
Validates learning achievements and ensures their application.
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- Full-time
Develop and support professional business partnerships with brokers by providing prompt service, presenting quotations, negotiating coverage within delegated authority parameters, and…
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- Full-time
Support products from release to quality assurance through to field trials and production including fixing bugs reported by QA
Added 20 mins ago
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Application Developer
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Toronto, ON
- Contract
This intermediate-level role combines application analysis, software development, and production support. The successful candidate will work closely with business and technology partners to…
Added 21 mins ago
Research Technician II
OICR
ON · MaRS Centre, Toronto, Ontario
Provide guidance and training support for junior staff.
Added 21 mins ago
C
Senior Web Developer - Front End (React, JS)
CIBC
Toronto, ON
- Full-time
…Vue.js. You'll create scalable, resilient user experiences that support complex workflows, validation rules, and real-time feedback. You'll work closely with backend partners to shape…
Added 35 mins ago
BC
Fuel & Lube Operator
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- Full-time
Take on additional duties as needed to support the overall mechanical availability of production equipment.
Added 35 mins ago
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Staff Data Scientist, AI Evaluations Platform- EN
RBC
Montreal, QC
- Full-time
…frameworks that help AI systems move from experimentation to production with evidence and control, while providing technical guidance and mentorship to other data scientists on the…
Added 35 mins ago
ED
Sr Software Developer (Lead) - EN 178
Export Development Canada | Exportation et développement Canada
Ottawa, ON
- $96,557 to $128,743 CAD / year
- Full-time
At EDC, we support Canadian businesses to succeed globally. We provide the financial tools and expertise they need to explore new markets, reduce risks, all towards the goal of making…
Added 35 mins ago
IW
Business Systems Analyst & Developer - Data, AI & Agentic Automation
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Added 35 mins ago
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Drafting/Design Student
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Tundra Oil & Gas is a Manitoba-based oil and gas exploration and production company and a wholly owned subsidiary of Winnipeg-based James Richardson & Sons, Limited. Tundra’s head office is…
Added 35 mins ago
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Analyst, Quality Control - Microbiology
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- Full-time
Completing sample analyses related to products and the production environment; membrane filtration, bacterial endotoxins, pathogen detection, total protein determination, environmental…
Added 36 mins ago
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Lead storage technology maintenance, business application support, and infrastructure improvement projects
Added 36 mins ago
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Added 36 mins ago
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Illustration Assistant
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Added 36 mins ago
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Toronto, ON
Applicants are required to submit both their resume and their most recent unofficial transcript as part of the application process.
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…scientific innovation, and consumer confidence. Your work will help support safe food production, strengthen market access, and protect the health of…
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…Specific in-office days may be set by the team or department to support collaboration and business…
Added 51 mins ago
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…maintenance, technical specialists, and geoscience professionals to support safe, reliable, and efficient operations. You'll have the opportunity to apply your technical knowledge to…
Added 51 mins ago
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Junior Mechanical Engineering Developer, Design (12-Month Term)
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…definition through design verification, qualification, and production. You will work closely with engineering and cross-functional teams to develop practical, manufacturable designs and…

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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